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US Patent 7501474 Polyphenylene ether resin composition

Patent 7501474 was granted and assigned to Asahi Kasei on March, 2009 by the United States Patent and Trademark Office.

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Current Assignee
Asahi Kasei
Asahi Kasei
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7501474
Date of Patent
March 10, 2009
Patent Application Number
10521733
Date Filed
July 18, 2003
Patent Primary Examiner
‌
David Buttner
Patent abstract

A resin composition comprising (A) 70 to 98% by weight of a polyphenylene ether resin or a mixture of a polyphenylene ether resin and a polystyrene-based resin, (B) 1 to 15% by weight of a hydrogenated product of an aromatic vinyl-conjugate diene block copolymer having an aromatic vinyl content of 50 to 80% by weight, and (C) 1 to 15% by weight of a hydrogenated product of an aromatic vinyl-isoprene block copolymer having an aromatic vinyl content of 15 to 45% by weight is excellent in injection moldability (fluidability and productivity), heat resistance, impact resistance and chemical resistance, can provide a molded article excellent in appearance and rigidity even in a thin-walled portion, and can be suitably used for applications in which the molded article is used in contact with water or under conditions of high temperature and high humidity, particularly in a portion which comes into contact with an organic solvent contained in skin lotion or the like.

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