CA2589408A1 - Water-soluble film article having salt layer, and method of making the same - Google Patents

Water-soluble film article having salt layer, and method of making the same Download PDF

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Publication number
CA2589408A1
CA2589408A1 CA002589408A CA2589408A CA2589408A1 CA 2589408 A1 CA2589408 A1 CA 2589408A1 CA 002589408 A CA002589408 A CA 002589408A CA 2589408 A CA2589408 A CA 2589408A CA 2589408 A1 CA2589408 A1 CA 2589408A1
Authority
CA
Canada
Prior art keywords
article
salt
layer
binder
aqueous solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002589408A
Other languages
French (fr)
Other versions
CA2589408C (en
Inventor
Andrew P. Verrall
Steven G. Friedrich
Frank W. Denome
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monosol LLC
Original Assignee
Monosol, Llc
Andrew P. Verrall
Steven G. Friedrich
Frank W. Denome
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Monosol, Llc, Andrew P. Verrall, Steven G. Friedrich, Frank W. Denome filed Critical Monosol, Llc
Publication of CA2589408A1 publication Critical patent/CA2589408A1/en
Application granted granted Critical
Publication of CA2589408C publication Critical patent/CA2589408C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/052—Forming heat-sealable coatings
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C11D17/042—Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions
    • C11D17/043—Liquid or thixotropic (gel) compositions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

Water-soluble articles such as films, which can be made resistant to contact with small amounts of water, and methods of making the same are disclosed. The water-soluble article is formed from a water-soluble film-forming composition, such as polyvinyl alcohol, and includes a salt that is distributed more closely to at least one of the surfaces than throughout its thickness.

Claims (32)

1. An article, comprising:
a water-soluble film, comprising a first layer comprising a water-soluble polymer comprising one or both of PVOH and a PVOH copolymer, and a second layer comprising a salt, the salt layer bound to the first layer with a binder comprising carboxymethyl cellulose.
2. The article of claim 1, wherein the water-soluble polymer consists essentially of one or both of PVOH and a PVOH copolymer.
3. The article of any one of the preceding claims, wherein the binder consists essentially of carboxymethyl cellulose.
4. The article of any one of the preceding claims, wherein the binder comprises 40 wt.% or less of the second layer.
5. The article of any one of the preceding claims, wherein the carboxymethyl cellulose has a degree of substitution of greater than 0.4.
6. The article of claim 5, wherein the carboxymethyl cellulose has a degree of substitution of about 1.2.
7. The article of any one of the preceding claims, wherein the carboxymethyl cellulose is characterized by a viscosity of a 2 wt.% solution at 25 °C
of 15,000 or less.
8. The article of claim 7, wherein the carboxymethyl cellulose is characterized by a viscosity of a 2 wt.% solution at 25 °C of 2,000 or less.
9. The article of any one of the preceding claims, wherein said salt comprises a cation selected from the group consisting of aluminum, ammonium, antimony, barium, bismuth, cadmium, calcium, cesium, copper, iron, lithium, magnesium, nickel, potassium, rubidium, silver, sodium, strontium, zinc, zirconium, and combinations thereof, with an anion selected from the group consisting of acetate, aluminum sulfate, azide, bicarbonate, bisulfite, borohydride, borooxalate, bromate, bromide, carbonate, chloride, chlorite, chromate, cyanate, cyanide, dichromate, disilicate, dithionate, ferricyanide, ferrocyanate, ferrocyanide, fluoride, fluoroantimonate, fluoroborate, fluorophosphate, fluorosulfonate, flurosilicate, hydrogen carbonate, hydrogen sulfate, hydrogen sulfite, hydrogencyanide, hydrogenophosphate, hydrogensulfate, hydrosulfite, hydroxide, hydroxostannate, hypochlorite, hyponitrite, hypophosphite, iodate, iodide, manganate, meta-aluminate, metaborate, metaperiodate, metasilicate, mixed halides, molybdate, nitrate, nitrite, orthophosphate, orthophosphite, orthosilicate, oxalate, oxalatoferrate, oxide, perborate, perchlorate, permanganate, peroxide, peroxydisulfate, phosphate, polybromide, polychloride, polyfluoride, polyiodide, polyphosphate, polysulfide, pyrosulfate, pyrosulfite, sesqui-carbonate, silicate, stannate, sulfamate, sulfate, sulfide, sulfite, thiocyanaate, thiosulfate, and combinations thereof; and combinations of any of the foregoing.
10. The article of claim 9, wherein the salt is selected from the group consisting of ammonium sulfate, potassium citrate, sodium sulfate, sodium citrate, sodium tripolyphosphate, zinc sulfate, and combinations thereof.
11. The article of claim 10, wherein the salt comprises sodium sulfate.
12. The article of any one of the preceding claims, wherein the second layer comprises salt crystals with a maximum size of about 1 µm.
13. The article of any one of the preceding claims, further comprising a surfactant in one or both of the first and second layers.
14. The article of claim 13, wherein the surfactant comprises a nonionic surfactant.
15. The article of claim 14, wherein the surfactant comprises a difunctional block copolymer comprising poly(ethylene oxide) and poly(propylene oxide) blocks and terminating in primary hydroxyl groups.
16. The article of any one of the preceding claims, further comprising a plasticizer in the first layer.
17. The article of claim 16, wherein the plasticizer is selected from the group consisting of: glycerin, diglycerin, hydroxypropyl glycerine, sorbitol, ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, polyethylene glycols, neopentyl glycol, trimethylolpropane, polyether polyols, ethanolamines, and combinations thereof.
18. The article of any one of the preceding claims, in the form of a sealed packet wherein the second layer is disposed as an outer surface of the packet.
19. A method of making a film, comprising the steps of:
providing a water-soluble film substrate comprising a water-soluble polymer comprising one or both of PVOH and a PVOH copolymer;
forming a layer comprising a salt and a binder comprising carboxymethyl cellulose from an aqueous solution comprising the salt and the binder; and binding the substrate and the layer comprising the salt to each other with the binder.
20. The method of claim 19, wherein the binding step comprises applying the aqueous solution to the substrate.
21. The method of claim 19, wherein the aqueous solution comprising the salt and the binder comprises 40 wt.% or less of the salt.
22. The method of claim 21, wherein the aqueous solution comprising the salt and the binder comprises at least 5 wt.% of the salt.
23. The method of any one of claims 19 to 22, wherein the aqueous solution comprising the salt and the binder comprises about 0.1 wt.% to about 5 wt.%
binder.
24. The method of claim 23, wherein the aqueous solution comprising the salt and the binder comprises about 0.1 wt.% to about 5 wt.% carboxymethyl cellulose.
25. The method of claim 20, wherein the aqueous solution further comprises a surfactant.
26. The method of claim 25, wherein the surfactant comprises a nonionic surfactant
27. The method of claim 26, wherein the surfactant comprises a difunctional block copolymer comprising poly(ethylene oxide) and poly(propylene oxide) blocks and terminating in primary hydroxyl groups.
28. The method of any one of claims 25 to 27, wherein the surfactant is present in an amount in a range of 0.05 wt.% to 0.3 wt.%.
29. The method of any one of claims 19 to 28, wherein the aqueous solution further comprises a slow-drying liquid.
30. The method of claim 29, wherein the slow-drying liquid is selected from the group consisting of glycols, polyols, glycol ethers, polyol ethers, and combinations thereof.
31. The method of any one of claims 19 to 27,wherein the substrate further comprises a plasticizer.
32. The method of any one of claims 19 to 31, further comprising the step of forming comprising the bound substrate and layer comprising a salt a sealed packet wherein the layer comprising a salt is disposed as an outer surface of the packet.
CA2589408A 2005-01-22 2006-01-20 Water-soluble film article having salt layer, and method of making the same Expired - Fee Related CA2589408C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US64645405P 2005-01-22 2005-01-22
US64643205P 2005-01-22 2005-01-22
US60/646,454 2005-01-22
US60/646,432 2005-01-22
US11/205,377 US8728449B2 (en) 2005-01-22 2005-08-17 Water-soluble film article having salt layer, and method of making the same
US11/205,377 2005-08-17
PCT/US2006/001943 WO2006078844A1 (en) 2005-01-22 2006-01-20 Water-soluble film article having salt layer, and method of making the same

Publications (2)

Publication Number Publication Date
CA2589408A1 true CA2589408A1 (en) 2006-07-27
CA2589408C CA2589408C (en) 2010-08-17

Family

ID=36218490

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2589408A Expired - Fee Related CA2589408C (en) 2005-01-22 2006-01-20 Water-soluble film article having salt layer, and method of making the same

Country Status (11)

Country Link
US (1) US8728449B2 (en)
EP (1) EP1846482B1 (en)
JP (2) JP4902551B2 (en)
AT (1) ATE401367T1 (en)
AU (1) AU2006206456B2 (en)
CA (1) CA2589408C (en)
DE (1) DE602006001850D1 (en)
ES (1) ES2308733T3 (en)
HK (1) HK1113383A1 (en)
PL (1) PL1846482T3 (en)
WO (1) WO2006078844A1 (en)

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US10829621B2 (en) 2013-01-11 2020-11-10 Monosol, Llc Edible water-soluble film
US11945936B2 (en) 2013-01-11 2024-04-02 Monosol, Llc Edible water-soluble film

Also Published As

Publication number Publication date
JP2008528320A (en) 2008-07-31
JP4902551B2 (en) 2012-03-21
ES2308733T3 (en) 2008-12-01
US8728449B2 (en) 2014-05-20
EP1846482B1 (en) 2008-07-16
CA2589408C (en) 2010-08-17
PL1846482T3 (en) 2009-01-30
JP5457403B2 (en) 2014-04-02
HK1113383A1 (en) 2008-10-03
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