US4016127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsion copolymers of acrolein and their use in treating leather
Assignee: Rohm and Haas Co
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Filing: 1975-01-31
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Granted: 1977-04-05
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Expires: 1995-01-31
Abstract
Abstract Emulsion copolymers containing a) from about 0.25 to about 4% by weight acrolein, b) from about 0.5 to about 10% by weight of an ethylenically unsaturated carboxylic acid, and c) up to about 99.25% by weight of an alkyl acrylate, an alkyl methacrylate, or mixtures thereof are disclosed. The copolymers are useful in leather treating compositions, and particularly in base coat compositions.
Inventors
- 👤 Bjorn E. Larsson
- 👤 Stanley Le Sota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:21
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; C08; C08F; C08F20/00; C08F20/62; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/064; C09D157/00; C09D157/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
An aqueous dispersion of an emulsion copolymer of a. from about 0.25 to 4 by weight of acrolein; b. from about 0.5 to about 10% by weight of an α,β-ethylenically unsaturated carboxylic acid or a mixture of α,β-ethylenically unsaturated carboxylic acids; c. from 0 to about 99.25% by weight of a alkyl (C 1 -C 24 ) ester of methacrylic acid or a mixture of alkyl (C 1 -C 24 ) esters of methacrylic acid; and d. up to about 99.25% by weight of a alkyl (C 1 -C 8 ) ester of acrylic acid or a mixture of alkyl (C 1 -C 8 ) esters of acrylic acid, the sum of (a+b+c+d) always being 100 parts by weight.
Claim 2
Dependent Claim
119 words
An aqueous dispersion of an emulsion copolymer of a. from about 0.25 to 4 by weight of acrolein; b. from about 0.5 to about 10% by weight of an α,β-ethylenically unsaturated carboxylic acid or a mixture of α,β-ethylenically unsaturated carboxylic acids; c. from 0 to about 99.25% by weight of a alkyl (C 1 -C 24 ) ester of methacrylic acid or a mixture of alkyl (C 1 -C 24 ) esters of methacrylic acid; and d. up to about 99.25% by weight of a alkyl (C 1 -C 8 ) ester of acrylic acid or a mixture of alkyl (C 1 -C 8 ) esters of acrylic acid, the sum of (a+b+c+d) always being 100 parts by weight.
Claim 3
Dependent Claim
25 words
The dispersion of claim 1 wherein the copolymer is present in an amount of from about 30 to about 50% by weight of the dispersion.
Claim 4
Dependent Claim
14 words
The dispersion of claim 1 which additionally comprises ammonia or an organic polyprimary amine.
Claim 5
Dependent Claim
12 words
The dispersion of claim 1 which additionally comprises ammonia, diethylenetriamine or hydrazine.
Claim 6
Dependent Claim
21 words
The dispersion of claim 3 wherein the ratio of amine groups to aldehyde groups is from about 1:2 to about 2:1.
Claim 7
Dependent Claim
10 words
The dispersion of claim 1 which additionally comprises a pigment.
Claim 8
Dependent Claim
41 words
The dispersion of claim 1 wherein the α,β-ethylenically unsaturated carboxylic acid in the copolymer is acrylic acid or methacrylic acid and the esters in the copolymer are alkyl (C 1 - C 4 ) esters of methacrylic acid or acrylic acid.
Claim 9
Dependent Claim
108 words
The dispersion of claim 1 wherein the copolymer comprises: a. from about 0.5 to about 3% by weight of acrolein; b. from about 1 to about 10% by weight of an α,β-ethylenically unsaturated carboxylic acid or a mixture of α,β-ethylenically unsaturated carboxylic acids; c. from about 0 to about 50% by weight of an alkyl (C 1 -C 4 ) ester of methacrylic acid or a mixture of said esters, and d. from about 20 to about 90% by weight of an alkyl (C 1 -C 4 ) ester of acrylic acid or a mixture of said esters, the sum of (a+b+c+d) always being 100 parts by weight.
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) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |