EP0079227A2
Expired / Lapsed
EP
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Elastomer modified unsaturated polymers
Assignee: Scott Bader Co Ltd
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Filing: 1982-11-08
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Granted: —
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Expires: 2002-11-08
Abstract
Abstract An elastomer-modified unsaturated polymer comprises an unsaturated polyester or vinyl ester polymer modified by a low molecular weight elastomer. The elastomer has terminal groups provided by an epoxy resin which render it compatible with the unsaturated polymer. These elastomer-modified unsaturated polymers are useful for providing resin compositions which include a cross-linking agent for the unsaturated polymer. The elastomer is soluble in the resin composition, which is curable to provide an unsaturated resin matrix having particles of the modifying elastomer dispersed therein.
Inventors
- 👤 Ian James Alexander
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 18:49
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
66 words
A modified unsaturated polymer comprising an unsaturated polymer selected from unsaturated polyesters and vinyl ester polymers characterized in that the unsaturated polymer is modified by a modifying polymer, which is the reaction product of a low molecular weight elastomer and a low molecular weight epoxy resin, which epoxy resin provides terminal groups of the modifying polymer which render the modifying polymer compatible with the unsaturated polymer.
Claim 2
Dependent Claim
66 words
A modified unsaturated polymer comprising an unsaturated polymer selected from unsaturated polyesters and vinyl ester polymers characterized in that the unsaturated polymer is modified by a modifying polymer, which is the reaction product of a low molecular weight elastomer and a low molecular weight epoxy resin, which epoxy resin provides terminal groups of the modifying polymer which render the modifying polymer compatible with the unsaturated polymer.
Claim 3
Dependent Claim
31 words
A modified unsaturated polymer according to Claim 1, wherein the elastomer has a maximum molecular weight of about 4000 and the epoxy resin has a maximum molecular weight of about 500.
Claim 4
Dependent Claim
28 words
A modified unsaturated polymer according to Claim 1 or Claim 2, wherein the elastomer is a butadiene/acrylonitrile copolymer having functional groups capable of reaction with the epoxy resin.
Claim 5
Dependent Claim
76 words
A resin composition comprising an unsaturated polymer selected from unsaturated polyesters and vinyl ester polymers and a cross-linking agent capable of cross-linking with the unsaturated polymer characterized in that the unsaturated polymer is modified by a modifying polymer which is the reaction product of a low molecular weight elastomer and a low molecular weight epoxy resin, which epoxy resin provides terminal groups of the modifying polymer which render the modifying polymer compatible with the unsaturated polymer.
Claim 6
Dependent Claim
76 words
A resin composition comprising an unsaturated polymer selected from unsaturated polyesters and vinyl ester polymers and a cross-linking agent capable of cross-linking with the unsaturated polymer characterized in that the unsaturated polymer is modified by a modifying polymer which is the reaction product of a low molecular weight elastomer and a low molecular weight epoxy resin, which epoxy resin provides terminal groups of the modifying polymer which render the modifying polymer compatible with the unsaturated polymer.
Claim 7
Dependent Claim
20 words
A resin composition according to Claim 4, which is a liquid at ambient temperature, the modifying polymer being in solution.
Claim 8
Dependent Claim
42 words
A composition according to Claim 4 or Claim 5, wherein the modifying polymer is present in the composition in an amount of from 5 to 20% inclusive by weight based on the total weight of unsaturated polymer, modifying polymer and cross-linking agent.
Claim 9
Dependent Claim
39 words
A composition according to Claim 4, wherein the cross-linking agent is present in the composition in an amount of from 10 to 50% inclusive by weight based on the total weight of unsaturated polymer, modifying polymer and cress-linking agent.
Claim 10
Dependent Claim
14 words
A composition according to Claim 4, wherein the unsaturated polymer is a crystalline polyester.
Claim 11
Dependent Claim
28 words
A plastics material formed by curing a composition according to Claim 4, which material comprises a cured unsaturated resin matrix having particles of the modifying polymer dispersed. therein.
Claim 12
Dependent Claim
13 words
A plastics material according to Claim 9, which is a reinforced plastics moulding.
References Cited (Backward Citations)
No citation records indexed.
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