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US 4,728,461 AGranted
Thermoplastic composition of polyphenylene ether, ethylenemethacrylic acid copolymer, and styrene-glycidyl methacrylate copolymer
AssigneeGeneral Electric Company
InventorsSusumu Fujii, Sai-Pei Ting
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Abstract
Novel polyphenylene ether compositions having good chemical resistance, tensile and impact properties are injection moldable without delamination near the gate. The preferred compositions comprise a polyphenylene ether, a high impact polystyrene, a styrene-ethylene/butylene-styrene copolymer, a poly(ethylene-co-methacrylic acid) and a poly(styrene-co-glycidyl methacrylate), and optionally polyethylene.
Claims14
A thermoplastic composition comprising
- (a) a polyphenylene ether resin hydrogenated block copolymer of styrene and butadiene or a combination of the polyphenylene ether resin, the hydrogenated block copolymer of styrene and butadiene with one or more alkenyl aromatic polymers;
- and
- (b) less than 50 percent by weight, based upon 100 percent by weight of (a) and (b) combined of a combination of (i) a copolymer of ethylene and methacrylic acid and (ii) a copolymer of styrene and glycidyl methacrylate.
Dependencies are inferred from the claim text.