US3864299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Highly Reactive Self-Crosslinkable Copolymers and a Process for Their Production
Assignee: Bayer AG
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Filing: 1973-10-25
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Granted: 1975-02-04
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Expires: 1993-10-25
Abstract
Abstract (Meth)acrylamidomethylene carbamic acid (meth)allyl esters and at least one other copolymerizable monomer are copolymerized by, solution, emulsion or suspension polymerization at temperatures of below about 60*C in the presence of radical-forming agents. Dispersions of the self-crosslinkable copolymers are particularly suitable for impregnating, consolidating and coating non-woven fabric, for coating metal substrates and as dressing for leather.
Inventors
- 👤 Gunter Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:29
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
IN PROCESS FOR PRODUCING HIGHLY REACTIVE, SELFCROSSLINKABLE COPOLYMERS OF ACRYLAMIDOMETHYLENE CARBAMIC ACID ESTERS OR METHACRYLAMIDOMETHYLENE CARBAMIC ACID ESTERS AS MONOMER PRODUCING CROSSLINKING SITES AND AT LEAST ONE OTHER COPOLYMERIZABLE MONOMER BY EMULSION POLYMERIZATION AT TEMPERATURES OF BELOW ABOUT 60*C. IN THE PRESENCE OF A RADICAL FORMING CATALYST, THE IMPROVEMENT WHEREIN ACRYLAMIDOMETHYLENE CARBAMIC ACID ALLYL ESTER, METHACRYLAMIDOMETHYLENE CARBAMIC ACID ALLYL ESTER, ACRYLAMIDOMETHYLENE CARBAMIC ACID METHALLY ESTER OR METHACRYLAMIDOMETHYLENE CARBAMIC ACID METHALLY ESTER IS USED AS THE MONOMER TO PRODUCE CROSSLINKING SITES.
Claim 2
Dependent Claim
80 words
IN PROCESS FOR PRODUCING HIGHLY REACTIVE, SELFCROSSLINKABLE COPOLYMERS OF ACRYLAMIDOMETHYLENE CARBAMIC ACID ESTERS OR METHACRYLAMIDOMETHYLENE CARBAMIC ACID ESTERS AS MONOMER PRODUCING CROSSLINKING SITES AND AT LEAST ONE OTHER COPOLYMERIZABLE MONOMER BY EMULSION POLYMERIZATION AT TEMPERATURES OF BELOW ABOUT 60*C. IN THE PRESENCE OF A RADICAL FORMING CATALYST, THE IMPROVEMENT WHEREIN ACRYLAMIDOMETHYLENE CARBAMIC ACID ALLYL ESTER, METHACRYLAMIDOMETHYLENE CARBAMIC ACID ALLYL ESTER, ACRYLAMIDOMETHYLENE CARBAMIC ACID METHALLY ESTER OR METHACRYLAMIDOMETHYLENE CARBAMIC ACID METHALLY ESTER IS USED AS THE MONOMER TO PRODUCE CROSSLINKING SITES.
Claim 3
Dependent Claim
29 words
An aqueous dispersion having a solid content of from 10 to 55% by weight of copolymerized units of 0.5 to 30% by weight of a monomer of the formula
Claim 4
Dependent Claim
29 words
An aqueous dispersion having a solid content of from 10 to 55% by weight of copolymerized units of 0.5 to 30% by weight of a monomer of the formula
Claim 5
Dependent Claim
62 words
a 10 to 55 % by weight aqueous dispersion of a copolymer of 1 to 5 % by weight of methacrylamidomethylene carbamic acid allyl ester, 70 to 85 % by weight of acrylic acid ester having 1 to 4 carbon atoms in the alcohol component, 8 to 15 % by weight of acrylonitrile, 5 to 10 % by weight of acrylic acid.
Claim 6
Dependent Claim
62 words
a 10 to 55 % by weight aqueous dispersion of a copolymer of 1 to 5 % by weight of methacrylamidomethylene carbamic acid allyl ester, 70 to 85 % by weight of acrylic acid ester having 1 to 4 carbon atoms in the alcohol component, 8 to 15 % by weight of acrylonitrile, 5 to 10 % by weight of acrylic acid.
Claim 7
Dependent Claim
65 words
a leather-dressing agent containing 10 to 55 % by weight aqueous dispersions of a copolymer of 1 to 5 % by weight of methacrylamidomethylene carbamic acid allyl ester, 70 to 85 % by weight of acrylic acid ester having 1 to 4 carbon atoms in the alcohol component, 8 to 15 % by weight of acrylonitrile, 5 to 10 % by weight of acrylic acid.
Claim 8
Dependent Claim
65 words
a leather-dressing agent containing 10 to 55 % by weight aqueous dispersions of a copolymer of 1 to 5 % by weight of methacrylamidomethylene carbamic acid allyl ester, 70 to 85 % by weight of acrylic acid ester having 1 to 4 carbon atoms in the alcohol component, 8 to 15 % by weight of acrylonitrile, 5 to 10 % by weight of acrylic acid.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |