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US 5,206,294 AGranted
Thermoplastic polymer alloy composition
AssigneeE. I. Du Pont de Nemours and Company
InventorRobert L. Dawson
Life of this patent
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Abstract
Thermoplastic polymer alloy compositions are provided consisting of a blend of polypropylene, ethylene copolymer ionomer resin, ethylene/glycidyl acrylate or methacrylate copolymer, and uncrosslinked ethylene propylene rubber. The compositions are particularly useful in applications where a wide range of temperature and abrasive conditions are encountered.
Claims11
A thermoplastic polymer alloy composition comprising a blend of
- a) 10-40 wt. % polypropylene,
- b) 15-50 wt. % uncrosslinked ethylene propylene copolymer rubber having an ethylene content of 60-80 wt. %,
- c) 20-60 wt. % of an ionomeric copolymer of ethylene and an alpha, beta-unsaturated C.sub.3 -C.sub.8 carboxylic acid, and
- d) 1-5 wt. % of a copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate.
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A process for the preparation of a thermoplastic polymer alloy which comprises melt blending
- a) 10-40 wt. % polypropylene,
- b) 15-50 wt. % uncrosslinked ethylene propylene copolymer rubber having an ethylene content of 60-80 wt. %,
- c) 20-60wt. % of an ionomeric copolymer of ethylene and an alpha, beta-unsaturated C.sub.3 -C.sub.8 carboxylic acid, and
- d) 1-5 wt. % of a copolymer of ethylene and glycidyl acrylate or glycidyl methacrylate.
1 more element
Dependencies are inferred from the claim text.