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US 5,290,862 AGranted
Transparent high impact alloy
AssigneeNovacor Chemicals (International) S.A.
InventorWilliam G. Blasius
Life of this patent
Estimating the term…
Abstract
A tough polymer alloy is provided and comprises: (i) from 30 to 83 weight percent of a brittle polymer; (ii) from 3 to 50 weight percent of a rubbery polymer; and (iii) from 15 to 67 weight percent of a ductile polymer provided that the ductile polymer and the rubbery polymer are at least compatible.
Claims19
A polymer alloy consisting of:
- (a) from 70 to 30 weight % of a brittle polymer comprising:
- (i) from 80 to 40 weight % of one or more C.sub.8-12 vinyl aromatic monomers;
- (ii) from 20 to 60 weight % of one or more C.sub.1-4 alkyl acrylates or C.sub.1-4 methacrylates;
- and
- (iii) from 0 to 3 weight % of one or more C.sub.3-6 ethylenically unsaturated carboxylic acids;
- (b) from 5 to 30 weight % of a tapered, linear or radial di- or tri- block rubbery polymer comprising:
- (i) from 40 to 45 weight % of one or more C.sub.8-12 vinyl aromatic monomers;
- and
- (ii) from 60 to 55 weight % of one or more C.sub.4-6 conjugated diolefins;
- and
- (c) from 65 to 25 weight % of a tapered, linear or radial di- or tri-block ductile polymer comprising
- (i) from 70 to 80 weight % of one or more C.sub.8-12 vinyl aromatic monomers;
- and
- (ii) from 30 to 20 weight % of one or more C.sub.4-6 conjugated diolefins.
11 more elements
Dependencies are inferred from the claim text.