EP0224736A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Curable compositions
Assignee: Wyeth Holdings LLC
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Filing: 1986-11-04
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Granted: —
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Expires: 2006-11-04
Abstract
Abstract New and improved curable compositions useful as non-yellowing, acid resistant coatings for a variety of substrates and as adhesives and binders are disclosed. The curable compositions comprise a polymeric component comprising poly(C1-C6 alkyl acrylamidoglycolate) functional units and poly (active hydrogen) functional units and preferably an effective amount of a protic acid crosslinking catalyst. In preferred embodiments acid-catalyzed room temperature curable coating compositions are provided. The compositions may be cured effectively at lower temperatures without the use of amines or other toxic crosslinking agents and do not liberate formaldehyde on curing. A method for making poly(C1-C6 alkyl acrylamidoglycolate) functional polymers is also disclosed.
Inventors
- 👤 Howard Robert Lucas
- 👤 Robert Gerald Lees
- 👤 Herbert Burkhard
- 👤 David Arthur Ley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 01:32
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/24; C08L33/26; C08L33/18; C08L33/20; C09; C09D; C09D133/00; C09D133/24; C09D157/00; C09D157/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
62 words
A curable composition comprising: A polymer composition comprising: (i) a combination of (a) a polymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality; and (b) a polymer or molecule containing poly(active hydrogen) functionality; or (ii) a copolymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality and poly (active hydrogen) functionality, said polymer composition comprising from about 1 to about 40 weight percent of C₁-C₆ alkyl acrylamidoglycolate functional units.
Claim 2
Dependent Claim
62 words
A curable composition comprising: A polymer composition comprising: (i) a combination of (a) a polymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality; and (b) a polymer or molecule containing poly(active hydrogen) functionality; or (ii) a copolymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality and poly (active hydrogen) functionality, said polymer composition comprising from about 1 to about 40 weight percent of C₁-C₆ alkyl acrylamidoglycolate functional units.
Claim 3
Dependent Claim
58 words
A curable composition comprising: (A) a polymeric component selected from: (i) a combination of (a) a polymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality; and (b) a polymer or molecule containing poly (active hydrogen) functionality; or (ii) a copolymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality and poly(active hydrogen) functionality; and (B) a crosslinkingly effective amount of a protic acid crosslinking catalyst.
Claim 4
Dependent Claim
58 words
A curable composition comprising: (A) a polymeric component selected from: (i) a combination of (a) a polymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality; and (b) a polymer or molecule containing poly (active hydrogen) functionality; or (ii) a copolymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality and poly(active hydrogen) functionality; and (B) a crosslinkingly effective amount of a protic acid crosslinking catalyst.
Claim 5
Dependent Claim
21 words
A curable composition as recited in Claim 2 wherein said active hydrogen functionality is provided by hydroxyl, carboxyl or amide groups.
Claim 6
Dependent Claim
25 words
A curable composition as recited in Claim 2 wherein component (A) comprises from about 1 to about 40 wt % of C₁-C₆ alkyl acrylamidoglycolate units.
Claim 7
Dependent Claim
26 words
A curable composition as recited in Claim 3 wherein said component (A) comprises from about 1 to about 60 wt % of active hydrogen functional units.
Claim 8
Dependent Claim
48 words
A curable composition as recited in Claim 2, wherein component (B) is present in an amount of from about 0.5% by weight to about 5.0% by weight, based on polymer solids, and is selected from the group consisting of p-toluenesulfonic acid, sulfosalycylic acid, sulfuric acid and phosphoric acid.
Claim 9
Dependent Claim
38 words
A room temperature curable composition comprising: A. a copolymer derived from (i) C₁-C₆ alkyl acrylamidoglycolate units; (ii) hydroxy functional units; and (iii) alpha-methyl group containing units; and B. a crosslinkingly effective amount of a protic acid crosslinking catalyst.
Claim 10
Dependent Claim
38 words
A room temperature curable composition comprising: A. a copolymer derived from (i) C₁-C₆ alkyl acrylamidoglycolate units; (ii) hydroxy functional units; and (iii) alpha-methyl group containing units; and B. a crosslinkingly effective amount of a protic acid crosslinking catalyst.
Claim 11
Dependent Claim
66 words
A room temperature curable composition as recited in Claim 7 wherein said copolymer comprises from about 10 to about 40 weight percent of (i) units; from about 5 to about 30 weight percent of (ii) units; and the residual weight percent to make 100% of (iii) units, wherein said (ii) units comprise hydroxyalkyl methacrylate units and said (iii) units are derived from esters of methacrylic acid.
Claim 12
Independent Claim
60 words
A method for making a polymer containing poly (C₁-C₆ alkyl acrylamidoglycolate) functionality, said method comprising: (a) providing a polymer comprising acrylamide units; and (b) reacting said polymer with at least one C₁-C₆ alkyl glyoxylate C₁-C₆ alkyl hemiacetal at a temperature of between about 60° to about 90°C for a time sufficient to permit the reaction to proceed until substantially complete.
Claim 13
Independent Claim
60 words
A method for making a polymer containing poly (C₁-C₆ alkyl acrylamidoglycolate) functionality, said method comprising: (a) providing a polymer comprising acrylamide units; and (b) reacting said polymer with at least one C₁-C₆ alkyl glyoxylate C₁-C₆ alkyl hemiacetal at a temperature of between about 60° to about 90°C for a time sufficient to permit the reaction to proceed until substantially complete.
Claim 14
Independent Claim
112 words
A method for applying a non-yellowing, acid-resistant coating on a substrate, said method comprising: (a) providing a substrate; (b) applying onto the surface of the substrate a curable composition comprising a polymer composition comprising (i) a combination of (A) a polymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality; and (B) a polymer or molecule containing poly(active hydrogen) functionality; or (ii) a copolymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality and poly(active hydrogen) functionality, said polymer composition comprising from about 1 to about 40 weight percent of C₁-C₆ alkyl acrylamidoglycolate functional units; and (c) heating the coated substrate at elevated temperature of 200°C or less, for a time sufficient to provide a cured acid resistant coating thereon.
Claim 15
Independent Claim
112 words
A method for applying a non-yellowing, acid-resistant coating on a substrate, said method comprising: (a) providing a substrate; (b) applying onto the surface of the substrate a curable composition comprising a polymer composition comprising (i) a combination of (A) a polymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality; and (B) a polymer or molecule containing poly(active hydrogen) functionality; or (ii) a copolymer containing poly(C₁-C₆ alkyl acrylamidoglycolate) functionality and poly(active hydrogen) functionality, said polymer composition comprising from about 1 to about 40 weight percent of C₁-C₆ alkyl acrylamidoglycolate functional units; and (c) heating the coated substrate at elevated temperature of 200°C or less, for a time sufficient to provide a cured acid resistant coating thereon.
References Cited (Backward Citations)
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