Patent EP0271970A2 successfully refreshed from Google Patents.
EP0271970A2
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EP
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Thickened moulding compositions
Assignee: Scott Bader Co Ltd
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Filing: 1987-06-09
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Granted: —
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Expires: 2007-06-09
Abstract
Abstract A thickened moulding composition comprises fibrous reinforcement, an ethylenically unsaturated polymer, a monomer copolymerisable therewith and a crystalline unsaturated polyester having a glycol component derived from at least two symmetrical glycols. Preferably, the crystalline polyester has a molecular weight per double bond of no more than about 210 and a melting point of from 50-115 DEG C.
Inventors
- 👤 Trevor Richard Osborne
- 👤 Stephen John Thompson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:54
CPC Classifications
C; C08; C08L; C08L63/00; C08L63/10; C08L67/00; C08L67/06; C08L75/00; C08L75/04; C08L75/14; C08L75/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
40 words
A composition comprising fibrous reinforcement, an ethylenically unsaturated, essentially amorphous, polymer, a monomer copolymerisable therewith, and as thickener, a crystalline unsaturated polyester characterised in that the crystalline unsaturated polyester has a glycol component derived from at least two symmetrical glycols.
Claim 2
Dependent Claim
40 words
A composition comprising fibrous reinforcement, an ethylenically unsaturated, essentially amorphous, polymer, a monomer copolymerisable therewith, and as thickener, a crystalline unsaturated polyester characterised in that the crystalline unsaturated polyester has a glycol component derived from at least two symmetrical glycols.
Claim 3
Dependent Claim
24 words
A composition according to Claim 1, wherein the crystalline unsaturated polyester has a molecular weight per double bond of no more than about 210.
Claim 4
Dependent Claim
27 words
A composition according to Claim 1 or Claim 2, wherein the crystalline unsaturated polyester has a melting point of from about 50 to about 115 °C inclusive.
Claim 5
Dependent Claim
36 words
A composition according to any one of the preceding Claims, wherein the crystalline unsaturated polyester has a melt viscosity of from about 1 to about 40 p (about 0.1 to about 4 Pa.s) inclusive at 125°C.
Claim 6
Dependent Claim
32 words
A composition according to any one of the preceding Claims, wherein the glycol component is derived from a mixture of two glycols each selected from 1,6-hexanediol, ethylene glycol, neopentyl glycol and 1,4-cyclohexanedimethanol.
Claim 7
Dependent Claim
26 words
A composition according to Claim 5, wherein the glycol component is derived from a mixture of 1,6-hexanediol and a glycol selected from ethylene glycol and 1,4-cyclohexanedimethanol.
Claim 8
Dependent Claim
20 words
A composition according to Claim 5, wherein the glycol component is derived from a mixture of ethylene glycol and 1,4-cyclohexanedimethanol.
Claim 9
Dependent Claim
51 words
A composition according to any one of the preceding Claims, wherein the crystalline unsaturated polyester is present in the composition in an amount of from about 10 to about 50% by weight of the total weight of the ethylenically unsaturated amorphous polymer, the monomer copolymerisable therewith and the crystalline unsaturated polyester.
Claim 10
Dependent Claim
16 words
A composition according to any one of the preceding Claims, which is a sheet moulding compound.
Claim 11
Dependent Claim
17 words
A composition according to any one of Claims 1 to 8, which is a thick moulding compound.
Claim 12
Dependent Claim
28 words
A composition according to any one of the preceding Claims, wherein the ethylenically unsaturated amorphous polymer is an unsaturated polyester, a vinyl ester or a urethane acrylate polymer.
Claim 13
Dependent Claim
20 words
A composition according to any one of the preceding Claims, which additionally includes a low profile and/or low shrink additive.
Claim 14
Dependent Claim
40 words
A composition according to Claim 12, wherein the low profile and/or low shrink additive is polyethylene, an acrylic copolymer, polystyrene optionally modified by the presence of units capable of providing elastomeric properties, a saturated polyester, a polycaprolactone, or polyvinyl acetate.
References Cited (Backward Citations)
No citation records indexed.
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