Patent US4009684A successfully refreshed from Google Patents.
US4009684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble polymers useful in the preparation of novel animal litter
Assignee: National Patent Development Corp
•
Filing: 1975-11-26
•
Granted: 1977-03-01
•
Expires: 1995-11-26
Abstract
Abstract An animal litter is prepared comprising a loose substrate treated with a solid water soluble copolymer of (a) 5 - 35% of a hydroxyester of a 2-alkenoate having the formula ##STR1## wherein R is alkylene of 2 to 4 carbon atoms and R' is hydrogen or alkyl of 1 to 4 carbon atoms, n is an integer and (b) a copolymerizable water soluble monomer or polymer. The polymer is prepared in solution in a solvent or one of the monomers. A fragrance is also added.
Inventors
- 👤 Karel Kliment
- 👤 Rudolf N. Vermes
- 👤 Richard F. Stockel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:45
CPC Classifications
A; A01; A01K; A01K1/00; A01K1/015; A01K1/0152; A01K1/0154; A01K1/0155
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
79 words
An animal litter comprising (1) a porous, inert solid substrate treated with (2) a solid water soluble copolymer of (a) 5-35% of a hydroxyester of a 2-alkenoate of the formula ##STR4##wherein R is alkylene of 2 to 4 carbon atoms, R' is hydrogen or alkyl of 1 to 4 carbon atoms and n is an integer with (b) 95 to 65% of a copolymerizable water soluble monomer or polymer, said copolymer being impregnated with (3) a fragrance or deodorizer.
Claim 2
Dependent Claim
79 words
An animal litter comprising (1) a porous, inert solid substrate treated with (2) a solid water soluble copolymer of (a) 5-35% of a hydroxyester of a 2-alkenoate of the formula ##STR4##wherein R is alkylene of 2 to 4 carbon atoms, R' is hydrogen or alkyl of 1 to 4 carbon atoms and n is an integer with (b) 95 to 65% of a copolymerizable water soluble monomer or polymer, said copolymer being impregnated with (3) a fragrance or deodorizer.
Claim 3
Dependent Claim
33 words
An animal litter according to claim 1 containing 1 to 100 parts of copolymer per 100 parts of substrate and 0.05 to 150 parts of fragrance or deodorizer per 100 parts of copolymer.
Claim 4
Dependent Claim
31 words
An animal litter according to claim 1 wherein R is alkylene of 2 to 3 carbon atoms, R' is hydrogen or methyl and n is an integer of 1 to 3.
Claim 5
Dependent Claim
33 words
An animal litter according to claim 3 containing 5 to 30 parts of copolymer per 100 parts of substrate and 30 to 120 parts of fragrance or deodorizer per 100 parts of copolymer.
Claim 6
Dependent Claim
12 words
An animal litter according to claim 3 wherein (a) is hydroxyethyl methacrylate.
Claim 7
Dependent Claim
37 words
An animal litter according to claim 1 wherein (b) is an ethylenically unsaturated monomer, a water soluble polysaccharide, a water soluble cellulose ether or ester, a water soluble partially hydrolyzed polyvinyl acetate, polyvinyl pyrrolidone or polyvinyl alcohol.
Claim 8
Dependent Claim
29 words
An animal litter according to claim 1 wherein when (b) is an ethylenically unsaturated monomer the monomer is an ethylenically unsaturated amide, an alkenyl pyrrolidone or an alkenyl pyridine.
Claim 9
Dependent Claim
17 words
An animal litter according to claim 7 wherein the water soluble polysaccharide is a starch or dextrin.
Claim 10
Dependent Claim
24 words
An animal litter according to claim 1 wherein (b) is an ethylenically unsaturated amide, an alkenyl pyrrolidone, an alkenyl pyridine or vinyl sulfonic acid.
Claim 11
Dependent Claim
24 words
An animal litter according to claim 9 wherein (b) is acrylamide, methacrylamide, an N-lower alkyl alkenamide, an N,N-dilower alkyl alkenamide or an alkenyl pyrrolidone.
Claim 12
Dependent Claim
14 words
An animal litter according to claim 10 wherein (b) is acrylamide or N-vinyl pyrrolidone.
Claim 13
Dependent Claim
16 words
An animal litter according to claim 11 wherein (a) is hydroxyethyl methacrylate and (b) is acrylamide.
Claim 14
Dependent Claim
40 words
An animal litter according to claim 12 wherein the copolymer is a copolymer of 10 to 30% of (a) with 90 to 70% of (b), the substrate contains 5 to 30 parts of the copolymer per 100 parts of substrate.
Claim 15
Dependent Claim
24 words
An animal litter according to claim 13 wherein the amount of fragrance or deodorizer is 30 to 120 parts per 100 parts of copolymer.
Claim 16
Dependent Claim
16 words
An animal litter according to claim 1 wherein the substrate contains cellulose, clay or porous bead.
Claim 17
Dependent Claim
12 words
An animal litter according to claim 15 wherein the substrate is clay.
Claim 18
Dependent Claim
12 words
An animal litter according to claim 15 wherein the substrate contains lignocellulose.
Claim 19
Dependent Claim
14 words
An animal litter according to claim 1 wherein the substrate is paper or cloth.
Claim 20
Dependent Claim
12 words
An animal litter according to claim 18 wherein the substrate is paper.
Claim 21
Dependent Claim
28 words
An animal litter according to claim 1 having animal excrement thereon, the amount of fragrance or deodorizer being sufficient to mask or deodorize the odor of the excrement.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |