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EP0372804A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Ambient temperature curing polymer compositions

Assignee: Rhodia Ltd
•
Filing: 1989-11-29
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Granted: —
•
Expires: 2009-11-29
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Abstract

Abstract The invention relates to a coating composition which cures at ambient temperatures which comprises an aqueous dispersion having a pH of 8.5 to 10 of a copolymer of a) acetoacetoxyethyl acrylate or methacrylate, b) glycidyl acrylate or methacrylate, c) an ethylenically unsaturated polymerisable acid, and d) a monomer other than a), b) and c) and copolymerisable therewith, wherein the weight ratio a) to b) is less than or equal to 0.5/l or greater than 1.5/l and the weight ratio of b) to c) is greater than 1.5/l, the total weight percent of a), b) and c) in the copolymer is from 8 to 60, the weight percent of c) is from 1.5 to 20 and the weight percent of d) is from 40 to 92.

Inventors

  • 👤 Terence E. Say

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 16:25
CPC Classifications
C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/062; C09D133/068

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 116 words
A coating composition which comprises an aqueous dispersion having a pH of 8.5 to 10 of a copolymer of a) acetoacetoxyethyl acrylate or methacrylate, b) glycidyl acrylate or methacrylate, c) an ethylenically unsaturated polymerisable acid, and d) a monomer other than a), b) and c) and copolymerisable therewith, wherein the weight ratio a) to b) is less than or equal to 0.5/l or greater than 1.5/l and the weight ratio of b) to c) is greater than 1.5/l, the total weight percent of a), b) and c) in the copolymer is from 8 to 60, the weight percent of c) is from 1.5 to 20 and the weight percent of d) is from 40 to 92.
Claim 2
Dependent Claim 116 words
A coating composition which comprises an aqueous dispersion having a pH of 8.5 to 10 of a copolymer of a) acetoacetoxyethyl acrylate or methacrylate, b) glycidyl acrylate or methacrylate, c) an ethylenically unsaturated polymerisable acid, and d) a monomer other than a), b) and c) and copolymerisable therewith, wherein the weight ratio a) to b) is less than or equal to 0.5/l or greater than 1.5/l and the weight ratio of b) to c) is greater than 1.5/l, the total weight percent of a), b) and c) in the copolymer is from 8 to 60, the weight percent of c) is from 1.5 to 20 and the weight percent of d) is from 40 to 92.
Claim 3
Dependent Claim 19 words
A composition according to claim 1 wherein the ethylenically unsaturated polymerisable acid c) is acrylic acid or methacrylic acid.
Claim 4
Dependent Claim 20 words
A composition according to claim 1 or 2 wherein the copolymerisable monomer d) is a C₁-C₈ alkyl acrylate or methacrylate.
Claim 5
Dependent Claim 17 words
A composition according to claim 3 wherein the copolymerisable monomer d) is methyl methacrylate or butyl acrylate.
Claim 6
Dependent Claim 21 words
A composition according to any one of the preceding claims wherein the pH has been adjusted with a water soluble base.
Claim 7
Dependent Claim 18 words
A composition according to claim 5 wherein the base is ammonia, sodium hydroxide or a quaternary ammonium hydroxide.
Claim 8
Dependent Claim 14 words
A composition according to claim 6 wherein the quaternary ammonium hydroxide is tetramethylammonium hydroxide.

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