CA2067460C - Treating material for animal excretions and method of producing the same - Google Patents
Treating material for animal excretions and method of producing the same Download PDFInfo
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- CA2067460C CA2067460C CA002067460A CA2067460A CA2067460C CA 2067460 C CA2067460 C CA 2067460C CA 002067460 A CA002067460 A CA 002067460A CA 2067460 A CA2067460 A CA 2067460A CA 2067460 C CA2067460 C CA 2067460C
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- water
- agglomerates
- treating
- base material
- absorbent resin
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0154—Litter comprising inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/015—Floor coverings, e.g. bedding-down sheets ; Stable floors
- A01K1/0152—Litter
- A01K1/0155—Litter comprising organic material
Abstract
The invention relates to a treating material for animal excretions comprising agglomerates of a powdery or short-fiber-like excretion treating base material and fine powder of water-absorbent resin sprinkled on the agglomerates, and also to a method of producing a treating material for animal excretions which comprises forming agglomerates from a powdery or short-fiber-like excretion base treating material using water and then, sprinkling fine powder of a water-absorbent resin on the agglomerates. The treating material for animal excretions according to the invention can quickly absorb moisture, and its surface is brought to a half dry condition soon after it absorbs urine. Thus, it is possible to prevent urine from being attached to the pet's fur and paw, and contaminating the room or the like. Further, by absorbing urine, the treating material becomes a rubber-like mass.
Thus, only its portion having absorbed urine can be easily taken out and disposed. It is thus useful for treating excretions of pots or like animals.
Thus, only its portion having absorbed urine can be easily taken out and disposed. It is thus useful for treating excretions of pots or like animals.
Description
TREATING MATERIAL FOR ANIMAL EXCRETIONS
AND METHOD OF PRODUCING TIIE SAME;
BACKGROUND OF THE INVENTION
FIELD OF 'i'HE INVENTION
The present invention relates to treating material for excretions of animals such as pets etc. and a method of producing th.e same. More particularly, the invention concerns a treating material which permits treatment of excretions of animals such as cats and dogs conveniently and efficiently, and a method of producing the same.
DESCRIPTION OF THE PRIOR ART
Recently, there are increasing cases of cats, dogs and other home pets being kept as if family members, and 'the treatment of pet's excretions is often a great burden for the family. As well-known treating material for pet excretions, there are 'those which are agglomerates of a mixture of particular proportions of inorganic particles such as zeolit a particles etc., a water-absorbent resin ' and water, as disclosed in, for instance, Japanese Patent Application Laid-Open No. 108927/1989, and those which are obtained by drying agglomerates of a mixture of paper production residue, water-absorbent resin and water-soluble inorganic salt, as disclosed in, for instance, Japanese Patent Application Laid-Open No. 25629/1984.
However, the treating materials obtained by agglomerating a mixture of inorganic particles etc. or paper production residue and water-absorbent resin, have the following problems. (1) Because of a small moisture absorbing rate, unabsorbed urine remaining on the surface is attached to the fur and paw of the pet and makes the room dirty. (2) Since there is insufficient adhesion between the agglomerates which have absorbed urine, they fail to form a lump as a whole. Instead, they are present separately. Therefore, the removal of the agglomerates which absorbed the urine takes time. (3) The agglomerates having absorbed urine are great in number, thus increasing the amount of material used and disposed of.
SUMMARY OF THE INVENTION
The inventors have conducted extensive researches and investigations in order to provide a treating material for excretions of animals such as pets etc. and a method of producing the same, which can solve the above problems and, as a result, they completed the present invention.
AND METHOD OF PRODUCING TIIE SAME;
BACKGROUND OF THE INVENTION
FIELD OF 'i'HE INVENTION
The present invention relates to treating material for excretions of animals such as pets etc. and a method of producing th.e same. More particularly, the invention concerns a treating material which permits treatment of excretions of animals such as cats and dogs conveniently and efficiently, and a method of producing the same.
DESCRIPTION OF THE PRIOR ART
Recently, there are increasing cases of cats, dogs and other home pets being kept as if family members, and 'the treatment of pet's excretions is often a great burden for the family. As well-known treating material for pet excretions, there are 'those which are agglomerates of a mixture of particular proportions of inorganic particles such as zeolit a particles etc., a water-absorbent resin ' and water, as disclosed in, for instance, Japanese Patent Application Laid-Open No. 108927/1989, and those which are obtained by drying agglomerates of a mixture of paper production residue, water-absorbent resin and water-soluble inorganic salt, as disclosed in, for instance, Japanese Patent Application Laid-Open No. 25629/1984.
However, the treating materials obtained by agglomerating a mixture of inorganic particles etc. or paper production residue and water-absorbent resin, have the following problems. (1) Because of a small moisture absorbing rate, unabsorbed urine remaining on the surface is attached to the fur and paw of the pet and makes the room dirty. (2) Since there is insufficient adhesion between the agglomerates which have absorbed urine, they fail to form a lump as a whole. Instead, they are present separately. Therefore, the removal of the agglomerates which absorbed the urine takes time. (3) The agglomerates having absorbed urine are great in number, thus increasing the amount of material used and disposed of.
SUMMARY OF THE INVENTION
The inventors have conducted extensive researches and investigations in order to provide a treating material for excretions of animals such as pets etc. and a method of producing the same, which can solve the above problems and, as a result, they completed the present invention.
According to the invention, there is provided a treating material for animal excretions, which comprises agglomerates of a powdery or short-fiber-like excretion treating base material and- fine powder of water-absorbent resin sprinkled on the agglomerates.
According to -the invention, there is also provided a method of producing a treating material for animal excre-lions which comprises forming agglomerates from a powdery or short-fiber-like excretion treating material using water and then sprinkling fine powder of a water-absorbent resin on the agglomerates.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a sectional view showing an embodiment of the treating material according to the invention.
Figure 2 is a sectional view showing an embodiment of a simplified toilet for pets using the treating material according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
According to the invention, as the water-absorbent resin may be used 0 those obtainable by polymerizing, (a) starch or cellulose, (b) a water-soluble monomer having a hydrophilic group such as carboxyl group and sulfonic acid group and/or a monomer capable of becoming water-soluble through hydrolysis and (c) a crosslinking agent and subsequently carrying out, if necessary, hydrolysis.
Details of the components (a), (b) and (c) used for producing the water-absorbent resins noted above and the proportions of the components (a), (b) and (c), method of production and specific examples of the water-absorbent _ ~ -~~~~~~f~
resins, are described in Japanese Patent Application baid-Open No. 25886/1977 and Japanese Patent Publication No.
46199/1978, No. 46200/1978 and No. 21041/1980.
Examples of the water-absorbent resin other than those noted above, are ~ those obtainable by polymerizing the components (a) and (b) (e. g., hydrolyzed product of starch-acrylonitrile graft copolymer or hydrolyzed product of cellulose-acrylonitrile graft copolymer), ~ crosslinked material of (a) (e. g., crosslinked carboxymethylcellulose), ~ copolymer of the components (b) and (c) (e. g., partially hydrolyzed product of crosslinked polyacrylamide, crosslinked acrylic acid-acrylamide copolymer, crosslinked sulfonated polystyrene, saponified vinylester-unsaturated carboxylic acid copolymer, crosslinked polyacrylic acid or salts thereof, crosslinked acrylic acid--acrylic acid ester copolymer, crosslinked isobutylene-malefic acid anhydride copolymer and crosslinked carboxylic acid denaturated polyvinyl alcohol) and ~ self-crosslinking polymerization product of the component (b) (e. g., self-crosslinkable polyacrylic acid salts). These water-absorbent resins may be used alone or in combinations of two or more of them.
Among the above examples of these water-absorbent resins, ~ and some of ~ such as partially hydrolyzed product of crosslinked polyacrylamide, crosslinked acrylic acid-acrylamide copolymer, crosslinked polyacrylic acid or salts thereof (e. g., alkali metal salts, ammonium salts, etc.), crosslinked acrylic acid-acrylic acid ester copolymer, crosslinked isobutylene-malefic acid anhydride copolymer and crosslinked carboxylic acid denaturated polyvinyl alcohol are preferable.
The preferable water-absorbent resins in the above are those having a water absorption capacity with respect to pure water of at least 50 ml/g, preferably 100 to 1,000, ml/g. The particle size of 'the fine powder of water-absorbent resin is 1 to 840 microns, preferably 5 to 200 microns.
Examples of the excretion treating base material according to the invention are inorganic powder, e.g., kaolin, bent unite, silica sand, shirasu balloon, diatomaceous earth, clay, zeolite, fly ash, etc.; natural fibers, e.g., pulp, straw, grass peat, peat-moss, etc., organic short fibers, e.g., such synthetic fibers as rayon, polyester and polyamide cwt short; sawdust, and cellulosic pulverized product of paper (such as newspapers, cardboards, magazines, etc.) and the like.
These inorganic powder and cellulosic pulverized products usually have a particle diameter (or length of major axis) ranging from 1 to 800 microns, preferably 5 to 200 microns. The length of the organic short fibers is usually 0.001 to 20 mm, preferably 0.01 to 10 mm. These excretion treating base materials may be used alone or in combination of two or more of them.
The agglomerates of the excretion treating base materials may be produced ~ by adding a small quantity of water as binder while mechanically stirring the material or ~ by a compression molding process for agglomeration.
1o As a specific example of the process ~, the excretion treating base material (hereinafter referred to as base material) is put into a mixer, e.g., Nauta*mixer, a ribbon blending mixer, a conical blender, a mortar mixer, a universal mixer, etc., and adding a small quantity of water as uniformly as possible while stirring them. In this way, agglomerates can be readily obtained.
As a method for adding water, there is, for instance, spraying water on the base material, blowing steam to the base material, or holding the base material under a high 20 relative humidity condition to cause it to absorb moisture. As the binder for agglomerating the base material, usually water is used. For the purpose of a binding effect or an effect of improving the water permeability of the agglomerates of the base material, it *Trade-mark is possible, if necessary, to add inorganic salts, alcohols, ethylene glycol, glycerin, polyethylene glycol, polyvinyl alcohol, a surface active agents, and so forth to water.
The amount of water -to be added varies depending on the kind of the base material. Usually it is 1 to 100 preferably 2 to 50 ~ by weight of the weight of the base material. Adding. excessive water results in soft agglomerates, which may collapsed or stick to one another.
In this case, there is no problem if the agglomerates are then dried. However, upon such adding of excess water, drying the agglomerates again after the agglomeration is required, and thus the method is uneconomical. That is, it is preferred to carry out agglomeration with addition of an adequate quantity of water, which does not require re-drying. If quantity of added water is insufficien-t, on the other hand, sufficient agglomeration can not be obtained.
Further, by carrying out -the agglomeration in a heated state at 40 to 90 °C, it is possible to increase the agglomeration speed and mechanical strength of agglomerates and permit efficient agglomeration.
As a specific example of the process ~ mentioned previously, the base material is press molded into pellets in a mold having adequate shape and size. As another example, the base material is press molded into the form of sheet, rod or block, which is then cut or pulverized to an adequate size. In the above processes, pressure is applied usually under the room temperature. However, it is possible to apply pressure at an elevated temperature (for instance 30 to 300 °C) or under an elevated relative humidity (for instance 2 to 100 %).
The pressure in the press molding may be suitably selected depending on the kind, grain size and character of the base material. Usually, it is 1 to 3,000 kg/cmz , preferably 10 to 2,000 kg/cm2 . The press molding may be carried out by using a roller type compression molding machine (e. g., a compacting press machine, a bricketting press machine, etc.), a piston type press molding machine, a screw type press extruder, a filter plate extruder and so forth. The press molded product obtained in the above way may be cut or pulverized to obtain agglomerates having adequate shape and size if necessary.
According to the invention, the agglomerates may have any shape, for instance, spherical, cylindrical, plate-like, roclc-like, rectangular, conical, pyramidal, rod-like and so forth. In -any shape, their size is preferably 0.1 to 20 mm, more preferably 0.5 to 10 mm, in the maximum diameter.
The fine powder of. water-absorbent resin is sprinkled on the agglomerates, thus obtaining -the excretion treating material according to the invention.
The fine powder of water-abso-rbent resin is added usually in an amount of 1 to 50 ~, preferably 3 to 30 ~, by caeight of the agglomerate. If 'the amount is less than 1 ~ by weight, the speed of absorbing pet's urine is reduced. An amount in excess of 50 i by weight is uneconomical.
As for the size of the excretion treating material obtainable in the above way according to the invention, the material has the maximum diameter of 0.5 -to 50 mm preferably, and of 1.0 to 20 mm more preferably. ~Iith -the size in this range, it is preferable that -the material having absorbed a great quantity of urine or the like does not become paste- or liquid-like as a whole but can be suitably handled as solid.
According to the invention, the fine powder of water-absorbent resin can be readily sprinkled on the agglomerates (i.e., attached or adhered to the agglomerate surface) by mechanically blending the agglomerates and fine powder of water-absorbent resin. A small quanatity of water present on the agglomerate surface serves as a binder, and -the fine powder of the water-absorbent resin is bonded on the agglomerate surface. However, if the quantity of water on -the agglomerate surrace is insufficient, sufficient bonding can not be obtained. If the quantity of the water is excessive, on -the other hand, water-absorbent resin powders bonded to the agglomerates surface become gel-like, and their adhesion is reduced.
The adequate quantity of water varies depending on the kind and characteristics of the base material, shape and grain size of the agglomerates, kind and characteristics of the water-absorbent resin and so forth. Usually, it is 1 to 100 ~, preferably 2 to 50 9~, by weight.
The fine powder of water-absorbent resin may be sprinkled on the agglomerates immediately after completion of the agglomeration process in -the same agglomeration equipment by adding the fine powder of water-absorbent resin. Alternatively, the agglomerates formed may be shifted -to a separate container and then subjected to the sprinkling of the fine powder of water-absorbent resin.
The excretion treating material according -to the invention may contain 0.01 to 10 ~ by weight of each of such add hives as deodorizer, perfume, sterilizer, moldproofing agent, antiseptic agemt, antiblocking agent, surface active agent, silvervine to cat or a similar favored material by the pet and volume extending :Filler.
These additives may be added at any time so long as they a-re present in -the excretion treating material according to the invention. For example, they may be added to -the base material or agglomerates thereof or the fine powder of water-absorbent resin, or they may be added during ar after the step of sprinkling the fine powder of water-absorbent resin on the agglomerates.
The excretion treating material according to -the invention may be used in the form of a simplified toilet by laying it in the container. When a cat, a dog or like animal discharges excretions in such a simplified -toilet, the material quickly absorbs the moistures of the excretions, and agglomerates having absorbed the moisture stick together into a rubber-like lump. Thus, this lump portion can be readily picked up, which is convenient for disposal.
The excretion -treating material according to -the invention is illustrated refering to 'the drawings. Figure 1 is a sectional view showing an embodiment of -the treating material according to the invention. Designated at 1 is the agglomerate of the base materials and at 2 is the water-absorbent resin. Figure 2 is a sectional view showing an embodiment of simplified toilet using the treating material according to the invention. Designated at 3 is the treatment material according to the invention, and at 4 is a container.
EXAMPLES
The invention will now be illustrated with reference to following examples that by no means limit the scope of the invention.
Example 1 and Comparative Example 1 500 g of "Kunigel V-1"* commercially available bentonite manufactured by Kunimine Ind. Co., was put into 1o a 2-liter small size universal blending mixer externally held at about 50 °C, and 50 ml of water heated to about 50 °C was added gradually while stirring at 100 rpm to agglomerate. The stirring was continued until hard agglomerates with the maximum diameter of about 2 to 6 mm were produced. A predetermined quantity of "SANWET IM-1000MPS"* fine powder of a graft starch type water-absorbent resin manufactured by Sanyo Chemical Industries, Ltd., with an average particle size of 30 ~ m and a water absorption capacity of 1,000 ml/g., was added to these 2o agglomerates and sprinkled on the agglomerate surface by stirring again at 100 rpm to obtain an excretion treating material according to the invention. The obtained material had a maximum diameter of 2 to 10 mm.
400 g of this treating material was taken in a 1-*Trade-mark liter beaker, and its surface was leveled. 30 cc of artificial urine was charged into a 50-cc disposable syringe (manufactured by Termo Co., Ltd.) and was discharged vertically toward the center of the surface of the material in the beaker from a height of about 2 cm in seconds. The absorbing rate of the artificial urine Was measured. Five minutes after the dischaging of the artificial urine, the part of the treating material lumped from absorption of the urine was taken out using 'tweezers, and the adhesion of the lump and the weight of the wetted portion (the less the better) were measured. The results of measurement are shown in Table 1.
As comparative examples, the agglomerates without sprinkled water-absorbent resin, and the agglomerates obtained by uniformly blending bentonite and wthe water-absorbent resin and carrying out agglomeration in the same method and with the same apparatus as in Example 1 (i.e., the water-absorbent resin was not sprinkled on the surface of the agglomerates but uniformly dispersed in the agglomerates), were subjected to 'the urine absorption test. The results are also shown in Table 1.
Example 2 The same tests as in Example 1 were conducted except for using different base materials and water-absorbent resins. In any test, the fine powder of water-absorbent resin was added in the amount of 10 °6 by weight of the agglomerates. The results are shown in Table 2.
The maximum diameter of the agglomerates obtained was 0.5 to 5 mm. As for the size of the obtained treating material, the maximum diameter was 3 to 15 mm.
Example 3 and Comparative Example 3 Various organic short fibers (fiber length: 0.1 to mm, moisture content: 5 to 15 % by weight) and cellulosic pulverized materials (particle size: 0.1 to 5 mm, moisture content: 5 to 15 ~ by weight) were pressed with a linear pressure of 500 kg/cm using a roller type compression molding machine to obtain a plate with a thickness of 5 mm, which was 'then cu-t using a cutter to obtain agglomerates (pressed pellets) with a agglomerate size of about 5 mm.
~ by weight of "SANWET IM-1000 MPS", fine powder of starch graft type water-absorbent resin (average particle size: 30 a m, water absorption capacity: 1,000 ml/g) manufactured by Sanyo Chemical Tndustries, Ltd., was added to these agglomerates and was sprinkled on the agglomerate surface by stirring at 100 rpm to obtain an excretion treating material according to the invention.
200 g of this treating material was then taken in - ~. 5 -a 1-liter beaker, and its surface was leveled. 'then, 30 cc of an artificial urine was taken in a 50-cc disposable syringe (manufactured by Termo Co., Ltd.) and discharged vertically toward the center of the surface of the material in the beaker from a height of about 2 cm in 5 seconds. The absorbing r ate of the artificial urine was measured. After 5 minutes from the dischrging of the artificial urine, the part of the treating material lumped from absorption of the urine was taken out using tweezers, and the adhesion of the lump and weight of 'the wetted portion (the lower the better) were measured. The results are shown in Table 3.
As comparative examples, the agglomerates without sprinkled water-absorbent resin, and the agglomerates obtained by uniformly blending bentonite and the wa-ter-absorbent resin and carrying out agglomeration in the same method and with the same apparatus as in Example 3 (i.e., the water-absorbent resin was not sprinkled on the surface of the agglomerates but uniformly disparsed in the agglomerates), were subjected to the urine absorption test. The results are also shown in Table 3.
'Tab 1 a 1 "SANWET M-1000MPS"Results urine absorption test I of Dosage Addition Rate of Adhesion Weight *2 of (wt ~) method water avatar No. absor- absorbed tion part (g) (sac.) *1 E xample 1-1 5 Sprinkled 5.7 Excellent 58.1 1-2 10 on the 4.3 Excellent 52.9 sur-1-3 20 face of 3.7 Excellent 50.6 1-4 30 agglomerates3.5 Excellent 49.7 Comparative xample 1-5 Uniformly 80.5 Inferior 102.5 1-6 added in 20.2 Inferior 88.2 1-7 the 17.5 Inferior 81.4 1-8 agglomerates15.?. Passablo 77.4 1-9 15.0 Passable 66.0 (Note) *1: Time (sec.) from ttxe end of sprinkling of the artificial urine, to the water on tho surface of the treating material being absorbed substantially.
*2: Adhesion of the water absorbed part.
Excellent: Water-absorbed agglomerates are firmly adhered with each other to form a rubber-line lump.
Passable: 50 to 70 s~ of hater-absorbed agglomerates are forming a lump.
Inferior: Less than 50 ~ of water-absorbed agglomerates are forming a lump.
Table 2 Results of urine absorption test Main Kind of Rate Adhe- Weight of of component water- water sion water No. of base absorbentabsorp- absorbed material resin tion part (g) powder *3 *4 (sec.) 2-1 Bentonite Polymer 4.3 EXS *5 52.9 A
2-2 Silica sand Polymer 6.2 EXS 63.1 A
2-3 Kaolinite Polymer 6.4 EXS 63.5 A
a. 2-4 Zeoiite Polymer 6.6 EXS 64.9 A
2-5 Bentonite Pol ymer B 4.9 EXS 55.1 w 2-6 Hentonite Polymer 5.2 EXS 56.9 C
2-7 Bentonite Polymer 5.5 EXS 57.5 D
(Note) *3: Particle distribution of the base material powder: The particle size was 5 to 150 ~ m in any sample.
*4: Kind of water-absarbent resin (main component) Polymer A --- "SANWET IM-1000MPS", a trade name by Sanyo Chemical _. Industries, ltd. of a starch/sodium acrylate graft ..
_.. polymer type water-absorbent resin (average particle size: 30 ~ m, water absorption capacity:
1,000 m1/g) Polymer B --- "SANWET I~1-5000MPS", a trade name by Sanyo Chemical Industries, Ltd. of a sodium poly-acrylate 'type water-absorbent resin (average particle size: 25 a m, water absorption capacity: 450 ml/g) Polymer C --- Polyvinyl alcohol/sodium polyacrylate type water-absorbent resin (average grain size: 30 ~ m, water absorption capacity: 350 ml/g) Polymer D --- Isobytylene/sodium maleate copolymer type water-absorbent resin (average grain size: 30 a m, water absorption capacity: 400 ml/g) The fine powder of water-absorbent resin in any sample was added by ZO ~ by weight of agglomerates.
*5: "EXS " means "Excellent "
Table Results f urine ption test o absor Main com- Addition Rate of Adhe- Weight of No. ponent of method water sion portion of agglome- water- absorp- *2 with ab-rates absorbent tion sorption resin (sec.) (g) *1 Example3 3-1 Pulp Sprinkled 6.2 EXS *3 39.1 3-2 Pulp of on the 6.8 EXS 39.5 used surface newspaper of 3-3 Peat-moss agglo- 7.9 EXS 42.6 3-4 Sawdust merates 8.3 EXS 44.0 Comparative Example 3-5 Pulp Uniformly 19.1 Passable43.7 3-6 Pulp of added in 21.3 Passable45.5 used the newspaper agglo-3-7 Peat-moss merates 22.2 Passable47.3 3-8 Sawdust 23.9 Passable49.4 3-9 Pulp Not added 88.3 Inferior65.0 2~,~'~~~~~~
(Note) *1: Time (sec.) from the end of sprinkling of the artificial urine, to 'the water on the surface o:E the treating material being absorbed substantially.
*2: Adhesion of the water absorbed part.
Excellent: Water-absorbed agglomerates are firmly adhered with each other to form a rubber-like lump.
Passable: 50 to '~0 ~ of Water-absorbed agglomerates are forming a lump.
Inferior: Less than 50 ~ of water-absorbed agglomerates are forming a lump.
*3: "EXS " means "Excellent "
~~~~~w~~
The treating material for animal excretions and the method of producing 'the same of the invention have the following excellent effects.
(1) The material can quickly absorb moisture, and its surface soon attains a half dry state. Thus, i~t can prevent contamination the room etc., from attaching of urine to the fur and paw of animals such as pets etc.
(2) The water-absorbent resin absorbs moisture not by physical absorption such as capillary phenomenon but by chemical absorption. Thus, moisture once absorbed is not released when an external pressure is applied.
(3) Agglomerates of the treating material can firmly adhere to each other to form a rubber-like lump when they absorb moisture. Thus only the part -that has absorbed moisture can be readily taken out and disposed of .
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a sectional view showing an embodiment of the treating material according to the invention.
Figure 2 is a sectional view showing an embodiment of a simplified toilet for pets using the treating material according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
According to the invention, as the water-absorbent resin may be used 0 those obtainable by polymerizing, (a) starch or cellulose, (b) a water-soluble monomer having a hydrophilic group such as carboxyl group and sulfonic acid group and/or a monomer capable of becoming water-soluble through hydrolysis and (c) a crosslinking agent and subsequently carrying out, if necessary, hydrolysis.
Details of the components (a), (b) and (c) used for producing the water-absorbent resins noted above and the proportions of the components (a), (b) and (c), method of production and specific examples of the water-absorbent _ ~ -~~~~~~f~
resins, are described in Japanese Patent Application baid-Open No. 25886/1977 and Japanese Patent Publication No.
46199/1978, No. 46200/1978 and No. 21041/1980.
Examples of the water-absorbent resin other than those noted above, are ~ those obtainable by polymerizing the components (a) and (b) (e. g., hydrolyzed product of starch-acrylonitrile graft copolymer or hydrolyzed product of cellulose-acrylonitrile graft copolymer), ~ crosslinked material of (a) (e. g., crosslinked carboxymethylcellulose), ~ copolymer of the components (b) and (c) (e. g., partially hydrolyzed product of crosslinked polyacrylamide, crosslinked acrylic acid-acrylamide copolymer, crosslinked sulfonated polystyrene, saponified vinylester-unsaturated carboxylic acid copolymer, crosslinked polyacrylic acid or salts thereof, crosslinked acrylic acid--acrylic acid ester copolymer, crosslinked isobutylene-malefic acid anhydride copolymer and crosslinked carboxylic acid denaturated polyvinyl alcohol) and ~ self-crosslinking polymerization product of the component (b) (e. g., self-crosslinkable polyacrylic acid salts). These water-absorbent resins may be used alone or in combinations of two or more of them.
Among the above examples of these water-absorbent resins, ~ and some of ~ such as partially hydrolyzed product of crosslinked polyacrylamide, crosslinked acrylic acid-acrylamide copolymer, crosslinked polyacrylic acid or salts thereof (e. g., alkali metal salts, ammonium salts, etc.), crosslinked acrylic acid-acrylic acid ester copolymer, crosslinked isobutylene-malefic acid anhydride copolymer and crosslinked carboxylic acid denaturated polyvinyl alcohol are preferable.
The preferable water-absorbent resins in the above are those having a water absorption capacity with respect to pure water of at least 50 ml/g, preferably 100 to 1,000, ml/g. The particle size of 'the fine powder of water-absorbent resin is 1 to 840 microns, preferably 5 to 200 microns.
Examples of the excretion treating base material according to the invention are inorganic powder, e.g., kaolin, bent unite, silica sand, shirasu balloon, diatomaceous earth, clay, zeolite, fly ash, etc.; natural fibers, e.g., pulp, straw, grass peat, peat-moss, etc., organic short fibers, e.g., such synthetic fibers as rayon, polyester and polyamide cwt short; sawdust, and cellulosic pulverized product of paper (such as newspapers, cardboards, magazines, etc.) and the like.
These inorganic powder and cellulosic pulverized products usually have a particle diameter (or length of major axis) ranging from 1 to 800 microns, preferably 5 to 200 microns. The length of the organic short fibers is usually 0.001 to 20 mm, preferably 0.01 to 10 mm. These excretion treating base materials may be used alone or in combination of two or more of them.
The agglomerates of the excretion treating base materials may be produced ~ by adding a small quantity of water as binder while mechanically stirring the material or ~ by a compression molding process for agglomeration.
1o As a specific example of the process ~, the excretion treating base material (hereinafter referred to as base material) is put into a mixer, e.g., Nauta*mixer, a ribbon blending mixer, a conical blender, a mortar mixer, a universal mixer, etc., and adding a small quantity of water as uniformly as possible while stirring them. In this way, agglomerates can be readily obtained.
As a method for adding water, there is, for instance, spraying water on the base material, blowing steam to the base material, or holding the base material under a high 20 relative humidity condition to cause it to absorb moisture. As the binder for agglomerating the base material, usually water is used. For the purpose of a binding effect or an effect of improving the water permeability of the agglomerates of the base material, it *Trade-mark is possible, if necessary, to add inorganic salts, alcohols, ethylene glycol, glycerin, polyethylene glycol, polyvinyl alcohol, a surface active agents, and so forth to water.
The amount of water -to be added varies depending on the kind of the base material. Usually it is 1 to 100 preferably 2 to 50 ~ by weight of the weight of the base material. Adding. excessive water results in soft agglomerates, which may collapsed or stick to one another.
In this case, there is no problem if the agglomerates are then dried. However, upon such adding of excess water, drying the agglomerates again after the agglomeration is required, and thus the method is uneconomical. That is, it is preferred to carry out agglomeration with addition of an adequate quantity of water, which does not require re-drying. If quantity of added water is insufficien-t, on the other hand, sufficient agglomeration can not be obtained.
Further, by carrying out -the agglomeration in a heated state at 40 to 90 °C, it is possible to increase the agglomeration speed and mechanical strength of agglomerates and permit efficient agglomeration.
As a specific example of the process ~ mentioned previously, the base material is press molded into pellets in a mold having adequate shape and size. As another example, the base material is press molded into the form of sheet, rod or block, which is then cut or pulverized to an adequate size. In the above processes, pressure is applied usually under the room temperature. However, it is possible to apply pressure at an elevated temperature (for instance 30 to 300 °C) or under an elevated relative humidity (for instance 2 to 100 %).
The pressure in the press molding may be suitably selected depending on the kind, grain size and character of the base material. Usually, it is 1 to 3,000 kg/cmz , preferably 10 to 2,000 kg/cm2 . The press molding may be carried out by using a roller type compression molding machine (e. g., a compacting press machine, a bricketting press machine, etc.), a piston type press molding machine, a screw type press extruder, a filter plate extruder and so forth. The press molded product obtained in the above way may be cut or pulverized to obtain agglomerates having adequate shape and size if necessary.
According to the invention, the agglomerates may have any shape, for instance, spherical, cylindrical, plate-like, roclc-like, rectangular, conical, pyramidal, rod-like and so forth. In -any shape, their size is preferably 0.1 to 20 mm, more preferably 0.5 to 10 mm, in the maximum diameter.
The fine powder of. water-absorbent resin is sprinkled on the agglomerates, thus obtaining -the excretion treating material according to the invention.
The fine powder of water-abso-rbent resin is added usually in an amount of 1 to 50 ~, preferably 3 to 30 ~, by caeight of the agglomerate. If 'the amount is less than 1 ~ by weight, the speed of absorbing pet's urine is reduced. An amount in excess of 50 i by weight is uneconomical.
As for the size of the excretion treating material obtainable in the above way according to the invention, the material has the maximum diameter of 0.5 -to 50 mm preferably, and of 1.0 to 20 mm more preferably. ~Iith -the size in this range, it is preferable that -the material having absorbed a great quantity of urine or the like does not become paste- or liquid-like as a whole but can be suitably handled as solid.
According to the invention, the fine powder of water-absorbent resin can be readily sprinkled on the agglomerates (i.e., attached or adhered to the agglomerate surface) by mechanically blending the agglomerates and fine powder of water-absorbent resin. A small quanatity of water present on the agglomerate surface serves as a binder, and -the fine powder of the water-absorbent resin is bonded on the agglomerate surface. However, if the quantity of water on -the agglomerate surrace is insufficient, sufficient bonding can not be obtained. If the quantity of the water is excessive, on -the other hand, water-absorbent resin powders bonded to the agglomerates surface become gel-like, and their adhesion is reduced.
The adequate quantity of water varies depending on the kind and characteristics of the base material, shape and grain size of the agglomerates, kind and characteristics of the water-absorbent resin and so forth. Usually, it is 1 to 100 ~, preferably 2 to 50 9~, by weight.
The fine powder of water-absorbent resin may be sprinkled on the agglomerates immediately after completion of the agglomeration process in -the same agglomeration equipment by adding the fine powder of water-absorbent resin. Alternatively, the agglomerates formed may be shifted -to a separate container and then subjected to the sprinkling of the fine powder of water-absorbent resin.
The excretion treating material according -to the invention may contain 0.01 to 10 ~ by weight of each of such add hives as deodorizer, perfume, sterilizer, moldproofing agent, antiseptic agemt, antiblocking agent, surface active agent, silvervine to cat or a similar favored material by the pet and volume extending :Filler.
These additives may be added at any time so long as they a-re present in -the excretion treating material according to the invention. For example, they may be added to -the base material or agglomerates thereof or the fine powder of water-absorbent resin, or they may be added during ar after the step of sprinkling the fine powder of water-absorbent resin on the agglomerates.
The excretion treating material according to -the invention may be used in the form of a simplified toilet by laying it in the container. When a cat, a dog or like animal discharges excretions in such a simplified -toilet, the material quickly absorbs the moistures of the excretions, and agglomerates having absorbed the moisture stick together into a rubber-like lump. Thus, this lump portion can be readily picked up, which is convenient for disposal.
The excretion -treating material according to -the invention is illustrated refering to 'the drawings. Figure 1 is a sectional view showing an embodiment of -the treating material according to the invention. Designated at 1 is the agglomerate of the base materials and at 2 is the water-absorbent resin. Figure 2 is a sectional view showing an embodiment of simplified toilet using the treating material according to the invention. Designated at 3 is the treatment material according to the invention, and at 4 is a container.
EXAMPLES
The invention will now be illustrated with reference to following examples that by no means limit the scope of the invention.
Example 1 and Comparative Example 1 500 g of "Kunigel V-1"* commercially available bentonite manufactured by Kunimine Ind. Co., was put into 1o a 2-liter small size universal blending mixer externally held at about 50 °C, and 50 ml of water heated to about 50 °C was added gradually while stirring at 100 rpm to agglomerate. The stirring was continued until hard agglomerates with the maximum diameter of about 2 to 6 mm were produced. A predetermined quantity of "SANWET IM-1000MPS"* fine powder of a graft starch type water-absorbent resin manufactured by Sanyo Chemical Industries, Ltd., with an average particle size of 30 ~ m and a water absorption capacity of 1,000 ml/g., was added to these 2o agglomerates and sprinkled on the agglomerate surface by stirring again at 100 rpm to obtain an excretion treating material according to the invention. The obtained material had a maximum diameter of 2 to 10 mm.
400 g of this treating material was taken in a 1-*Trade-mark liter beaker, and its surface was leveled. 30 cc of artificial urine was charged into a 50-cc disposable syringe (manufactured by Termo Co., Ltd.) and was discharged vertically toward the center of the surface of the material in the beaker from a height of about 2 cm in seconds. The absorbing rate of the artificial urine Was measured. Five minutes after the dischaging of the artificial urine, the part of the treating material lumped from absorption of the urine was taken out using 'tweezers, and the adhesion of the lump and the weight of the wetted portion (the less the better) were measured. The results of measurement are shown in Table 1.
As comparative examples, the agglomerates without sprinkled water-absorbent resin, and the agglomerates obtained by uniformly blending bentonite and wthe water-absorbent resin and carrying out agglomeration in the same method and with the same apparatus as in Example 1 (i.e., the water-absorbent resin was not sprinkled on the surface of the agglomerates but uniformly dispersed in the agglomerates), were subjected to 'the urine absorption test. The results are also shown in Table 1.
Example 2 The same tests as in Example 1 were conducted except for using different base materials and water-absorbent resins. In any test, the fine powder of water-absorbent resin was added in the amount of 10 °6 by weight of the agglomerates. The results are shown in Table 2.
The maximum diameter of the agglomerates obtained was 0.5 to 5 mm. As for the size of the obtained treating material, the maximum diameter was 3 to 15 mm.
Example 3 and Comparative Example 3 Various organic short fibers (fiber length: 0.1 to mm, moisture content: 5 to 15 % by weight) and cellulosic pulverized materials (particle size: 0.1 to 5 mm, moisture content: 5 to 15 ~ by weight) were pressed with a linear pressure of 500 kg/cm using a roller type compression molding machine to obtain a plate with a thickness of 5 mm, which was 'then cu-t using a cutter to obtain agglomerates (pressed pellets) with a agglomerate size of about 5 mm.
~ by weight of "SANWET IM-1000 MPS", fine powder of starch graft type water-absorbent resin (average particle size: 30 a m, water absorption capacity: 1,000 ml/g) manufactured by Sanyo Chemical Tndustries, Ltd., was added to these agglomerates and was sprinkled on the agglomerate surface by stirring at 100 rpm to obtain an excretion treating material according to the invention.
200 g of this treating material was then taken in - ~. 5 -a 1-liter beaker, and its surface was leveled. 'then, 30 cc of an artificial urine was taken in a 50-cc disposable syringe (manufactured by Termo Co., Ltd.) and discharged vertically toward the center of the surface of the material in the beaker from a height of about 2 cm in 5 seconds. The absorbing r ate of the artificial urine was measured. After 5 minutes from the dischrging of the artificial urine, the part of the treating material lumped from absorption of the urine was taken out using tweezers, and the adhesion of the lump and weight of 'the wetted portion (the lower the better) were measured. The results are shown in Table 3.
As comparative examples, the agglomerates without sprinkled water-absorbent resin, and the agglomerates obtained by uniformly blending bentonite and the wa-ter-absorbent resin and carrying out agglomeration in the same method and with the same apparatus as in Example 3 (i.e., the water-absorbent resin was not sprinkled on the surface of the agglomerates but uniformly disparsed in the agglomerates), were subjected to the urine absorption test. The results are also shown in Table 3.
'Tab 1 a 1 "SANWET M-1000MPS"Results urine absorption test I of Dosage Addition Rate of Adhesion Weight *2 of (wt ~) method water avatar No. absor- absorbed tion part (g) (sac.) *1 E xample 1-1 5 Sprinkled 5.7 Excellent 58.1 1-2 10 on the 4.3 Excellent 52.9 sur-1-3 20 face of 3.7 Excellent 50.6 1-4 30 agglomerates3.5 Excellent 49.7 Comparative xample 1-5 Uniformly 80.5 Inferior 102.5 1-6 added in 20.2 Inferior 88.2 1-7 the 17.5 Inferior 81.4 1-8 agglomerates15.?. Passablo 77.4 1-9 15.0 Passable 66.0 (Note) *1: Time (sec.) from ttxe end of sprinkling of the artificial urine, to the water on tho surface of the treating material being absorbed substantially.
*2: Adhesion of the water absorbed part.
Excellent: Water-absorbed agglomerates are firmly adhered with each other to form a rubber-line lump.
Passable: 50 to 70 s~ of hater-absorbed agglomerates are forming a lump.
Inferior: Less than 50 ~ of water-absorbed agglomerates are forming a lump.
Table 2 Results of urine absorption test Main Kind of Rate Adhe- Weight of of component water- water sion water No. of base absorbentabsorp- absorbed material resin tion part (g) powder *3 *4 (sec.) 2-1 Bentonite Polymer 4.3 EXS *5 52.9 A
2-2 Silica sand Polymer 6.2 EXS 63.1 A
2-3 Kaolinite Polymer 6.4 EXS 63.5 A
a. 2-4 Zeoiite Polymer 6.6 EXS 64.9 A
2-5 Bentonite Pol ymer B 4.9 EXS 55.1 w 2-6 Hentonite Polymer 5.2 EXS 56.9 C
2-7 Bentonite Polymer 5.5 EXS 57.5 D
(Note) *3: Particle distribution of the base material powder: The particle size was 5 to 150 ~ m in any sample.
*4: Kind of water-absarbent resin (main component) Polymer A --- "SANWET IM-1000MPS", a trade name by Sanyo Chemical _. Industries, ltd. of a starch/sodium acrylate graft ..
_.. polymer type water-absorbent resin (average particle size: 30 ~ m, water absorption capacity:
1,000 m1/g) Polymer B --- "SANWET I~1-5000MPS", a trade name by Sanyo Chemical Industries, Ltd. of a sodium poly-acrylate 'type water-absorbent resin (average particle size: 25 a m, water absorption capacity: 450 ml/g) Polymer C --- Polyvinyl alcohol/sodium polyacrylate type water-absorbent resin (average grain size: 30 ~ m, water absorption capacity: 350 ml/g) Polymer D --- Isobytylene/sodium maleate copolymer type water-absorbent resin (average grain size: 30 a m, water absorption capacity: 400 ml/g) The fine powder of water-absorbent resin in any sample was added by ZO ~ by weight of agglomerates.
*5: "EXS " means "Excellent "
Table Results f urine ption test o absor Main com- Addition Rate of Adhe- Weight of No. ponent of method water sion portion of agglome- water- absorp- *2 with ab-rates absorbent tion sorption resin (sec.) (g) *1 Example3 3-1 Pulp Sprinkled 6.2 EXS *3 39.1 3-2 Pulp of on the 6.8 EXS 39.5 used surface newspaper of 3-3 Peat-moss agglo- 7.9 EXS 42.6 3-4 Sawdust merates 8.3 EXS 44.0 Comparative Example 3-5 Pulp Uniformly 19.1 Passable43.7 3-6 Pulp of added in 21.3 Passable45.5 used the newspaper agglo-3-7 Peat-moss merates 22.2 Passable47.3 3-8 Sawdust 23.9 Passable49.4 3-9 Pulp Not added 88.3 Inferior65.0 2~,~'~~~~~~
(Note) *1: Time (sec.) from the end of sprinkling of the artificial urine, to 'the water on the surface o:E the treating material being absorbed substantially.
*2: Adhesion of the water absorbed part.
Excellent: Water-absorbed agglomerates are firmly adhered with each other to form a rubber-like lump.
Passable: 50 to '~0 ~ of Water-absorbed agglomerates are forming a lump.
Inferior: Less than 50 ~ of water-absorbed agglomerates are forming a lump.
*3: "EXS " means "Excellent "
~~~~~w~~
The treating material for animal excretions and the method of producing 'the same of the invention have the following excellent effects.
(1) The material can quickly absorb moisture, and its surface soon attains a half dry state. Thus, i~t can prevent contamination the room etc., from attaching of urine to the fur and paw of animals such as pets etc.
(2) The water-absorbent resin absorbs moisture not by physical absorption such as capillary phenomenon but by chemical absorption. Thus, moisture once absorbed is not released when an external pressure is applied.
(3) Agglomerates of the treating material can firmly adhere to each other to form a rubber-like lump when they absorb moisture. Thus only the part -that has absorbed moisture can be readily taken out and disposed of .
(4) The -treating material has high water absorption capacity, and thus it is .less wetted by water absorption, so it is economical.
(5) In the method accarding to 'the invention, the agglomerating step can be easily carried out using a small quantity of water as a binder. The step of sprinkling the fine powder of water-absorbent resin also can be easily carried out because the fine powder is attached to the agglomerates' surface owing to water thereon which serves as a binder. -, t~ith the above effects, -the treating material according to -the invention is useful for treating excretions of animals such as pets etc.
Claims (16)
1. A treating material for animal excretions comprising:
agglomerates of a powdery or short-fiber-like excretion treating base material formed with water and having a water content of 1 to 100% by weight based on the weight of the base material, the base material being selected from the group consisting of an inorganic powder, a natural fiber, an organic short fiber, a sawdust and a cellulosic pulverized product of paper; and a fine powder of a water-absorbent synthetic resin adhered to the surface of the agglomerates, wherein the water-absorbent synthetic resin has a particle diameter of about from 1 to 200 microns and a water-absorption capacity with respect to pure water of about 350 to 1000 ml/g and absorbs moisture by chemical absorption, and wherein the water-absorbent synthetic resin is at least one member selected from the group consisting of a crosslinked starch/sodium acrylate graft polymer water-absorbent resin, a crosslinked sodium polyacrylate water-absorbent resin, a crosslinked polyvinyl alcohol/sodium polyacrylate water-absorbent resin, and a crosslinked isobutylene/sodium maleate copolymer water-absorbent resin.
agglomerates of a powdery or short-fiber-like excretion treating base material formed with water and having a water content of 1 to 100% by weight based on the weight of the base material, the base material being selected from the group consisting of an inorganic powder, a natural fiber, an organic short fiber, a sawdust and a cellulosic pulverized product of paper; and a fine powder of a water-absorbent synthetic resin adhered to the surface of the agglomerates, wherein the water-absorbent synthetic resin has a particle diameter of about from 1 to 200 microns and a water-absorption capacity with respect to pure water of about 350 to 1000 ml/g and absorbs moisture by chemical absorption, and wherein the water-absorbent synthetic resin is at least one member selected from the group consisting of a crosslinked starch/sodium acrylate graft polymer water-absorbent resin, a crosslinked sodium polyacrylate water-absorbent resin, a crosslinked polyvinyl alcohol/sodium polyacrylate water-absorbent resin, and a crosslinked isobutylene/sodium maleate copolymer water-absorbent resin.
2. The treating material according to claim 1, wherein the excretion treating base material is an inorganic powder.
3. The treating material according to claim 1, wherein the excretion treating base material is at least one material selected from the group consisting of organic short fibers and cellulosic pulverized products of paper.
4. The treating material according to any one of claims 1 to 3, wherein the agglomerates have a maximum diameter of about 0.1 to 20 mm.
5. The treating material according to any one of claims 1 to 4, which has a maximum diameter of about 0.5 to 50 mm.
6. The treating material according to any one of claims 1 to 5, wherein the fine powder of water-absorbent resin is present in an amount of about 1 to 50% by weight of the agglomerates.
7. The treating material of any one of claims 1 to 6, wherein the water content of the agglomerates is 2 to 50% by weight based on the weight of the base material.
8. The treating material of claim 1, wherein the base material is selected from the group consisting of kaolin, bentonite, silica sand, shirasu balloon, diatomaceous earth, clay, zeolite, fly ash, pulp, straw, grass peat, peat-moss, synthetic fibers cut short, sawdust and a cellulosic pulverized product of paper.
9. A method for producing a treating material for animal excretions, which comprises:
forming agglomerates from a powdery or short-fiber-like excretion treating base material using water, the agglomerates having a water content of 1 to 100% by weight based on the weight of the base material, and then adhering a fine powder of a water-absorbent synthetic resin on the agglomerates, wherein the base material is selected from the group consisting of an inorganic powder, a natural fiber, an organic short fiber, a sawdust and a cellulosic pulverized product of paper, and the water-absorbent synthetic resin has a particle diameter of about from 1 to 200 microns and a water-absorption capacity with respect to pure water of about 350 to 1000 ml/g and absorbs moisture by chemical absorption, and wherein the water-absorbent synthetic resin is at least one member selected from the group consisting of a crosslinked starch/sodium acrylate graft polymer water-absorbent resin, a crosslinked sodium polyacrylate water-absorbent resin, a crosslinked polyvinyl alcohol/sodium polyacrylate water-absorbent resin, and a crosslinked isobutylene/sodium maleate copolymer water-absorbent resin.
forming agglomerates from a powdery or short-fiber-like excretion treating base material using water, the agglomerates having a water content of 1 to 100% by weight based on the weight of the base material, and then adhering a fine powder of a water-absorbent synthetic resin on the agglomerates, wherein the base material is selected from the group consisting of an inorganic powder, a natural fiber, an organic short fiber, a sawdust and a cellulosic pulverized product of paper, and the water-absorbent synthetic resin has a particle diameter of about from 1 to 200 microns and a water-absorption capacity with respect to pure water of about 350 to 1000 ml/g and absorbs moisture by chemical absorption, and wherein the water-absorbent synthetic resin is at least one member selected from the group consisting of a crosslinked starch/sodium acrylate graft polymer water-absorbent resin, a crosslinked sodium polyacrylate water-absorbent resin, a crosslinked polyvinyl alcohol/sodium polyacrylate water-absorbent resin, and a crosslinked isobutylene/sodium maleate copolymer water-absorbent resin.
10. The method according to claim 9, wherein water is added in an amount of about 2 to 50% by weight of the excretion treating base material.
11. The method according to claim 9 or 10, wherein the excretion treating base material is an inorganic powder.
12. The method according to claim 9 or 10, wherein the excretion treating base material is at least one material selected from the group consisting of organic short fibers and cellulosic pulverized products.
13. The method according to any one of claims 9 to 12, wherein the agglomerates have a maximum diameter of about 0.1 to 20 mm.
14. The method according to any one of claims 9 to 13, wherein the treating material has a maximum diameter of about 0.5 to 50 mm.
15. The method according to any one of claims 9 to 14, wherein the fine powder of water-absorbent resin is present in an amount of about 1 to 50% by weight of said agglomerates.
16. The method of claim 9 or 10, wherein the base material is selected from the group consisting of kaolin, bentonite, silica sand, shirasu balloon, diatomaceous earth, clay, zeolite, fly ash, pulp, straw, grass peat, peat-moss, synthetic fibers cut short, sawdust and a cellulosic pulverized product of paper.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP135929/1991 | 1991-05-10 | ||
| JP3135929A JP2630339B2 (en) | 1991-05-10 | 1991-05-10 | Animal waste treatment material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2067460A1 CA2067460A1 (en) | 1992-11-11 |
| CA2067460C true CA2067460C (en) | 2004-09-21 |
Family
ID=15163151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002067460A Expired - Fee Related CA2067460C (en) | 1991-05-10 | 1992-04-28 | Treating material for animal excretions and method of producing the same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5743213A (en) |
| JP (1) | JP2630339B2 (en) |
| CA (1) | CA2067460C (en) |
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| JPH08154514A (en) * | 1994-12-06 | 1996-06-18 | Nippon Shokubai Co Ltd | Excreta-treating material for breeding animal and its production |
| JP2534031B2 (en) | 1994-12-29 | 1996-09-11 | ペパーレット株式会社 | Urine waste treatment material |
| JP3439885B2 (en) * | 1995-07-07 | 2003-08-25 | 三洋化成工業株式会社 | Pet excrement disposal material and its production method |
| JPH09157531A (en) * | 1995-12-06 | 1997-06-17 | Tomietsu Kogyo:Kk | Sewage cleaning agent |
| US5975018A (en) * | 1998-02-05 | 1999-11-02 | Peparlet Co., Ltd. | Discharged urine or other waste fluids processing material for pet animals |
| AU2362300A (en) * | 1998-12-18 | 2000-07-12 | Ralston Purina Company | Animal litter |
| ATE297117T1 (en) * | 1999-06-17 | 2005-06-15 | Raiffeisen Waren Zentrale Rhei | LETTER MATERIAL FOR ANIMALS AND METHOD FOR PRODUCING SUCH A LETTER MATERIAL |
| US6623645B1 (en) | 2000-10-27 | 2003-09-23 | Dewater Solutions, Inc. | Wastewater containment and treatment methods |
| JP4629219B2 (en) * | 2000-12-18 | 2011-02-09 | クミアイ化学工業株式会社 | Excrement treatment agent for pet and method for producing the same |
| US6561132B2 (en) * | 2001-09-14 | 2003-05-13 | Pets 'n People Ltd. | Feline excretia processing and elimination system |
| DE10202936A1 (en) * | 2002-01-14 | 2003-07-24 | Inst Agrartechnik Bornim E V | Covering material for liquid substances and piles and process for its production |
| US7429421B2 (en) * | 2002-02-05 | 2008-09-30 | Nestec, S.A. | Coated clumping litter comprising non-swelling particles |
| US6887570B2 (en) * | 2002-02-05 | 2005-05-03 | Nestec Ltd. | Coated clumping litter |
| JP3723516B2 (en) * | 2002-03-20 | 2005-12-07 | ペパーレット株式会社 | Granular animal urine treatment material |
| US6745720B2 (en) * | 2002-10-29 | 2004-06-08 | Cycle Group Limited Of Delaware | Clumping animal litter and method of making same |
| US7316201B2 (en) * | 2002-12-13 | 2008-01-08 | Cycle Group Limited Of Delaware | Non-clumping animal litter granules |
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| US7231888B1 (en) * | 2004-03-17 | 2007-06-19 | K C Pet Products, Llc | Disposable absorbent pet transport cushion |
| US7603964B2 (en) * | 2005-04-29 | 2009-10-20 | The Clorox Company | Composite particle animal litter and method thereof |
| CN102215672A (en) | 2008-11-17 | 2011-10-12 | 雀巢产品技术援助有限公司 | Animal litters |
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| JP5616520B1 (en) | 2013-12-26 | 2014-10-29 | ペパーレット株式会社 | Excrement treatment material and manufacturing method thereof |
| CN104396772A (en) * | 2014-12-04 | 2015-03-11 | 芜湖悠派卫生用品有限公司 | Antibacterial health-care cat litter added with dandelion and other natural ingredients and preparation method thereof |
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| US10251368B1 (en) * | 2017-12-12 | 2019-04-09 | Gail Bolka | Animal litter and methods of making and using the same |
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1991
- 1991-05-10 JP JP3135929A patent/JP2630339B2/en not_active Expired - Fee Related
-
1992
- 1992-04-28 CA CA002067460A patent/CA2067460C/en not_active Expired - Fee Related
-
1994
- 1994-07-25 US US08/279,816 patent/US5743213A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04335841A (en) | 1992-11-24 |
| US5743213A (en) | 1998-04-28 |
| CA2067460A1 (en) | 1992-11-11 |
| JP2630339B2 (en) | 1997-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |