Patent EP0134691A2 successfully refreshed from Google Patents.
EP0134691A2
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Compositions curable at ambient or slightly elevated temperatures comprising a polyhxdroxy compound together with a specified epoxide/carboxylic anhydride crosslinking system
Assignee: Imperial Chemical Industries Ltd
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Filing: 1984-07-30
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Granted: —
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Expires: 2004-07-30
Abstract
Abstract Compositions capable of curing at ambient or slightly elevated temperatures comprise (i) a compound containing in the molecule at least two hydroxyl groups, in particular a hydroxyl group-bearing addition polymer, (ii) a compound containing in the molecule at least two cyclic carboxylic anhydride groups and (iii) a compound containing in the molecule at least two epoxide groups. The compositions may optionally also contain a catalyst for the reaction between epoxide groups and carboxylic groups. The compositions are of particular value as the basis of room-temperature-curing coating compositions.
Inventors
- 👤 Susan Mary Horley
- 👤 Auguste Louis Lucien Palluel
- 👤 Philip Louis Taylor
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 12:58
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08L; C08L63/00; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4284; C09D167/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
44 words
A curable composition comprising :- (i) a compound containing in the molecule at least two hydroxyl groups; (ii) a compound containing in the molecule at least two cyclic carboxylic anhydride groups; and (iii) a compound containing in the molecule at least two epoxide groups.
Claim 2
Dependent Claim
44 words
A curable composition comprising :- (i) a compound containing in the molecule at least two hydroxyl groups; (ii) a compound containing in the molecule at least two cyclic carboxylic anhydride groups; and (iii) a compound containing in the molecule at least two epoxide groups.
Claim 3
Dependent Claim
95 words
A composition as claimed in claim 1, wherein the component (i) is an addition polymer obtained by the copolymerisation of:- (a) a monomer which is the 1:1 molar adduct either of an a,8-ethylenically unsaturated carboxylic acid with the glycidyl ester of an aliphatic carboxylic acid or of the glycidyl ester of an α,β-ethylenically unsaturated carboxylic acid with an aliphatic carboxylic acid, (b) a hydroxyalkyl ester of an α,β-ethylenically unsaturated carboxylic acid and (c) one or more α,β-ethylenically unsaturated monomers free from hydroxyl groups, the said adduct being formed before, during or after the copolymerisation reaction.
Claim 4
Dependent Claim
54 words
A composition as claimed in claim 2, wherein the monomer (a) is the adduct of acrylic acid with the glycidyl ester of a saturated tertiary alkyl carboxylic acid containing from 8 to 10 carbon atoms in the alkyl group, the monomer (b) is hydroxyethyl methacrylate and the monomers (c) are styrene and methyl methacrylate.
Claim 5
Dependent Claim
28 words
A composition as claimed in any one of claims 1 to 3, wherein the component (ii) is the adduct of trimellitic anhydride with ethylene glycol or with glycerol.
Claim 6
Dependent Claim
27 words
A composition as claimed in any one of claims 1 to 4, wherein the component (iii) is an epoxy resin obtained by condensation of epichlorhydrin with bisphenol-A.
Claim 7
Dependent Claim
22 words
A composition as claimed in any one of claims 1 to 4, wherein the component (iii) is the bisepoxide having the formula
Claim 8
Dependent Claim
29 words
A composition as claimed in any one of claims 1 to 6, comprising as an additional component (iv) a catalyst for the reaction between epoxide groups and carboxyl groups.
Claim 9
Dependent Claim
63 words
A composition as claimed in any one of claims 1 to 7, wherein the component (ii) is employed in a proportion equivalent to approximately one anhydride group per hydroxyl group in the component (i), and the component (iii) is employed in a proportion equivalent to approximately two epoxide groups for each carboxyl group present in the notional adduct from components (i) and (ii).
Claim 10
Dependent Claim
30 words
A composition as claimed in claim 8, wherein the catalyst component (iv) is employed in an amount of from 1% to 10% of the weight of the epoxy component (iii).
Claim 11
Dependent Claim
24 words
A coating composition incorporating a curable composition as claimed in any one of claims 1 to 9, together with one or more conventional additives.
References Cited (Backward Citations)
No citation records indexed.
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