EP0075765A1
Expired / Lapsed
EP
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Polyester molding compositions
Assignee: Union Carbide Corp
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Filing: 1982-09-10
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Granted: —
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Expires: 2002-09-10
Abstract
Abstract The addition of an unsaturated fatty acid ester to low shrinking polyester molding compositions containing unsaturated polyesters results in moldings with improved surface characteristics.
Inventors
- 👤 Kenneth Earl Atkins
- 👤 Raymond Cornelius Gandy
- 👤 Robert Ray Gentry
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 04:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08L; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
39 words
1) A low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to'control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, characterized in that it comprises an unsaturated fatty acid ester.
Claim 2
Dependent Claim
39 words
1) A low profile additive composition containing a thermosetting unsaturated polyester, a thermoplastic polymer additive to'control shrinkage, and an ethylenically unsaturated polymerizable monomer suitable for use in molding applications, characterized in that it comprises an unsaturated fatty acid ester.
Claim 3
Dependent Claim
23 words
2) A composition as defined in claim 1 wherein the unsaturated fatty acid'ester is 2-ethylhexyl tallate, tall oil, soybean oil or linseed oil.
Claim 4
Dependent Claim
20 words
3) A composition as defined in claim 1 or 2 containing a thickening amount of a chemically active thickening agent.
Claim 5
Dependent Claim
18 words
4) A composition as defined in claim 3 wherein the thickening agent is magnesium oxide or calcium oxide.
Claim 6
Dependent Claim
26 words
5) A composition as defined in any of claims 1 - 4 wherein the low profile additive is a polyvinyl acetate, preferably a carboxylated polyvinyl acetate.
Claim 7
Dependent Claim
16 words
6) A composition as defined in any of claims 1 - 5 containing a reinforcing filler.
Claim 8
Dependent Claim
15 words
7) A composition as defined in claim 6 wherein the reinforcing filler is glass fiber.
Claim 9
Dependent Claim
17 words
8) A composition as defined in any of claims 1 - 7 containing a rubber or elastomer.
Claim 10
Dependent Claim
15 words
9) A molded article produced from the composition of any of claims 1 - 8.
References Cited (Backward Citations)
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