CA2197442C

CA2197442C - Composition for reducing malodor impression on inanimate surfaces

Info

Publication number: CA2197442C
Application number: CA002197442A
Authority: CA
Inventors: Susan Schmaedecke Zwerdling; Jerome Paul Cappel; Philip Anthony Geis; Mark Lee Mccarty; Toan Trinh
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 1994-08-12
Filing date: 1995-07-20
Publication date: 2001-06-12
Anticipated expiration: 2015-07-20
Also published as: JPH10505257A; EP0774979A1; ES2282993T3; EP0774979B1; WO1996004938A1; CA2197442A1; DE69535439T2; DE69535439D1; US5578563A; ATE357937T1; JP3090951B2

Abstract

The present invention relates to an aqueous composition for reducing malodor impression. The composition comprises from about 0.1 % to about 20 % by weight of the composition, of solubilized, water-soluble alkali metal salt selected from the group consisting of carbonate salts, bicarbonate salts, and mixtures thereof, from about 0.01 % to about 1 % by weight of the composition, of perfume. Optionally, but preferably, the composition comprises from about 0 %
to about 5 % by weight of the composition, of solubilized, water-soluble cyclodextrin, and from about 0 % to about 3 % by weight of the composition, of solubilizing aid. The composition is essentially free of any material that would soil or stain fabric and contains less than about 5 % by weight of the composition, of low molecular weight monohydric alcohol, and has a pH of from about 7.5 to about 10.5.

Description

W096/04938 219 7 4 4 2 PCT~S95/09178 COMPOSITION FOR REDUCING MALODOR
IMPRESSION ON INANIMATE SURFACES
_ 5 T ~ CHNICAL FIELD
The present invention relates to aqueous, preferably clear, composition for reducing malodor impression, comprising water-soluble alkali metal bicarbonate and/or carbonate salt, perfume and optionally, but preferably, solubilized, water-soluble cyclodextrin. The composition is designed to reduce malodor, i.e., freshen surfaces, especially, clothes e.g., those that are contaminated with environmental odors such as food odors, tobacco odors, and/or that are wetted with perspiration.
Preferably the composition is used to restore and/or maintain freshness by reducing malodor without the need for washing or dry cleaning.
BACKGROUND OF THE INVENTION
The present invention relates to an aqueous, preferably clear, composition, article of manufacture, and method for use as a freshening composition.
Preferably, the composition is sprayed onto fabrics, particularly clothes, to restore their freshness by reducing-malodor impression, without washing or dry cleaning. Fabrics treated with the composition of the present invention also release extra fragrance upon rewetting, such as when the wearer perspires. The freshening composition of the present invention is designed' to extend the wear of fabrics between washing or dry cleaning. Fabrics treated with the freshening composition of the present invention will stay fresher longer, and receive extra freshening effect via perfume release when it is most needed, that is upon fabric rewetting.
A wide variety of deodorizing compositions are known in the art, the most common of which only contain a perfume to mask the malodor. Odor masking is the intentional concealment of one odor by the addition of another. The preference to the masking perfume is varied greatly, depending on the application, e.g., underarm odor masking, fabric odor masking, bathroom odor masking, etc. Appropriate perfume ingredients need to be selected to connote freshness.
Odor modification, in which the odor is changed, e.g., by chemical modification, has also been used. Current malodor modification methods known in the art which do not simply mask odors are oxidative degradation, which uses oxidizing --agents such as oxygen bleaches, chlorine, chlorinated materials such as sodium hypochlorite, chlorine dioxide, etc., and potassium permanganate to reduce malodor, and reductive degradation which uses reducing agents such as sodium bisulfate to reduce malodor Both of these methods are unacceptable for use on fabncs because they can damase colored fabrics. specifically. they can bleach and discolor ~~ored fabncs Other methods of odor control contain actives that are targeted to react ~.wth malodors having specific chemical functional eroups Examples of such actv es are biguarude polymers, which complex with organic compounds contawun~ orearucallv bound '~ andior S atoms and fatty alcohol esters of methyl methacn~lic acid w hich react with tttiols, amines. and aldehydes. .~ more detailed description of these methods can be found in C,'.S Pat '~os. ..544,093, 3,07.1.891, and (.' K Pat .app \o 10 941.10.
Fatty alcohol esters of methyl methacrylic acid are not preferred in the composition of this invention because they are not water soluble.
Other types of deodorizing compositions known in the art contain antibacterial and antifung;al agents which regulate the malodor-producing microorganisms found on 1 ~ the surface to which the deodorizing composition is directed. Many skin deodorant products use this technology. These compositions are not effective on malodors that do not come: from bacterial sources, such ais tobacco or food odors.
Fabric malodor is most commonly caused by environmental odors such as tobacco odor, coaking and/or food odors, or body odor. The unpleasant odors are .0 mainly organic molecules which have different structures and functional groups One type of malodor that is very noticeable, and is commonly found on worn fabrics is low molecular v~~eight, straight-chain, branched , and unsaturated C6-C 1 I fatty acids that cause axillaiy odor. See "Analysis of Characteristic Odor from Human Male .~.xillae".
X. Zeng, et al., J. Chem. Ecol., pp. 1469-1492, 1991.
25 '.gee also. L'.S. Pat. No. 4,664,909, Marschner et al., issued May 1., 1987.
BE 830,09ft, published October I. 1975, and CA 1,088,428, published October =8.
1980, DE 2.803,176, published August 3, 1978.
Cycllodextrin molecules are known for their ability to form complexes with 30 perfume ingredients and have typically been taught as a perfume carrier.
The prior art teaches they use of drier-added fabric softener sheets containing high levels of cyclodextririlperfume complexes wherein the fabrics treated with this solid cyclodextrin complex release perfume when the fabrics are rewetted The art also teaches that cvclodextriniperfume complexes used in aqueous rinse-added fabric 3Wsoftener compositions must be protected, e.g.. with a hydrophobic wax coating so the cvclodextrinperfume complexes will not decompose due to the presence of water See L' S Pat. Nos. ~.10?.564 Gardlik et al., issued April 7. 199=; 5,=3-1,610.
Gardlik et al . issued .~,ueust 10. 19~_~. ~.=.i-t.6t 1 Tnnh. et al . issued .W Bust IJ. I~~=:, It is therefore hiehls ~ur~r~s;n~= any unerpected to find that fabrics treated with the aqueous compositions of the presen:
mention. which contain low levels of cvclodeutnn. also eahibn pe;-fum: re!:ase upon rewetting This phenomenon creates a benefn in that fabrics treated ~.wh the composition of the present invention will thus remain fresh longer. via a perfume release. when said fabrics are rewetted, such as when the wearer perspires SC'~I'LARY OF THE L~'~'E~T10N
l0 The present invention relates to an aqueous composition for reducing malodor impression on inanimate surfaces comprising:
..~ from about 0 1 % to about 20°,'°, by weight of the composinon, of solubilized: water-soluble alkali metal salt selected from the croup consisting of carbonate salts, bicarbonate salts, and mixtures thereof:
15 B from about 0.0005% to about 1 %, by weight of the composition of perfume;
C: from about 0% to about 5%, by weight of the composition. of solubilized, water-soluble cyclodexttln:
D from about 0% to about 3°~0, by weight of the composition, of soluhilizing aid: and E aqueous carrier: and wherein said composition is essentially free of any material that would soil or stain fabric and wherein the composition contains less than about 5%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7 5 to about 10.5 The composition can be incorporated into a spray dispenser to create an article of manufacture that can facilitate treatment of inanimate articles and,or surfaces with an effective level of the composition in order to reduce malodor impression.
vet not to be discernible when dried on the surface DETAILED DESCRIPT10'~ OF THE C~~'E'~'TIO
The present invention relates to an aqueous composition for reducine malodor impression. comprising:
.4: from about 0 1% to about ~0°~0, by weight of the composmon, ef 35 solubilized, water-soluble alkali metal salt selected from the croup consisting of carbonate salts. bicarbonate salts, and mixtures thereof.

_.t_ B trom about 0.005% to about 1° o. by we~eht of the composmon. of perfume, C from about 0° o to about ~° o, by weieht of the composition. ~ t solubilized, water-soluble cvclode~~trin.
D trom about 0° o to about 3° o, by weight of the composmon. of solubilizins aid, and E. aqueous carrier, and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition contains less than about 5° 0, by weight of the 10 composition. of low molecular weight monohydric alcohol, and wherein the pH
of said composition is from about 7 ~ to about 10.x.
t. CO~iPOSIT10~
(A) SOLCBLE C.~RBO'.~i.~TE AND/OR BICARBONATE S.~LTS
1 ~ Water-soluble alkali metal carbonate and/or bicarbonate salts, such as sodium bicarbonate, potassium bicarbonate, potassium carbonate, cesium carbonate, sodium carbonate, and mixtures thereof, are added to the composition of the present invention in order to help to control acid-type odors. Preferred salts are sodium carbonate monohydrate, potassium carbonate, sodium bicarbonate, potassium bicarbonate.
and ?0 mixtures thereof Solubilized, water-soluble alkali metal carbonate and bicarbonate salts are typically present at a level of from about 0.1% to about 20%, preferably from about 0.2% to about 10%, more preferably from about 0.3% to about 7° o, by weieht of the composition. Compositions with higher concentrations of alkali metal salt can leave unacceptable visible powder and/or stains on fabrics as the solution evaporates ?5 off of the fabrics. This is especially a problem on dark-colored fabrics.
It is preferable that incompatible metal salts, e.g., Ca, Zn, Fe, Ba, not be present because these ions can form water-insoluble carbonate and/or bicarbonate salts. The pH of the aqueous solutions of the present invention is preferably between about 7.5 to about 10 ~, more preferably from about 8 to about 10. If carbonate salts are used, it may be necessay 30 to adjust the pH to the preferred pH ranges.
(B). PERFUME
The perfume selected for use in the fabric freshening composition of the present invention contains inc~.tedients with odor characteristics which are preferred in 3~ order to provide a fresh impression on the surface to which the composition is directed, preferably those which provide a fresh impression for fabrics WO 96/04938 PCTIUS95f09178 x Preferably, at least about 25%, more preferably at least about 50%, most preferably at least about 75%, by weight of the perfume is composed of fragrance material selected from the group consisting of aromatic and aliphatic esters having molecular weights from about 130 to about 250; aliphatic and aromatic alcohols having- molecular weights from about 90 to about 240; aliphatic ketones having molecular weights from about I50 to about 260; aromatic ketones having molecular weights from about 150_ to about 270; aromatic and aliphatic lactones having molecular weights from about 130 to about 290; aliphatic aldehydes having molecular weights from about 140 to about 200; aromatic aldehydes having molecular weights from about 90 to about 230; aliphatic and aromatic ethers having molecular weights from about 150 to about 270; and condensation products of aldehydes and amines having molecular weights from about 180 _to about 320; and essentially free from nitromusks and halogenated fragrance materials.
More preferably, at least about 25%, more preferably at least about 50%, most preferably at least about 75%, by weight of the perfume is composed of fragrance material selected from the group consisting of:
Common Name Chemical Chemical Name Approa.
Type M.W.

adoxal ali hatic 2,6,10-trimethvl-9-undecen-1-al210 aldehvde all '1 amvl I colateester all I am 1 I late l82 allvl cvclohexane ester allvl-3-cvclohe 1 196 ro innate ro innate am l acetate ester 3-meth 1-I-butanol 130 acetate amvl salicvlate ester amvl salicvlate 208 anisic aldehvde aromatic 4-methoxv betvaldehvde136 aldehvde aurantiol schiffbase condensation product 305 of methyl anthranilate and hvdro civonellal bacdanol aliphatic 2-ethyl-4-(2,2,3-trimethyl-3-208 alcohol cvclo enten-1-vl)-2-buten-1-of benzaldehvde aromatic benzaldeh de 106 aldehvde benzo henone aromatic benzo henone 182 ketone benzvl acetate ester bettzvl acetate 150 benzvl salicvlate ester benzvl Bali late 228 beta datttascone aliphatic 1-(2,6,6-trimethyl-1-cyclo-hexen-l92 ketone 1-vI)-2-buten-I-one beta eartuna hexanolalcohol 3-hexen-1-of ~ 100 R'O 96104938 PC1'IUS95109178 -ti-.
buccoxime aliphatic I,5-dimethyl-oxime 167 ketone bicyclo[3,2.1j octan-8-one cedrol alcohol octahydro-3.6.8.8-tetramethyl-222 , IH-3A.7-methanoazulen-6-of cetalox ether dodecahydro-3A,6.6,9A-236 , tetramethvlna htho Z,1B -furan cis-3-hexenvl acetateester cis-3-hexenvl acetateL42 cis-3-hexenvl salicvlateester beta, aroma-hexenvl 220 salicvlate citronellol alcohol 3,7-dimetl I-6-octenol156 citronellv! nitritenitrite eranvl nitrite 151 clove stem oil natural coumarin lactone coumarin 146 cvclohe. 'I salicvlateester cvclohe '1 salicvlate220 cymal aromatic 2-methyl-3-(para iso 190 aldehyde propyl henvl ro ionaldehvde decvl aldehvde ali hatic d laldeh de 156 aldehvde delta damascone aliphatic 1-(2,6,6-trimethyl-3-cyclo-hexen-192 ketone 1- I)-2-buten-1-one dihvdromvrcenol alcohol 3-methvlene-7-methyl IS6 octan-7-of dimethyl benryl ester dimethyl bearyl carbinyl192 carbinyl acetate acetate ethyl vanillin aromatic ethyl vanillin 166 aldeh de ethyl-2-methyl butyrateester ethyl-2-methyl butyrate130 ethylene brassylatemacrocyclic ethylene tridecan-1,13-dioate270 lactone eucal tot ali hatic 1.8-e o - ara-menthane15.1 oxide eu enol alcohol 4-allvl-2-methoxv 164 henol exaltolide macrocyclic cyclopentadecanolide 240 lactone flor acetate ester dihydro-nor-cyclopentadienyl190 acetate florhvdral aromatic 3-(3-iso ro vl henvl)190 aldehvde butanal frutene ester dihydro-nor-cyclopentadienyl206 ro innate galaxclide ether 1,3,4,6,7.8-hexahydro-258 , 4.6,6.7.8,8-hexamethylcyclopenta-gamma-2-benzo vrane gamma decalactone lactone 4-N-hepty-.l-hydrovybutanoic170 acid Iactone gamma dodecalactone lactone 4-N-ocyl-4-hydroxy-butanoic198 acid lactone eraniol alcohol 3,7-dimethvl-2,6-octadien-1-of15~

gemnyl acetate- ester 3,7-dimethyl-2,6-octadien-t-cl196 acetate eranvl nitrite ester 3.7-diemthvl-2,6-octadienenitrilel49 helional aromatic alpha-methyl-3,4, I92 aldehyde (methylenedioxy) hvdrocinnamaldehvde heliotro in aromatic heliotro in 150 aldeh de hexvl acetate ester hexvl acteate 144 hexvl cinnamic aldehvdearomatic al ha-n-hexvl cinnamic216 aldehvde aldehvde hexvl salicvlate ester he I salicvlate 222 hvdroxvambran ali hatic 2 clodod 1- ro of 226 alcrohol hvdroxvcitronellal ali bout hvdroxvcitronellal 172 aldehdve ionone alpha aliphatic 4-(2,6,6-uimethyl-1- 192 ketone clohexenvl-1- I -3-buten-2-one ionone beta aliphatic 4-(2,6,6-trimethyl-1-cyclohexen-192 ketone 1- 1)-3-butene-Zone ionone gamma methyl aliphatic 4-(2,6,6-Irimethyl-2-cyclohexyl-206 ketone I- p-3-methyl-3-buten-2-one iso E super aliphatic 7-acetyl-1,2,3,4,5,6,7,8-234 ketone octahydro-1,1,6,7,tetramethyl na hthalene iso eu enol ether 2-methoxv-4-(I- ro 164 nvl henol iso jasmone aliphatic 2-methyl-3-(2-pentenyl)-2-166 ketone cvclo enten-I-one koavone ali hatic acetyl di-isoam lene l82 aldehvde lauric aldehvde ali bout lauric aldehvde l84 aldehvde lavandin natural lavender natural lemon CP natural major component d-limonene d-limonene/otange allcene I-methyl-4-iso-propenyl-1-l36 terpenes cvclohexene linalool alcohol 3-hydroxy-3,7-dimethyl-1,6-15.1 octadiene

2/97442 -g_ linalyl acetate ester 3-hydroxy-3,7-dimethyl-1.6-196 octadiene acetate lrg 201 ester 2:1-dihydroxy-3.6-dimethyll96 benzoic acid methyl ester lyral aliphatic 4-(4-hydroxy-4-methyl-pentyl)2I0 aldehyde 3-cvlcohexene-lcarboxaldehvde tnajantol aliphatic 2,2-dimethyl-3-(3-methylphenyl)-I78 alcohol ro anol mayol alcohol 4-(1-methylethyl) I56 cyclohexane metttanol methyl anthranilate aromatic meth t-2-aminobenzoate151 amine methyl beta na hthvlaromatic methyl beta na hthvl I70 ketone ketone ketone methyl cedrvlone ali hatic methyl cedronvl ketone246 ketone methyl chavicel ester 1-methyloxy-4,2-propen-148 1-vlbenzene methyl dihvdro 'asmonateali hatic meth 1 dihvdro 'asmonate226 ketone methyl non 1 acetaldehali hatic meth I nonvl acetaldehydeI84 de aldehvde musk indanone aromatic 4-acetyl-6-tert butyl-I,1-dimethyl244 ketone indane nerol alcohol 2cis-3,7-dimethyl-2,6-octadien-154 I-of nonalactone lactone 4-hvdroxvnonanoic I56 acid.lactone norlimbanol aliphatic 1-(2,2,6-trimethyl-cyclohexyl)-3-226 alcohol hexanol orange CP natural major component d-limonene P. T. bucinal aromatic 2-methyl-3(para tert 204 aldehyde butylphenyl) ro ionaldeh de ara hvdroxv henvl aromatic ara hvdro henvl butanone164 butanone ketone atchouli natural henvl acetaldehyde aromatic loxo-2- henvlethane 120 aldehvde phenyl acetaldehyde aromatic phenyl acetaldehyde 166 dimethyl aldehyde dimethyl acetal acetal henvl ethyl acetate ester henvl ethyl acetate 164 henvl ethyl alcohol alcohol henvl ethyl alcohol 122 henvl ethyl henvl ester 2- henvlethvl henvl 240 acetate acetate henvl hexanoU henoxanolalcohol 3-methyl-5- henvl 178 entanol polysantol aliphatic 3,3-dimethyl-5-(2,2,3-trimethyl-221 alcohol 3-cyclopenten-1-vl)-4- enten-2-of WO 96/04938 2 l 9 7 4 4 2 PCTIU895/09178 renvl acetate ester 2-methvlbuten-2-ol-S-acetate128 rosa hen aromatic 2-me~:nl-5- henvl 178 alcohol entanol sandalwood natural alpha-terpinene aliphatic 1-methyl-f-iso- l36 alkane ro vlcvclohexadiene-1.3 terpineol (alpha alcohol para-menth-1-en-8-ol,l5-1 terpineol and para-beta to ineol) menth-1-en-1-of to invl acetate ester ara-menth-l-en-8-vl 196 acetate tetra hvdro linaloolali htic 3,7-dimethvl-3-octanol158 alcohol teVahvdromvrcenol ali hatic 2,6-dimethvl-2-octanolI58 alcohol tonalid/musk plus aromatic 7-acetyl-1,1,3,4,3,6-hexamethyl258 ketone tetralin undecalactone lactone 4-N-heptyl-4-hydroxybutanoic18.1 acid lactone undecavertol alcohol 4-methyl-3-decen-5-of170 undecvl aldeh de ali hatic undecanal 170 aldehvde undecvlenic aldehvdeali hatic undecvlenic aldehvde 168 aldehvde vanillin aromatic 4-hydroxy-3- 152 aldehyde methoxvben7aldeh de verdox ester 2-tert-bu 1 cvclohe 198 I acetate vertenex ester 4-tert-bu 1 cvclohexvl198 acetate and mixtures thereof.
When high initial perfume odor impact on fabrics is desired, it is also preferable to select a perfume containing perfume ingredients which are not too hydrophobic.
The less hydrophobic perfume ingredients are more soluble in water, and are more available in the freshening composition. The degree of hydrophobicity of a perfume ingredient can be correlated with its octanoUwater partitioning coefTicient P.
The octanoUwater partitioning coefficient of a perfume ingredient is the ratio between its equilibrium concentration in octanol and in water. A perfume ingredient with a greater partitioning coefficient P is more hydrophobic. Conversely, a perfume ingredient with a smaller partitioning coefficient P is more hydrophilic. The preferred perfume ingredients of this invention have an octanoUwater partitioning coefficient P
of about 1,000 or smaller. Since the partitioning -coefficients of the perfume ingredients normally have high values, they are more conveniently given in the form of their IS logarithm to the base 10, IogP. Thus the perfume ingredients of this invention have IogP of about 3 or smaller.
The loge of many perfume ingredients has been reported; for example, the Pomona92 database, available from Daylight Chemical Information Systems, Inc.

In lDavlo~ CIS). Irvine. California. contains many, alone wrath citanons t~ the or~.;_:nai IUerature However. the IoeP values are most conveniently calculated by :he "CLOGP" program. also available from Daylight CIS This program also e~penmental IoeP values when they are available m the Pomona9= database The "calculated IoeP" (CIoQP) is determined by the fragment approach of Hansch and Leo Icf.. .~ Leo, in Comprehensive Vtedictnal Chemistry, Vol .l, C Hansch. P G
Sammens. ! B Taylor and C .~ Ramsden. Eds., p. .95. Peraamon Press. l~~u) , The fragment approach is based on the cherrucal structure of each perfume ingredient, and takes into account the numbers and types of 10 atoms. the atom connectivity, and chemical bonding. The CloeP values. which are the most reliable and widely used estimates for this physicochemical property, are used instead of the experimental IogP values in the selection of perfume ingredients which are useful in the present invention.
ion-limiting examples of perfume ingredients which have CIoeP values of 15 about 3 or smaller are benzaldehyde, benryl acetate, cis-3-hexenyl acetate, coumarin.
dihydromvrcenol; dimethyl benryl carbinyl acetate, ethyl vanillin, eucalvptol, euaenol.
iso eugenol, flor acetate, geraniol, hydroxycitronellal, koavone, linalool, methyl anthranilate, methyl beta naphthyl ketone, methyl dihydro jasmonate, nerol.
nonalactone, phenyl ethyl acetate, phenyl ethyl alcohol, alpha terpineol, beta terpineol.
'_'0 vanillin, and mixtures thereof.
When hydrophilic perfume is desired, at least about ~5°,'° by weiuht of the perfume, more preferably about 50%, most preferably about 75°~0, is composed of perfume ingredients having a ClogP of about 3 or smaller.
Preferably the freshening composition contains an effective amoum of perfume .5 to provide the freshening fragrance to fabrics when first sprayed, some lingering fragrance in-wear, and some extra fragrance to be released upon fabric rewettine Effective level of perfume is from about 0.0005% to about I%, more preferably from , about 0.01% to about 0.5°~0, most preferably from about 0 015% to about 0 3°~a. by weight of the composition. The perfume to cyclodextcin weight ratio is typically from 30 about 3:100 to about 100:100, preferably from about 4 100 to about ~0 100.
more preferably from about 5:100 to about .5 100.
(C). CYCLODE!CTRIN
Optionally, but preferably, solubilized, highly water-soluble, cyclodextnn can

3 ~ be added to the composition of the present invention. As used herein, the term "cvclodextrin" includes any of the known cyclodextrins such as unsubstituted cvclodextcins -containing from six to twelve glucose units, especially. alpha _. ~,.
cyclodextrin, beta-cyclodextrin, gamma-cyclodextrin and/or their derivatives and/or mixtures thereof The alpha-cyclodextrin consists of six glucose units, the beta-cyclodextrin consists of seven glucose units, and the gamma-cyclodextrin consists of eight glucose units arranged in a donut-shaped ring. The specific coupling and conformation-of the glucose units give the cyclodextrins arigid, conical molecular structure with a hollow interior of a specific volume. The "lining" of the internal cavity is formed by hydrogen atoms and glycosidic bridging oxygen atoms, therefore this surface is fairly hydrophobic. The unique shape and physical-chemical property of the cavity enable the cyclodextrin molecules to absorb (form inclusion complexes with) organic molecules or parts of organic molecules which can fit into the cavity.
Many perfume molecules can fit into the cavity.
Non-derivatised (normal) beta-cyclodextrin can be used although it is not preferred due to its low solubility. When non-derivatised beta-cyclodextrin is used, the aqueous solution becomes cloudy and is not clear, as preferred by the present invention. Not to be limited by theory, it is believed that some beta-cyclodextrin and/or beta-cyclodextrin/perfixme complexes solidify and/or precipitate out producing an undesirable cloudy aqueous solution.
Preferably, the odor absorbing solution of the present invention is clear. The term "clear" as defined herein means transparent or translucent, preferably transparent as in "water clear," when observed through a layer having a thickness of less than about 10 cm.
Preferably, the cyclodextrins used in the present invention are highly water-soluble such as, alpha-cyclodextrin and derivatives thereof, gamma-cyclodextrin and derivatives thereof, derivatised beta-cyclodextrins, and/or mixtures thereof.
The derivatives of cyclodextrin consist mainly of molecules wherein some of the OH
groups are converted to OR groups. Cyclodextrin derivatives include, e.g., those with short chain alkyl groups such as methylated cyclodextrins, and ethylated cyclodextrins, wherein R is a methyl or an ethyl group; those with hydroxyalkyl substituted groups, such as hydroxypropyl cyclodextrins and/or hydroxyethyl cyclodextrins, wherein R is a -CH2-CH(OH)-CH3 or a -CH2CH2-OH group; branched cyclodextrins such as maltose-bonded cyclodextrins; cationic cyclodextrins such as those containing hydroxy-3(dimethylamino)propyl ether, wherein R is CH2-CH(OH)-CH2-N(CH3)2 which is cationic at low pH; quaternary ammonium, e.g., 2-hydroxy-3-(trimethylammonio)propyl ether chloride groups, wherein R is CH2-CH(OH)-CH2-N+(CH3)3C1-;anionic cyclodextrins such as carboxymethyl cyclodextrins, cyclodextrin sulfates, and cyclodextrin succinylates; amphoteric cyclodextrins such as carboxymethyUquaternary ammonium cyclodextrins; cyclodextrins wherein at least - 1.
one ~lucopyranosf~ unit has a ~-b-anhvdro-cvclomalto structure. a ~ . the T,ono-_-~-anhydrocvclodettnns. as disclosed in "Optimal Performances wrath ~tintmal Chemical Vloditicaoon of C~~ clodertrins". F Diedaim-P~lard and B Perlv. The ~th lnternaoonal Cvclodextnn Symposium .-abstracts. .~pril 19q.~, p a~
and mt:xtures thereof Other cvclodextrin derivatives are disclosed in l.~ S
Pat '~os ;.-1=6.()I1. Parmerter et al, issued Feb 4, 1969, ;.-~~;.=~~. :
~~;_=~8.
3.453.=59: ;ind 3.153.260, all in the names of Parmerter et al.. and all issued lulu 1.
1969; 3.459,731, Gramera et al., issued Aug. ~, 1969; 3,5~3.191. Parmer<er et al.
issued lan. >. 1971: 3.565.887, PatTnerter et al. issued Feb .3, 1971.
~.~3~.l~=.
10 Szeitli et al , issued Aug. 13, 1985; 4,616.008, Hirai et al., issued Oct .
1986.

4.678.598, Ogino et al., issued Jul 7, 1987; 4,638,058, Brandt et al., issued tan Ø
1987; and 4.746,734. Tsuchivama et al., issued May 24, 1988.
Higl'~y water-soluble cyclodextrins are those having water solubility of at least 15 about 10 g in 100 ml of water at room temperature, preferably at least about 30 g in 100 ml of ~~~ater, more preferably at least about 25 g in 100 ml of water at room temperature. Examples of preferred water-soluble cyclodextrin derivatives suitable for use herein arc hydroxypropyl alpha-cyclodextrin, methylated alpha-cvclodextrin.
methyiated beta-cyciodextrin, hydroxyethyl beta-cyclodextrin. and hydroxvpropyl beta-'_'0 cyclodextrin. Hydroxyalkyl cyclodextrin derivatives preferably have a degree of substitution of from about 1 to about 14, more preferably from about l.5 to about 7, wherein the total number of OR groups per cyclodextrin is defined as the degree of substitution. Methylated cyclodextrin derivatives typically have a degree of substitution of fram about 1 to about 18, preferably from about 3 to about 16 .~
?5 known me,thylated beta-cvclodextrin is heptakis-2,6-di-O-methyl-a-cyclodextrin, commonly I~cnown as D)frIEB, in which each glucose unit has about 2 methyl groups with a degree of substitution of about 14 A preferred, more commercially available methylated beta-cyclodextrin is a randomly methylated beta-cyclodextrin having a degree of substitutian of about 12.6 The preferred cyclodextrins are available, a g .
30 from American Maize-Products Company and blacker Chemicals (L'SA). Inc.
It i.<<~ also preferable to use a mixture of cyclodextrins Such mixtures can complex with a wider range of perftrme molecules having a wider range of molecular sizes. Preferably at least a portion of the cyclodextrins is alpha-cyclodextrin and its derivatives thereof, gamma-cyclodextrin and its derivatives thereof, andior derivatised 35 beta-cvclodextrin, and mixtures thereof ' Cvclodextrin molecules are known for their ability to form complexes with perfume instredients and have typically been taught as a perfume carrier The pnor art - l; _ teaches the use of drier-added fabric softener sheets contairun~ hu~'r; !ev el; of cvciodertrir: perfume comple~ces wherein the fabric; treated mth thr; solid cvclodextrin complex release perfume when the fabrics are rewetted The ar, ~i;o teaches that ~.vciodextnn perfume completes used m aqueous r inse-added iabnc softener cornpositions must be protected, a ~ . with a hydrophobic wax coatm;
;o the cyclodextrin~perfume complexes will not decompose due to the presence of water See C;.S Pat ;~os _.10'_'.564 Gardlik et al , issued :~pril 7, 199., =.=;.x,6(0. Gardlil:
et al., issued. .W gust 10. 1993; 5,.34,61 1 Trinh. et al., issued .W Qust f 0. 199;.
It is therefore hiehlv surprising and unexpected to find that fabrics treated with the aqueous compositions of the present invention. which contain low levels of unprotected cvclodextrin, also exhibit perfume release upon rewetting. This phenomenon provides a benefit in that fabrics treated with the composition of the present invention will thus remain fresh longer, via a perfume release, when said fabrics are rewetted, such as when the wearer perspires For reducing malodor impression on fabrics, the composition is preferably used as a spray. It is preferable that the composition of the present invention contain low levels of cy<:lodextrin so that a visible stain does not appear on the fabric at normal usage levels. Preferably, the solution is not discernible when dry Typical levels of cyclodextrin are from about 0.1% to about S%, preferably from about 0 '_'% to about 4%, more preferably from about 0.3% to about 3°,'0, most preferably from about 0 -i°~o to about ~%, by weight of the composition. Compositions with higher concentrations can leave unacceptable visible stains on fabrics as the solution evaporates off of the fabric. This. is especially a problem on thin, colored, synthetic fabrics. In order to avoid or minimize the occurrence of fabric staining, it is preferable that the fabric be treated at a level of less than about 5 mg of cyclodextrin per mg of fabric, more preferably less than about 2 mg of cyclodextrin per mg of fabric.
Con<:entrated compositions can also be used in order to provide a less expensive product. When a concentration is used, i.e., when the level of cyclodextrin used is from. about 3% to about 5%, it is preferable to dilute the composition before treating fabrics in order to avoid staining. Preferably the cyclodextrin is diluted with about 50% to about X000%. more preferably with about 60°.% to about 1000°.%, most preferably with abaut 75°% to about 500%, by weight of the composition.
of water (D). SOLC'B1LIZI'~1G .4ID
3 5 The composition of the present invention can also optionally contain a solubilizing .aid to solubilize any excess hydrophobic organic materials. a e., perfume.
insect repelling agent., antioxidant. etc.. that are not readily soluble in the compositcon.

WO 96104938 219 l q 4 2 PCT~S95/09178 to form a clear solution. A suitable solubilizing aid is surfactant, preferably no-foaming or low-foaming surfactant. Suitable surfactants are nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, and mixtures thereof Suitable surfactants can be emulsifiers and/or detersive surfactants. Mixtures of emulsifiers and detersive surfactants are also preferred. When a surfactant containing one, or more, aliphatic alkyl group is used, it is preferred that it contain relatively short alkyl chains of from about 5 to about 14 carbon atoms. Preferred nonionic surfactants are polyethylene glycol-polypropylene glycol block copolymers, such as Pluroruc~ and Pluronic R~ surfactants from BASF;
Tetronic~ and Tetronic R~ surfactants from BASF, ethoxylated branched aliphatic diols such as Surfynol~ surfactants from Air Products; ethoxylated alkyl phenols, such as Igepal~ surfactants from Rhone-Poulenc; ethoxylated aliphatic alcohols and carboxylic acids; polyethylene glycol dieste;s of fatty acids; fatty acid esters of ethoxylated sorbitans; and mixtures thereof Preferred anionic.surfactants are dialkyl sulfosuccinate, alkylarylsulfonate, fatty, alcohol sulfate, paraffin sulfonate, alkyl sarcosinate, alkyl isethionate salts having suitable cations,e.g., sodium, potassium, alkanol ammonium, etc., and mixtures thereof Preferred amphoteric surfactants are the betaines. It is preferred that the surfactant have good wetting properties. Also preferred are surfactants that have the hydrophilic groups situated between hydrophobic chains, such as Pluronic R~ surfactants, Surfynol surfactants, polyethylene glycol diesters of fatty acids, fatty acid esters of ethoxylated sorbitans, dialkyl sulfosuccinate, di(Cg-C12 alkyl)di(CI-C2 allcyl)ammonium halides, and mixtures thereof or surfactants that have the hydrophobic chains situated between hydrophilic groups, such as Pluronic surfactants; and mixtures thereof Mixtures of these surfactants and other types of surfactants are also preferred to form no-foaming or Iow-foaming solubilizing agents. PolyaLkylene, glycol can be used as a defoaming agent in combination with the solubilizing agents.
If solubilizing agent is used in the present compositions, it is typically used at a level offrom about 0.05% to about 1% by weght of the composition, more preferably from about 0.05% to about 0.3%, most preferably from about 0.1% to about 0.3%, by weight of the composition.
(E). CARRIER
Aqueous solutions are preferred in the present invention for the reduction of malodor impression. The preferred aqueous carrier of the present invention is water.
The water which is used can be distilled, deionized,, or tap water. Water containing a small amount of low molecular weight monohydric alcohols, e.g., ethanol,-methanol, . 2191442 and isopropanol, or polyols, such as ethylene glycol and propylene glycol, can also be useful. However, the volatile low molecular weight monohydric alcohols such as ethanol and/or isopropanol should be limited since these volatile organic compounds will contribute both to flammability problems and environmental pollution problems. If small amounts of low molecular weight monohydric alcohols are present in the composition of the present invention due to the addition of these alcohols to such things as perfumes and as stabilizers for some preservatives, it is preferably that the level of monohydric alcohol be less than about 5%, preferably less than about 3%, more preferably less than about 1%, by weight of the composition.
It has recently been discovered that water has an unexpected odor controlling effect of its own. It has been discovered that the intensity of the odor generated by some polar, low molecular weight organic amines, acids, and mercaptans is reduced when the odor-contaminated fabrics are treated with an aqueous solution. Not to be bound by theory, it is believed that water solubilizes and depresses the vapor pressure IS of these polar, low molecular weight organic molecules, thus reducing their odor intensity.
(E). OTHER OPTIONAL INGREDIENTS
Adjuvants can be optionally added to the fabric freshening composition herein for their known purposes. Such adjuvants include, but are not limited to, preservatives, bacteriocides, fungicides, water-soluble polymers, antistatic agents, insect and moth repelling agents, colorants, especially bluing agents, antioxidants, and mixtures thereof.
(I). Preservative The composition of the present invention can optionally contain solubilized, water-soluble, antimicrobial preservative, especially when cyclodextrin is added to the composition because cyclodexttin molecules are made up of varying numbers of glucose units which can make them a prime breeding ground for certain - microorganisms, especially when in aqueous compositions. This drawback can lead to the problem of storage stability of cyclodextrin solutions for any significant length of time. Contamination by certain microorganisms with subsequent microbial growth resulting in an unsightly and/or malodorous solution. Because microbial growth in cyclodextrin solutions is highly objectionable when it occurs, it is preferable to include a water-soluble, antimicrobial preservative, which is effective for inhibiting and/or regulating microbial growth in order to increase storage stability of the preferably clear, aqueous odor-absorbing solution containing water-soluble cyclodextrin.

Typical microorganisms that can be found in cyclodextrin supplies and whose growth are found to be_enhanced by the presence of cyclodextrin in aqueous cyclodextrin solutions include bacteria, e,g., Bacillus Lhuringiensis (cereus group) and bacillus sphaericus; fungi, e.g., Aspg_r il us ustus. a ill c .1 ha >; ...c is one -o_f the most numerous members of Bacillus species in soils. Asper2illus ustus is common in grains and flours which are raw materials to produce cyclodextrins.
Microorganisms such as bscherichia coliand Pse omQ ac aenaginoca ue -found in some water sources, and can be introduced during the preparation of cyclodextrin aqueous solutions. ' It is preferable to use a broad spectrum preservative, e.g., one that is effective on both bacteria (both gram positive and gram negative) -and fungi. A limited spectrum preservative, e.g., one that is only effective on a single group of microorganisms, e.g., fungi, cais: be used in combination with a broad spectrum preservative or other limited spectrum preservatives, with complimentary activity. A
mixture of broad spectrum preservatives can also be used.
Antimicrobial preservatives useful in the present invention can be biocidal compounds, i.e., substances that kill microorganisms, or biostatic compounds, i.e., substances that inhibit and/or regulate the growth of microorganisms.
Preferred antimicrobial preservatives are those that are water-soluble and are effective at low levels because the organic preservatives can-form inclusion complexes with the cyclodextrin molecules and compete with the perfume molecules for the cyclodextrin cavities, thus rendering the cyclodextrins,ineffective as freshening actives.
Water-soluble preservatives useful in the present invention are those that have a solubility in water of at least about 0.3 g per 100 ml of water, i.e., about 0.3% at room temperature, preferably greater than about 0.5% at room temperature. These types of preservatives have a lower affinity to the cyclodextrin cavity, at least in the aqueous phase, and are therefore more available to provide antimicrobial activity.
Preservatives with a water-solubility of less than about 0.3% and a molecular structure that readily fits into the cyclodextrin cavity, have a greater tendency to form inclusion complexes with the cyclodextrin molecules, thus rendering the preservative less effective to control microbes in the cyclodextrin solution. Therefore, many well known preservatives such as short chain alkyl esters of p-hydroxybenzoic acid, commonly known as parabens; N-(4-chlorophenyl)-N'-(3,4-dichlorophenyl) urea, also known as 3,4,4'-trichlorocarbanilide or triclocarban; 2,4,4'-trichloro-2'-hydroxy diphenyl ether, commonly known as triclosan are not preferred in the present invention since they are relatively ineffective when used in conjunction with cyclodextrin.

R'O 96!04938 219 7 4 4 2 pCT~S95109178 The water-soluble antimicrobial preservative is included in the present invention it is included at an effective amount. The term "effective amount"
as herein defined means a level sufficient to prevent spoilage or prevent growth of inadvertently added microorganisms for a specific period of time, but not sufficient enough to contribute to the odor absorbing performance of the composition. In other words, the preservative is not being used to kill microorganisms on the surface onto which the composition is deposited in order to eliminate odors produced by microorganisms.
Instead, it is preferably being used to prevent spoilage of the cyclodextrin solution in order to increase the shelf life of the composition. Preferred levels of preservative are from about 0.0001% to about 0.3%, more preferably from about 0.0002% to about 0.2%, most preferably from about 0.0003% to about 0.1%, by weight of the composition.
The preservative can be an organic material, which will not cause damage to fabric appearance, e.g., discoloration, coloration, bleaching. Preferred water-soluble preservatives include organic sulfur compounds, halogenated compounds, cyclic organic nitrogen compounds, low molecular weight aldehydes, quaternary compounds, dehydroacetic acid, phenyl and phenoxy compounds, and mixtures thereof The following are non-limiting examples of preferred water-soluble preservatives for use in the present invention.
(a). Organic Sulfur Compounds Preferred water-soluble preservatives for use in the present invention are organic sulfur compounds. Some non-limiting examples of organic sulfur compounds suitable for use in the present invention are:
_ (i). 3-Isothiazolone Compounds A preferred preservative is an antimicrobial, organic preservative containing 3-isothiazolone groups having the formula:
Rl O
S
R Y
wherein Y is an unsubstituted alkyl, alkenyl, or alkynyl group of from about 1 to about 18 carbon atoms, an unsubstituted or substituted cycloalkyl group having from about a 3 to about a 6 carbon ring and up to 12 carbon atoms, an unsubstituted or substituted - is -arall;yl group of up to about I~~ carbon atoms. or an unsubsmuted or subsmuted an;
group of up to about I a carbon atoms.
R 1 is hydroeen. halogen. or a ( C 1-C.~ ) all. l group. and R= is hydro<7en. halocen. or a (C 1-C,~) all.~_ I eroup - Preferably. when ~' is methyl or ethyl, R 1 and R= should not both be hv_ droQen Salts of the~;e compounds formed by reacting the compound with acids such as hydrochloric, nitric. sulfuric. etc are also suitable This class of compounds is disclosed in (.' S Pat Vo -l.=6.399. Lewis et al issued 'lay ~, l98 l , Examples of said compounds are s-chloro-2-methyl--i-isothiazolin-3-one; =-n-butyl-3-isothiazolone. ~-benzyl-3-isot',wazolone: 2-phenyl-3-isothiazolone, ''-methyl--t,p-dichloroisothiazolone.
-chloro-'_'-methyl-:~-isothiazolone. '_'-methyl-4-isothiazolin-3-one; and mixtures thereof .~ preferred preservative is a water-soluble mixture of 3-chloro-2-methyl-.~
isothiazolin-3-one and ~-methyl-4-isothiazolin-3-one, more preferably a mixture of 1 ~ about 77°~0 5-chloro-2-methyl-.~-isothiazolin-3-one and about ''3%
''-methyl-.~-isothiazolin-3-one, a broad spectrum preservative available as a 1 5° o aqueous solution under the trade name Kathon~ CG by Rohm and Haas Company When Kathon~ is used as the preservative in the present invention it is typically present at a level of from about 0.0001% to about 0 01°~0, preferably from ~0 about O OOOi:% to about 0.005°~0, more preferably from about 0 0003°:o to about 0 003°~0, mos,t preferably from about 0 0004% to about 0 002°,'°, by weight of the composition.
(ii). Sodium PvMthione .5 .~rtotlier preferred organic sulfur preservative is sodium pvtithione. with water solubility of ~ibout :50°io. When sodium pyrithione is used as the preservative in the present invention it is typically present at a level of from about 0 0001 ° o to about 0 01 %, preferably from about 0.0002% to about 0.005%, more preferably from about 0.0003% to about 0.003%, by weight of the composition.
30 Mixtures of the preferred organic sulfur compounds can also be used as the preservative in the present invention.
(b). 8alo~enated Comvounds Preferred preservatives for use in the present invention are haloeenated 3 ~ compounds Some non-limiting examples of halogenated compounds suitable for use in the present invention are:
j.

WO 96!04938 219 7 4 4 2 pypg95/09178 ,.-

5-bromo-5-vitro-1,3-dioxane, available under the trade name Bronidox L~
from Henkel. Bronidox L~ has a solubility of about 0.46% in water. When Brorudox is used as the preservative in the present invention it is typically present at a level of from about 0.0005% to about 0.02%, preferably from about 0.001% to about 0.01%, by weight of the composition;
2-bromo-2-nitropropane-1,3-diol, available under the trade name Bronopol from Inolex can be used as the preservative in the present invention. Bronopol has a solubility of about 25% in water. When Bronopol is used as the preservative in the present invention it is typically present at a level of from about 0.002% to about 0.1%, preferably from about 0.005% to about 0.05%, by weight of the composition;
I,I'-hexamethylene bis(5-(p-chlorophenyl)biguanide), commonly known as chlorhexidine, and its salts, e.g., with acetic and gluconic acids can be used as a preservative in the present invention. The digluconate salt is highly water-soluble, about 70% in water, and the diacetate salt has a solubility of about 1.8% in water.
When chlorohexidine is used as the preservative in the present invention it is typically present at a level of from about 0.0001% to about 0.04%, preferably from about 0.00-05% to about 0.01%, by weight of the composition.
I,1,I-Trichloro-2-methylpropan-2-ol, commonly known as chlorobutanol, with water solubility of about 0.8%; a typical effective level of chlorobutanol is from about 0.1% to about 0.5%, by weight ofthe composition.
4,4'- (Trimethylenedioxy)bis-(3-bromobenzamidine) diisethionate, or dibromopropamidine, with water solubility of about 50%; when dibromopropamidine is used as the preservative in the present invention it is typically present at a level of from about 0.0001% to about 0.05%, preferably from about 0.0005% to about 0.01%
by weight of the composition.
Ivfixtures of the preferred halogenated compounds can also be used as the preservative in the present invention.
(c). Cvclic Organic Nitrogen Compounds Preferred water-soluble preservatives for use in the present invention are cyclic organic nitrogen compounds. Some non-limiting examples of cyclic organic nitrogen compounds suiiable for use in the present invention are:
(i) Imidazolidinedione Compounds Preferred preservatives for use in the present invention are imidazolidione compounds. Some non-limiting examples of imidazolidinedione compounds suitable for use in the present invention are:

VVO 96104938 ~ PCTIUS95109178 1,3-bis(hydroxymethyl)-5,5-dimethyl-2,4-imidazolidinedione, commonly known as dimethyloldimethylhydantoin, or DMDM hydantoin,available as, e.g., Glydant~ from Lonza. I)MDM hydantoin has a water solubility of more than 50%
in water, and is mainly effective on bacteria. When DMDM hydantoin is used, it is preferable that it be used in combination with a broad spectrum preservative such as Kathon CG~, or formaldehyde. A preferred mixture is about a 95:5 DMDM
hydantoin to 3-butyl-2-iodopropynylcarbamate mixture, available under the trade name Glydant Plus~ from Lonza. When Glydant Plus~ is used as the preservative in the present invention, it is typically present at a level of from about 0.005% to about 0.2%;
N-[1,3-bis(hydroxymethyl)2,5-dioxo-4-imidazolidinyl]-N,N'-bis(hydroxymethyl) urea, commoply known as diazolidinyl urea, available under the trade name German II~ from Sutton Laboratories, Inc. (Sutton) can be used as the preservative in the present invention. When Germall III is used as the preservative in the present invention, it is typically present at a level of from about 0.01%
to about 0.1%;
N,N"-methylenebis { N-[ 1-(hydroxymethyl)-2, 5-dioxo-4-imidazolidinyl]urea }, commonly known as imidazolidinyl urea, available, e.g., under the trade name Abiol~
from 3V-Sigma, Unicide U-13~ from Induchem, German 115~ from (Sutton) can be used as the preservative in the present invention. When imidazolidinyl urea is used as the preservative, it is typically present at a level of from about 0.05% to about 0.2%, by weight of the composition.
lectures of the prefe3red imidaaolidinedione compounds can also be used as the preservative in the present invention.
(ii). Polvmethoxy Bicvclic O:azolidine Another preferred water-soluble cyclic organic nitrogen preservative is polymethoxy bicyclic oxazolidine, having the general formula:
H~H
O~N~O
where n has a value of from about 0 to about 5, and is available under the trade name Nuosept~ C from Huls America. When Nuosept~ C is used as the preservative, it is typically present at a level of from about 0.005% to about 0.1%, by weight of the composition-R'O 96104938 2 , ~ 7 4 4 2 PCTIUS95109178 Mixtures of the preferred cyclic organic nitrogen compounds can also be used as the preservative in the present invention.
(d). Low Molecular Weight Aldehvdes (i). Formaldehyde A preferred preservative for use in the present invention is formaldehyde.
Formaldehyde is a broad spectrum preservative which is normally available as formalin which is a 37% aqueous solution of formaldehyde. When formaldehyde is used as the preservative in the present invention, typical levels are from about 0.003% to about 0.2%, preferably from about 0.008% to about 0.1%. more preferably from about 0.01% to about 0.05%, by weight of the composition.
(ii). Glutaraldehvde A preferred preservative for use in the present invention is glutaraldehyde.
Glutaraldehyde is a water-soluble, broad spectrum preservative commonly available as a 25% or a 50% solution in water. When glutaraldehyde is used as the preservative in the present invention it is typically present at a level of from about 0.005%
to about 0.1%, preferably from about 0.01% to about 0.05%, by weight of the composition.
(e). Ouaternarv Compounds Preferred preservatives for use in the present invention are cationic and/or quaternary compounds. Such compounds include polyaminopropyl biguanide, also known as polyhexamethylene biguanide having the general formula:
HCI.NHZ-(CH~3-[-(CH?)3-NH-C(=NH)-NH-C(=NH.HCI)-NH-(CH2)3-lx (CH2)3-NH-C(=NH)-NH
~CN
Polyaminopropyl biguanide is a water-soluble, broad spectrum preservative which is available as a 20% aqueous solution available under the trade name Cosmocil CQ~ from ICI Americas, Inc., or under the trade name Mikrokill~ from Brooks, Inc.
1-(3-Chlorallyl) -3,5,7-triaza-1-azoniaadamantane chloride, available, e.g., under the trade name Dowicil 200 from Dow Chemical, is an effective quaternary ammonium preservative; it is freely soluble iri water; however, it has the tendency to discolor (yellow), therefore it is not highly preferred.
Mixtures ofthe preferred quaternary ammonium compounds can also be used as the preservative in the present invention.

WO 96!04938 PCTlUS95/09178 When quaternary ammonium compounds are used as the preservative in the present invention, they are typically present at a level of from about 0.005%
to about 0.2%, preferably from about 0.01% to about 0.1%, by weight of the composition.
(~. Dehvdroacetic Acid A preferred preservative for use in the present invention is dehydroacetic acid.
Dehydroacetic acid is a broad spectrum preservative preferably in the form of a sodium or a potassium salt so that it is water-soluble. This preservative acts more as a biostatic preservative than a biocidal preservative. When dehydroacetic acid is used as the preservative it is typically used at a level of from about 0.005% to about 0.2%, preferably from about 0.008% to about 0.1%, more preferably from about 0.01%
to about 0.05%, by weight of the composition.
(g). Phenvl and Phenoxv Compounds Some non-limiting examples of phenyl and phenoxy compounds suitable for use in the present invention are:
4,4'-diamidino-a,w-diphenoxypropane diisethionate, commonly known as propamidine isethionate, with water solubility of about 16%; and 4,4'-diamidino-a,~-diphenoxyhexane diisethionate, commonly known as hexamidine isethionate.
Typical effective level of these salts is about 0.0002% to about 0.05%.
Other examples are benzyl alcohol, with a water solubility of about 4%; 2-phenylethanol, with a water solubility of about 2%; and 2-phenoxyethanol, with a water solubility of about 2.67%; typical effective level of these phenyl and phenoxy alcohol is from about 0. I % to about 0.5%, by weight of the composition.
(h) Mixtures thereof The preservatives of the present invention can be used in mixtures in order to control a broad range of microorganisms.
(2). Water-Soluble Polymers Some water-soluble polymers, e.g.-,-water-soluble cationic polymer and water-soluble anionic polymers can be used in the composition of the present invention to provide additional odor control benefits.
a. Cationic oolvmers Water-soluble cationic poiymers, e.g., those containing amino fimctionalities, amido functionalities, and mixtures thereof, are useful in the present invention to control certain acid-type odors.

b. anionic nolvmers ~~ a~:er-soluble amomc polymers. a ~, , pofvacnlic acids and their ~.vater_;~;ub;;
;alts are useful in the present mention to control certain arrune-type odor; P-ei:r-e~
poivacnlic acids .and their alkali metal salts have an averaee molecular we:._ht o; ;:;;
than about Ø000. more preterably less than x,000 Polymers contamn~ suiiomc acid groups. phosphoric acid eroups. phosphonic acid Qroups. and their water-soluble salts.
and mixtuna thereof, and mixtures with carboxylic acid and carboxviate e_rouvs. are also suitabin eater-soluble polymers containing both cationic and anionic functionalities are 10 also suitable Examples of these polymers are given in ~.S. Pat .x.909.986, issued Vfarch .0, 1990 to :~ Kobayashi and r~. Kawazoe.
another example of water-soluble polymers containing both cationic and anionic functionalities is a copolymer of dimethyldiallyl ammonium chloride and acnUic acid.
commercially available under the trade name Merquat 280~ from Calgon ' I~
(3)- W tistatic .gents The composition of the present invention can optionally contain an effective amount of antistatic agent to provide the treated clothes with in-wear static Preferred antistatic ac;ents are those that are water soluble in at least effective amount, such that .0 the compo<.~ition remains a clear solution. Examples of these antistatic agents are monoalkyl cationic quaternary ammonium compounds, e.g.. mono(C l0-C I,~
allyl)trimethyl ammonium halide, such as monolauryl trimethyl ammonium chloride, hydroxvcetvl hydroxyethyl dimethyl ammonium chloride, available under the trade name Dehv~auart E~ from Henkel, and ethyl bis(polyethoxy ethanol) allcviammoruum ethylsulfate.. available under the trade name Variquat 66~ from Witco Corp .
polyethylerne glycols, polymeric quaternary ammonium salts, such as polymers conforming to the izeneral formula:
-fV(C;H~),-(C.'H,)~-~'H-CO-~'H-(CH,1~-N(CH~),'-CH,CH,OCH~CH,I~'-' _'v[Cl-[
.i 0 available under the trade name Mirapol A-I 5~ from Rhone-Poulenc. and -('~(CH;t,-(CH,>;-iw'H-CO-(CHI)4-CO-Ir'H-(CH>>~-N(CH3),-(CH,CH,OCH,CH,I~' x[CIy.
3~ available under the trade name Wrapol AD-1~ from Rhone-Poulenc. quater~ized polvethylen~~imines, vinylpyrrolidoneimethacrylamidopropyltrimethv_ lammonium chloride copo[vmer, available under the trade name Gafquat HS-100v from G.~F.

triethonium ',iydrol~. zed colla~_en et ho sulfate. available under the trade name Quat-Pr;
E R irom 'la.vbroolc, and mittures thereof It is preferred that a no foam~ne. or low ioammo. agent ~s used. to avoid :yam formation during fabric treatment It is also preferred that polvethomlated agents ~u~;~
as polyethylene Qlvcol or Variquat 66v~ are not used when alpha-cvclodemnn ~;
used The polvethoxvlate groups have a strong affinity to, and readily compies a nh.
alpha-cvclodextrin which in turn depletes the uncomplexed cvclodet-cnn available for odor control When an antistatic agent is used it is typically present at a level of from about 10 0 0~°,-o to ab~~ut 10"~0, preferably from about 0.1°'o to about 5°~0, more preferably ~rom about 0.3°,'o to about :3°~0, by weight of the composition.
(4). Insecn and/or Vtoth Reyelling Agent The ~:omposition of the present invention can optionally contain an effective l ~ amount of insect and/or moth repelling agents. Typical insect and moth repelling agents are pheromones, such as anti-aggregation pheromones, and other natural and; or synthetic inc;redients. Preferred insect and moth repellent agents useful in the composition of the present invention are perfume ingredients, such as citronellol, citraneilal, citral, linalool, cedar extract, geranium oil, sandalwood oil. =
20 (diethylphenoxy)ethanol, 1-dodecene, etc. Other examples of insect andior moth repellents useful in the composition of the present invention are disclosed in C; S Pat ~ios. .1,449,987, 4,693,890, 4,696.676, 4,933,371, 5.030,660, x,196.200, and in "Semio Activity of Flavor and Fragrance Molecules on Various Insect Species".
B D
Mookherjee et al." published in Bioactive Volatile Com~unds from Plants. .aSC
?5 Symposium Series 525, R. Teranishi. R.G. Buttery, and H. Sugisawa, 1993, pp 3:--t8.
When an insect and/or moth repellent is used it is typically present at a level of from about 0 005° ° to about 3%. , !~y weight of the composition.
30 (5) Colorant Colorants and dues, especially bluing agents, can be optionally added to the odor absorbing compositions for visual appeal and performance impression When colorants are used, they are used at extremely low levels to avoid fabric stairun~
Preferred colorants far use in the present compositions are highly water-soluble dyes.
3~ e.e.. Liquitirtt$ dues available from !~tilliken Chemical Co lion-limiting examples of suitable dvea are. Liquitint Blue HP'9, Liquitint Blue 65'x. Liquitint Patent BIueB.
Liquitint Royal Blues. Liquitint Experimental Yellow 8949-.~3~. Liquitint Greer, WO 96104938 2 ~ 9 7 4 4 2 P~,~S95/09178 HMC~, Liquitint Yellow II~, and mixtures thereof, preferably Liquitint Blue HP~, Liquitint Blue 65~. Liquitint Patent Blue~, Liquitint Royal Blue~, Liquitint Experimental Yellow 8949-43~, and mixtures thereof

(6) Low Molecular WeiEht Polvols Low molecular weight polyols with relatively high boiling points, as compared to water, such as ethylene glycol, propylene glycol and/or glycerol are preferred optional ingredients for improving odor control performance of the composition of the present invention. Not to be bound by theory, it is believed that the incorporation of a small amount of low molecular weight glycols into the composition of the present invention enhances the formation of the cyclodextrin inclusion complexes as the fabric dries.
It is believed that the polyols' ability to remain on the fabric for a longer period of time than water, as the fabric dries, allows them to form ternary complexes with the cyclodextrin and some malodorous molecules. The addition of the glycols is believed to fill up void space in the cyclodextrin cavity that is unable to be filled by some malodor molecules of relatively smaller sizes. Preferably the glycol used is ethylene glycol, and/or propylene glycol. Cyclodextrins prepared by processes that result in a Level of such polyols are highly desirable, since they can be used without removal of the polyols.
When glycols are added to the composition of the present invention the preferred weight ratio of low molecular weight polyol to cyclodextrin is from about 1:1,000 to about 20:100, more preferably from about 3:1,000 to about 15:100, even more preferably from about 5:1,000 to about 10:100, and most preferably from about 1:100 to about 7:100.
II. ARTICLE OF MANUFACTURE
The composition of the present invention can also be used in an article of manufacture comprising said composition plus a spray dispenser. When the commercial embodiment of the article of manufacture is used, it is optional, but preferable, to include the preservative. Therefore, the most basic article of manufacture comprises uncompIexed cyclodextrin, a carrier, and a spray dispenser.
SPRAY DISPENSER
The article of manufacture herein comprises a spray dispenser. The composition is placed into a spray dispenser in order to be distributed onto the fabric. Said spray dispenser is any of the manually activated means for producing a spray of liquid =s _ droplets as ~s known :n the art. a ~= tn~lger-type. pump-type. non-aerosol ;~I;-pressurtzed, and aerosol-type spray means The spray dispenser herein does not Include thosf~ that will substantially foam the clear, aqueous (t is preferred that at least about ~~0° o. more preferably. at least about q0° °
of the droplets have a par:cie size of lamer than about 30um The spray dispenser can be an aerosol dispenser Said aerosol d;spenser comprises a container which can be constructed of any of the conventional matenals employed ir. fabricat.ing aerosol containers The dispenser must be capable of withstandine internal pressure in the range of from about .0 to about 1 l0 p s ; _; .
l0 more preferably from about .0 to about 70 p.s.i g. The one important requirement concerning the dispenser is that it be provided with a salve member which will permit the clear. aqueous; odor absorbing composition contained in the dispenser to be dispensed in the fotzn of a spray of very fine, or finely divided, particles or droplets The aerosol dispenser utilizes a pressurized sealed container from which the 15 composition is dispensed through a special actuator/valve assembly under pressure The aerosol dispenser is pressurized by incorporating therein a gaseous component generally (mown as a propellant Common aerosol propellants, e.g., gaseous hydrocarbons such as isobutane, and mixed halogenated hydrocarbons, are not preferred. Halogenated hydrocarbon propellants such as chlorofluoro hydrocarbons ?0 have been alleged to contribute to environmental problems. Hydrocarbon propellants can form complexes 'with the cyclodextrin molecules thereby reducing the availability of uncomplexed cyclodex~ttin molecules for odor absorption Preferred propellants are compressed air, nitrogen, inert gases, carbon dioxide, etc. .~ more complete description ~of commercially available aerosol-spray dispensers appears in ~' S Pat ~ios.: 3,435,772, Stebbins, issued April 8, 1969; and 3,600,35, Kaufman et al .
issued August 17, 1971.
Pre&;rably the spray dispenser can be a self pressurized non-aerosol container having a co~nvoiuted liner and an elastomeric sleeve Said self pressurized dispenser comprises a linerisleeve assembly containing a thin, flexible radially expandable 30 convoluted plastic liner of from about 0.010 to about 0.020 inch chick, inside an essentially c:vlindrical elastomeric sleeve. The liner/sleeve is capable of holding a substantial quantity of odor-absorbing fluid product and of causing said product to be dispensed .~ more complete description of self pressurized spray dispensers can be found in (: S Pat. !~os. x.111,971. Winer, issued May I?, 1992, and _.=3=.1~6.
35 Winer, issued .4ug. 3. 1993.
.W tothcr type of aerosol spray dispenser is one wherein a barrier separates the odor absorbing composition from the propellant (preferably compressed air or noroeen 1 and disclosed m C.~ S Pat ~o -l.=00, I I u. issued .-~pnl '. i ~S l .
Such a dispenser is available from EP Spray Systems. East Hanover. Vew Jersey ~ton~ preferably. the spray dispenser is a non-aerosol. manually act»ated.
pump-spray dispenser Said pump-spray dispenser comprises a container and a pump mechanism which securely screws or snaps onto the container The container comprises a vessel for containing the aqueous odor-absorbing composition to be dispensed.
The pump mechanism comprises a pump chamber of substantially fixed 10 volume, having an opening at the inner end thereof. Within the pump chamber ~s located a pump stem having a piston on the end thereof disposed for reciprocal motion in the pump chamber. The pump stem has a passageway there through with a dispensing outlet at the outer end of the passageway and an axial inlet port located inwardly thereof 15 The container and the pump mechanism can be constructed of any conventional material employed in fabricating pump-spray dispensers, including, but not limited to polyethylene:: polypropylene; polyethyleneterephthalate; blends of polyethylene, vinyl acetate, and rubber eiastomer. A preferred container is made of clear,, a g..
polyethylene: terephthalate. Other materials can include stainless steel. A
more 20 complete disclosure of commercially available dispensing devices appears in U S. Pat.
Nos.. 4,89~~.279, Schultz, issued January 23, 1990; 4,735,347, Schultz et al., issued April ~, 1988; and 4,274,560, Carter, issued June 23, 1981~
Most preferably, the spray dispenser is a manually activated trigger-spray 25 dispenser. Said trigger-spray dispenser comprises a container and a trigger both of which can be constructed of any of the conventional material employed in fabricating trigger-spray dispensers, including, but not limited to: polyethylene;
polypropylene:
polyacetal; polycarbonate; polyethyleneterephthalate; polyvinyl chloride;
polystyrene; blends of polyethylene, vinyl acetate, and rubber elastomer.
Other 30 materials ca:n include stainless steel and glass. A preferred container is made of clear.
a g. polyethylene terephthalate. The trigger-spray dispenser does not incorporate a propellant gas into the odor-absorbing composition, and preferably it does not include those that will foam the odor-absorbing composition. The trigger-spray dispenser herein is typically one which acts upon a discrete amount of the odor-absorbine 35 composition, itself, typically by means of a piston or a collapsing bellows that displaces the composinion through a nozile to create a spray of thin liquid. Said trigger-spray dispenser typically comprises a pump chamber having either a piston or bellows which =g -is movable throueh a Limited stroke response to the trieeer for varvne the volume ot~
said pump chamber This pump chamber or bellows chamber collects and holds the product for clispenstns: The tneger spray dispenser typically has an outlet checksaive for blocking communication and t7ow of fluid through the nozzle and is responsve to the pressure inside the chamber For the piston type trigger sprayers, as the triseer ~s compressed, it acts on the fluid in the chamber and the spring. increasing the pressure on the fluid. For the bellows spray dispenser, as the bellows is compressed.
the pressure increases on the fluid. The increase in fluid pressure in either trie~er spray dispenser acts to open the top outlet check valve The top valve allows the product to 10 be forced through the swirl chamber and out the nozzle to form a discharee pattern .fin adjustable nozzle cap can be used to vary the pattern of the fluid dispensed For the piston spray dispenser, as the trigger is released, the spring acts on the piston to return it to its original position. For the bellows spray dispenser, the bellows acts as the spring to return to its original position. This action causes a vacuum in the 1 ~ chamber Tree responding fluid acts to close the outlet valve while opening the inlet valve drawins; product up to the chamber from the reservoir .~ more complete disclosure of commercially available dispensing devices appears in U.S. Pat. Nos. 4,082,223, Nozawa, issued Apr. 4, 1978; 4,161, ''88.
McKinney, issued ful. 17, 1985; 4,434,917. Saito et al., issued Mar. 6, 1984:
and 20 4.819,835, Tasaki, issued Apr. I1, 1989; 5,303,867, Peterson, issued Apr 19, 1994.
A broad array of trigger sprayers or finger pump sprayers are suitable for use with the compositions of this invention. These are readily available from suppliers such as Calm,ar, Inc., City of Industry, California: CSI (Continental Sprayers. Inc ). St .5 Peters, Missouri; Berry Plastics Corp., Evansville. Indiana - a distributor of Guala~
sprayers: or Sieaquest dispensing, Cary, Illinois.
The preferred trigger sprayers are the blue inserted Cruala~ sprayer.
available from Berry Plastics Corp., or the Calmar TS800-lA sprayers, available from Calmar Inc., because of the fine uniform spray characteristics, spray volume, and pattern size 30 Arty suitable bottle or container can be used with the trigger sprayer, the preferred bottle is a 17 fl-oz. bottle (about 500 ml) of good ergonomics similar in shape to the Cinch bottle It can be made of any materials such as high density polyethylene.
polypropylene, polyvinyl chloride. polystyrene, polyethylene terephthalate.
glass, or any other material that forms bottles Preferably, it is made of high density 3 5 polyethylene ~~r clear polyethylene terephthalate.

WO 96f04938 219 7 4 4 2 p~~895/09178 For smaller four fl-oz. size (about I 18 ml), a finger pump can be used with canister or cylindrical bottle. The preferred pump for this application is the cylindrical Euromist II~ from Seaquest Dispensing.
s HI. METHOD OF USE
The composition herein can be used by distributing, e.g., by placing the aqueous solution into a dispensing means, preferably a spray dispenser and spraying an effective amount onto the desired surface or article. An effective amount as defined herein means an amount sufficient to reduce malodor impression to the point that it is not discernible by the human sense of smell yet not so much as to saturate or create a pool of liquid on said article or surface and so that when dry there is no visual deposit readily discernible. Distribution can be achieved by using a spray device, a roller, a pad, etc.
Preferably, the present invention does not encompass distributing the composition on to shiny surfaces including, e.g., chrome, glass, smooth vinyl, leather, shiny plastic, shiny wood, etc. It is preferable not to distribute the composition onto shiny surfaces because spotting and filming can more readily occur on the surfaces.
Furthermore, the composition is for use on inanimate surfaces, i.e., not for use on human skin, because it can cause skin irritation.
The present invention encompasses the method of spraying an effective amount of the composition of the present invention onto household surfaces.
Preferably said household surfaces are selected from the group consisting of countertops, cabinets, walls, floors, bathroom surfaces and kitchen surfaces.
The present invention encompasses the method of spraying a mist of an effective amount of the composition of the present invention onto fabric and/or fabric articles. Preferably, said fabric and/or fabric articles include, but are not limited to, clothes, curtains, drapes, upholstered furniture, carpeting, bed linens, bath linens, tablecloths, sleeping bags, tents, car interior, etc.
The present invention encompasses the method of spraying a mist of an effective amount of the composition of the present invention onto and into shoes wherein said shoes are not sprayed to saturation.
The present invention encompasses the method of spraying a mist of an effective amount of the composition of the present invention onto shower curtains.
The present invention relates to the method of spraying a mist of an effective amount of the composition of the present invention onto and/or into garbage cans and/or recycling bins.

WO 96104938 219 7 4 4 2 p~/US95/09178 The present invention relates to the method of spraying a mist of an effective amount of the composition of the present invention into the air to absorb malodor.
The present invention relates to the method of spraying a mist of an effective amount of the composition of the present invention into and/or onto major household appliances including but not limited to: refrigerators, freezers, washing machines, -automatic dryers, ovens, microwave ovens, dishwashers etc., to absorb malodor.
The present invention relates to the method of spraying a mist of an effective amount of the composition of the present invention onto cat litter, pet bedding and pet houses to absorb malodor.
The present invention relates to the method of spraying a mist of an effective amount of the composition of the present invention onto household pets to absorb malodor.
All percentages, ratios, and parts herein, in the Specification, Examples, and Claims are by weight and are approximations unless otherwise stated.
The following are non-limiting examples of the instant composition. Perfume compositions that are used herein are as follows:
~e $

Perfume Ingredients 'JYt% - Wt.%Wt.p 3,7-Dimethyl-6-octenol ~ 10 - 5 Benzyl salicylate 5 20 5 Benzyl acetate 10 15 5 Benzophenone 3 5 -Octahydro-3,6,8,8-tetramethyl-1H-3A,7-methanoazulen-2 - -6-0l 3-Methylene-7-methyl octan-7-of 10 - 5 Dihydro-nor-cyclopentadienyl acetate 5 - 5 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethyl-10 - -cyclopenta -gamma-2-benzopyrane Phenyl ethyl alcohol 15 10 20 3-Hydroxy-3,7-dimethyl-1,6-octadiene 4 - - S
acetate 3-Hydroxy-3,7-dimethyl-1,6-octadiene 6, 15 5 Methyl dihydro jasmonate 3 10 5 2-Methyl-3(para tert butylphenyl) propionaldehdye10 15 20 Phenyl ethyl acetate 2 5 1 4-Hydroxy-3-methoxybenzaldehyde _ _ 1 para-Menth-1-en-8-ol, para-menth-len-I-of 5 _ g Anisic aldehyde - _ 2 Coumarin _ _ _ 2-Methyl-3-(para iso propylphenyl)propionaldehyde - _ 3 Total Perfume Material Wt.% Wt.%

Amyl salicylate g _ Benzyl acetate g g Benzyl Salicylate - 2 Citronellol 7 27 Dihydromyrcenol 2 -Eugenol 4 _ Flor acetate g _ Galaxolide 1 _ Geraniol 5 -Hexyl cinnamic aldehyde 2 _ Hydroxycitronellal 3 _ Lilial 2 _ Linalool 12 13 Linalyl acetate 5 _ Lyral 3 _ Methyl dihydrojasmonate 3 _ Nerol 2 _ Phenoxy ethyl propionate _ 3 Phenylethyl acetate 5 17 Phenylethyl alcohol 8 17 alpha-Terpineol 5 13 alpha-Terpinene 5 _ Tetrahydromyrcenol 2 _ Total 219 7 4 4 2 PCTlUS95109178 _32_ Perfume E is composed of about 70%, by weight, of ingredients having a ClogP
of about 3 or smaller.
The following are non-limiting examples of the instant composition.
-ExamQle I Example II

r Tents - Wt.% Wt.%-~ ., _ . _ Methylated beta-cyclodextrin0.2 - ,-Hydroxypropyl beta-cyclodextrin- 0.2 NaHC03 1.0 1.0 Perfume A 0.02 -Perfume B - 0.02 Distilled water Balance Balance Exam les I and II _ p _. _.- ____-__ _ ___ __._.__ _._. --_..____ . .. _ . . .
The ingredients of Examples I and II are mixed and dissolved into clear solutions.
Exatnole III _. . Example IV

i nts Wt.% Wt.% _ _ . _ Methylated alpha-cyclodextrin0.1 -Methylated beta-cyclodextrin0.1 -Hydroxypropyl alpha-cyclodextrin- 0.11 Hydroxypropyl beta-cyclodextrin- 0.29 Propylene glycol - 0.025 KHCO3 2.0 L0 Perfume C 0.03 -Perfume D - 0.02 Distilled water Balance Balance Exam Ip a III _ The ingredients of Example III are mixed and dissolved into-clear solutions.
Exam Ie IV . __ . . _ _ The ingredients of Example IV are mixed and dissolved into clear solutions.
Hydroxypropyl alpha-cyclodextrin and hydroxypropyl beta-cyclodextrin are obtained as a mixture with an average degree of substitution of about 4.9, from the hydroxypolylation reaction of a mixture of alpha-cyclodextrin and beta-cyclodextrin.
Propylene glycol is a minor by-product (about 6%) of the same reaction.
Ex m 1 Exam 1~

- n r i nts Wt.% WI ~~0 Methylated beta-cyclodextrin 0.5 -Hydroxypropyl beta-cyclodextrin - 0.6 Hydroxypropyl gamma-cyclodextrin - 0.3 NaHC03 1.0 1.5 Perfume E 0.1 -Perfume E - 0.15 Distilled water Balance Balance Examtiles V and VI _ The ingredients of Examples V and VI are mixed and dissolved into clear solutions. In Example VI, the hydroxypropyl beta-cyclodextrin and hydroxypropyl gamma-cyclodextrin are obtained as a mixture with an average degree of substitution of about 3.8, from the hydroxypolylation reaction of a mixture of beta-cyclodextrin and gamma-cyclodextrin.
Exam I~ E~ple VnI

a i Wt.%/ _ Wt Methylated beta-cyclodextrin0.5 -Hydroxypropyl-beta-cyclodextrin- 0.5 NaHC03 L0 1.0 Perfume E 0.1 0.1 Kathon CG 0:0008 0.0008 Distilled water Balance Balance Examines VII and VIII
The ingredients of Examples VII and VIII are mixed and dissolved into clear solutions.
Example IX Exam lp a X
Ingredients Wt.% . . ._ Wt.%
Methylated beta-cyclodextrin 0.3 -Hydroxypropyl-beta-cyclodextrin - 0.3 NaHC03 1.0 I.0 Perfume D 0.03 0.03 34 _ Kathon CG - - 0.0008 0.0008 Surfynol 4651 0. I 0. I
Distilled water Balance Balance I Surfynol 465~ available from Air Products, has the general structure:
CH3 CH; ~H~ CH3 CH3-CH-CH= C-C C=CH=-CH-CH3 H2CHC0)sH (CH~CH=COSH
Examples IX and X , . . _ .. _ _ ._ t . _- . .. .--.. __: _. .
The ingredients of Examples IX and X are mixed and dissolved into clear solutions.
Exam les XI
p _.. ____ _. ... __._.___.___.___-.__.._ -_ _ The composition of Example IV is sprayed onto clothing using a blue inserted Guala~ trigger sprayer, available from Berry Plastics Corp. and allowed to evaporate off of the clothing.
ExamRIe XII _ The composition of Example VII is sprayed onto a kitchen countertop using C
Calmar TS 800-lA~, available from Calmar Inc., and wiped offwith a paper towel.
IS
Exam InaXIII
The composition of Example X is sprayed onto clothes using a cylindrical Euromist II~ pump sprayer available from Seaquest Dispensing, and allowed to evaporate off of the clothing.

Claims

What is claimed is:

1. An aqueous composition for reducing malodor impression on inanimate surfaces, comprising:
A. from about 0.1 % to about 20%, by weight of the composition, of solubilized, water-soluble alkali metal salt selected from the group consisting of carbonate salts, bicarbonate salts, and mixtures thereof;
B. from about 0.01 % to about 1 %, by weight of the composition, of perfume;
C. from about 0% to about 5%, by weight of the composition, of solubilized, water-soluble, cyclodextrin;
D. from about 0% to about 3%, by weight of the composition, of solubilizing aid; and E. aqueous carrier; and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition contains less than 5%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7.5 to about 10.5.

2. The composition of Claim 1 wherein said alkali metal salt is present at a level of from about 0.2% to about 10%, by weight of the composition, and wherein said perfume is present at a level of from about 0.015% to about 0.2%, by weight of the composition.

3. The composition of Claim 2 wherein said alkali metal salt is present at a level of from about 0.3% to about 7%, by weight of the composition, and wherein said perfume is present at a level of from about 0.01% to about 0.15%, by weight of the composition.

4. The composition of Claim 1 wherein said carbonate salt and bicarbonate salt are selected from the group consisting of sodium bicarbonate, potassium bicarbonate, potassium carbonate, sodium carbonate, and mixtures thereof.

5. The composition of Claim 4 wherein said alkali metal salt is sodium bicarbonate.

6. The composition of Claim 1 wherein said cyclodextrin is present at a level of from about 0.1% to about 5%, by weight of the composition, and wherein said solubilizing aid is present at a level of from about 0.05% to about 0.3%, by weight of the composition.

7. The composition of Claim 6 wherein said alkali metal salt is present at a level of from about 0.2% to about 10%, by weight of the composition and wherein said perfume is present at a level of from about 0.01% to about 0.5%, by weight of the composition.

8. The composition of Claim 7 wherein said alkali metal salt is present at a level of from about 0.3% to about 7%, by weight of the composition and wherein said perfume is present at a level of from about 0.015% to about 0.3%, by weight of the composition.

9. The composition of Claim 6 wherein said carbonate salt and said bicarbonate salt are selected from the group consisting of sodium bicarbonate, potassium bicarbonate, potassium carbonate, sodium carbonate, and mixtures thereof.

10. The composition of Claim 9 wherein said alkali metal salt is sodium bicarbonate.

11. The composition of Claim 6 wherein said solubilizing aid is present at a level of from about 0.05% to about 0.3%, by weight of the composition.

12. The composition of Claim 6 wherein said cyclodextrin is present at a level of from about 0.2% to about 4%, by weight of the composition.

13. The composition of Claim 12 wherein said cyclodextrin is present at a level of from about 0.3% to about 3%, by weight of the composition.

14. The composition of Claim 13 wherein said cyclodextrin solution is present at a level of from about 0.4% to about 2%, by weight of the composition.

l5. The composition of Claim 6 wherein said water-soluble cyclodextrin is selected from the group consisting of derivatised beta-cyclodextrins, alpha-cyclodextrin and its derivatives, gamma-cyclodextrin and its derivatives, and mixtures thereof.

16. The composition of Claim 15 wherein said cyclodextrin derivatives are selected from the group consisting of methyl substituted cyclodextrins, ethyl substituted cyclodextrins, hydroxyl alkyl substituted cyclodextrins, branched cyclodextrins, cationic cyclodextrins, quaternary ammonium cyclodextrins, anionic cyclodextrins, amphoteric cyclodextrins, cyclodextrins wherein at least one glucopyranose unit has a 3-6-anhydro-cyclomalto structure, and mixtures thereof.

17. The composition of Claim 15 wherein said cyclodextrin is selected from the group consisting of alpha-cyclodextrin, methylated alpha-cyclodextrin, methylated beta-cyclodextrin, hydroxyethyl alpha-cyclodextrin, hydroxyethyl beta-cyclodextrin, hydroxypropyl alpha-cyclodextrin, hydroxypropyl beta-cyclodextrin, and mixtures thereof.

18. The composition of any one of Claims 1-17 wherein said solubilizing aid is a low-foaming surfactant selected from the group consisting of nonionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, and mixtures thereof.

19. The composition of any one of Claims 1-18 additionally comprising an effective amount of solubilized, water-soluble, antimicrobial preservative having a water-solubility of greater than about 0.3% at room temperature.

20. The composition of any one of Claims 1-19 further comprising water-soluble polymers selected from the group consisting of cationic polymers, anionic polymers, and mixtures thereof.

21. The composition of any one of Claims 1-20 additionally comprising low molecular weight polyol selected from the group consisting of propylene glycol, ethylene glycol, glycerol, and mixtures thereof.

22. An aqueous composition for reducing malodor impression, for use on inanimate surfaces, comprising:
A. from about 0.3% to about 7%, by weight of the composition, of solubilized, NaHCO3;

B. from about 0.01% to about 0.5%, by weight of the composition, of perfume;
C. from about 0.1% to about 5%, by weight of the composition, of solubilized methylated beta-cyclodextrin;
D. aqueous carrier; and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition contains less than about 3%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7.5 to about 10.5.

23. An aqueous composition for reducing malodor impression, for use on inanimate surfaces, comprising:
A. from about 0.3% to about 7%, by weight of the composition, of solubilized, NaHCO3;
B. from about 0.01% to about 0.5%, by weight of the composition, of perfume;
C. from about 0.1 % to about 5%, by weight of the composition, of solubilized hydroxypropyl beta-cyclodextrin;
D. aqueous carrier; and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition contains less than about 1%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7.5 to about 10.5.

24. An aqueous composition for reducing malodor impression, for use on inanimate surfaces, comprising:
A. from about 0.3% to about 7%, by weight of the composition, of solubilized, KHCO3;
B. from about 0.01 % to about 0.5%, by weight of the composition, of perfume;
C. from about 0.1% to about 5%, by weight of the composition, of a mixture of solubilized methylated alpha-cyclodextrin and methylated beta-cyclodextrin;
D. aqueous carrier; and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition contains less than about 3%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7.5 to about 10.5.

25. An aqueous composition for reducing malodor impression, for use on inanimate surfaces, comprising:
A. from about 0.3% to about 7%, by weight of the composition, of solubilized, NaHCO3;
B. from about 0.01 % to about 0.5%, by weight of the composition, of perfume;
C. from about 0.1% to about 5%, by weight of the composition, of solubilized hydroxypropyl beta-cyclodextrin;
D. from about 0.0001% to about 0.5%, by weight of the composition of solubilized, water-soluble, antimicrobial preservative comprising a mixture of chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one;
E. from about 0.05% to about 0.3%, by weight of the composition, of low-foaming surfactant; and F. aqueous carrier; and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition comprises less than about 3%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7.5 to about 10.5.

26. The method of reducing malodor impression on inanimate surfaces, comprising, spraying the composition of any one of Claims 1-25 onto fabric with a trigger-spray device wherein the bottle comprises clear polyethyleneterephthalate.

27. An aqueous composition for reducing malodor impression on inanimate surfaces, comprising:
A. from about 0.1 % to about 20%, by weight of the composition, of solubilized, water-soluble alkali metal salt selected from the group consisting of carbonate salts, bicarbonate salts, and mixtures thereof;
B. from about 0.0005% to about 1 %, by weight of the composition, of perfume;
C. from about 0% to about 5%, by weight of the composition, of solubilized, water-soluble, cyclodextrin;
D. from about 0% to about 3%, by weight of the composition, of solubilizing aid; and E. aqueous carrier; and wherein said composition is essentially free of any material that would soil or stain fabric, wherein said composition contains less than 5%, by weight of the composition, of low molecular weight monohydric alcohol, and wherein the pH of said composition is from about 7.5 to about 10.5.

28. The composition of Claim 27 wherein said perfume is present at a level of from about 0.0005% to about 0.2%, by weight of the composition.

29. The composition of Claim 28 wherein said perfume is present at a level of from about 0.0005% to about 0.15%, by weight of the composition.

30. The composition of Claim 27 wherein said perfume is present at a level of from about 0.005% to about 1%, by weight of the composition.