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US 4,365,042 AGranted
Compositions of polyphenylene oxides with EPDM-silicone rubber
AssigneeGeneral Electric Company
InventorsGlenn D. Cooper, Arthur Katchman
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Abstract
There are provided novel compositions comprising blends of polyphenylene oxides with EPDM-silicone rubber, and optionally a polystyrene resin. The compositions when molded exhibit improved ductility and impact strength. Included within the disclosure are methods of preparing and molding the novel compositions and the molded products obtained therefrom.
Claims13
A composition comprising:
- (a) from about 1 to about 15 percent of a graft copolymer of a rubber interpolymer of a mixture of mono-olefins and a polyene with a silicone rubber;
- (b) from about 30 to about 99 percent by weight of a polyphenylene oxide resin;
- and
- (c) from 0 to about 70 percent by weight of a styrene resin having at least 25% polymer units derived from the compound having the formula:
- ##STR5## wherein R is hydrogen, (lower) alkyl or halogen,
- Z is hydrogen, halogen, (lower) alkyl or vinyl, and
- p is a whole integer from 1 to 5.
4 more elements
The composition which comprises:
- (a) from about 1 to about 15 percent of a graft compolymer of a rubber interpolymer of a mixture of ethylene, propylene and a polyene with a silicone rubber,
- (b) from about 30 to about 90 percent of poly-(2,6-dimethyl-1,4-phenylene)oxide, and
- (c) from 0 to about 70 percent of a homopolystyrene.
Dependencies are inferred from the claim text.