EP0492847A2
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EP
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Air curing polymer composition
Assignee: Rohm and Haas Co
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Filing: 1991-12-04
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Granted: —
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Expires: 2011-12-04
Abstract
Abstract An air curing polymer composition is disclosed which contains acetoacetate functional polymer and a component which generates a free radical flux. The component can be an autoxidizable material and/or a peroxide. The composition cures on exposure to oxygen. One pack stable ambient curing compositions and a method of stabilizing acetoacetate functional groups to prevent hydrolysis are also disclosed.
Inventors
- 👤 Daniel Arthur Bors
- 👤 Alvin Charles Lavoie
- 👤 William David Emmons
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/08; C08F; C08F246/00; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/28; C08F220/283; C08F8/00; C08F8/06; C08F8/30; C08F8/32; C08F2810/00; C08F2810/20; C08F2810/30; C08F2810/50; C08J; C08J7/00; C08J7/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
31 words
A self-crosslinking film-forming composition comprising a vinyl polymer containing pendant acetoacetate functionality and a component which generates a free radical flux on exposure to oxygen, such as oxygen in the air.
Claim 2
Dependent Claim
21 words
A composition according to claim 1 wherein the vinyl polymer containing pendant acetoacetate functionality is soluble in water or water-co-solvent mixtures.
Claim 3
Dependent Claim
24 words
A composition according to claim 1 or 2 wherein the vinyl polymer containing pendant acetoacetate functionality is a solution polymer in non-aqueous organic solvent.
Claim 4
Dependent Claim
21 words
A composition according to any preceding claim wherein the vinyl polymer containing pendant acetoacetate functionality is an emulsion or dispersion polymer.
Claim 5
Dependent Claim
37 words
A composition according to any preceding claim wherein the pendant acetoacetate is incorporated in the vinyl polymer by polymerization of a monomer selected from the group consisting of allyl acetoacetate, acetoacetoxyethyl methacrylate, acetoacetoxypropyl methacrylate, and acetoacetoxybutyl methacrylate.
Claim 6
Dependent Claim
23 words
A composition according to claim 5 wherein the vinyl polymer contains from about 0.5 to 100 percent of the acetoacetate monomer by weight.
Claim 7
Dependent Claim
21 words
A composition according to any preceding claim wherein the vinyl polymer is a homopolymer or copolymer of acetoacetoxyethyl methacrylate or acrylate.
Claim 8
Dependent Claim
28 words
A composition according to any preceding claim wherein the vinyl acetoacetate polymer is a blend of a water soluble acetoacetate polymer and an emulsion or dispersion acetoacetate polymer.
Claim 9
Dependent Claim
15 words
A composition according to any preceding claim wherein the composition further comprises a metal drier.
Claim 10
Dependent Claim
20 words
A composition according to claim 9 wherein the metal drier is incorporated at 0.01 to 1% metal content by weight.
Claim 11
Dependent Claim
17 words
A composition according to claim 9 or claim 10 wherein the metal drier is a cobalt salt.
Claim 12
Dependent Claim
38 words
A composition according to any one of claims 9 to 11 wherein the metal drier is complexed to a complexing agent that prevents substantial reaction in the substantial absence of oxygen but does not prevent reaction in films.
Claim 13
Dependent Claim
26 words
A composition according to any preceding claim wherein substantially all of the pendant acetoacetate functionality has been converted to or is present as pendant enamine functionality.
Claim 14
Dependent Claim
34 words
A composition according to claim 13 wherein the pendant acetoacetate functionality has been converted to pendant enamine functionality by reaction with a molar excess of ammonia or a primary amine capable of enamine formation.
Claim 15
Dependent Claim
25 words
A composition according to claim 14 wherein the primary amine is selected from the group consisting of ethanolamine, methyl amine, and isopropylamine, including mixtures thereof.
Claim 16
Dependent Claim
20 words
A composition according to any preceding claim wherein the component which generates a free radical flux is an autoxidisable component.
Claim 17
Dependent Claim
17 words
A composition according to claim 16 wherein the autoxidizable component contains one or more sites of unsaturation.
Claim 18
Dependent Claim
57 words
A composition according to claim 16 or 17 wherein the autoxidizable component is selected from the group consisting of unsaturated fatty acids, drying oils, alkyds containing drying oils, esters of unsaturated fatty acids, allyl ether functional materials, allyl functional materials, alkyd functional soaps, isoprenes, butadiene, crotyl methacrylate, allyl methacrylate, methacrolein, acrolein and polyallyl ethers, including mixtures thereof.
Claim 19
Dependent Claim
21 words
A composition according to any one of claims 16 to 18 wherein the autoxidizable component is incorporated into the vinyl polymer.
Claim 20
Dependent Claim
32 words
A composition according to any one of claims 1 to 15 wherein the component which generates a free radical flux is a peroxide or a mixture of peroxides that produce free radicals.
Claim 21
Dependent Claim
35 words
A composition according to claims 20 wherein the component which generates a free radical flux is a peroxide or a mixture of peroxides that produce free radicals at from about 0.5 to about 10 percent.
Claim 22
Dependent Claim
26 words
A one part pack comprising a composition according to any one of the preceding claims stored in a sealed container in the substantial absence of oxygen.
Claim 23
Independent Claim
68 words
A method of stabilizing an acetoacetate functional polymer, such as a polymer according to any one of claims 1 to 21, in water to prevent hydrolysis of the acetoacetate functionality prior to use comprising adding ammonia or primary amine in an amount sufficient to form the enamine of the acetoacetate functionality and then storing the resulting composition under conditions that prevent reversal of the enamine formation during storage.
References Cited (Backward Citations)
No citation records indexed.
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