Compatibilized compositions of polyphenylene ether, polyester resins and polycarbonate-polyester copolymers

U.S. Patent Number: 5384359

Abstract: In accordance with the invention, there are provided thermoplastic compositions comprising an admixture of: (a) polyphenylene ether resin; (b) polyester resin; and (c) a compatibilizer for (a) and (b) comprised of polycarbonate-polyester copolymer in an amount sufficient to compatiblize components (a) and (b). In preferred embodiments, the polycarbonate-polyester copolymer is present in an amount of at least 2%, preferably at least about 5% and more preferably from about 5% to about 25% by weight based on 100% by weight of (a) and (b). In addition, preferably, the polycarbonate component of said polycarbonate-polyester copolymer is present in an amount of at least 1%, preferably at least about 3%, and more preferably from about 3% to about 20% by weight based on 100% by weight of (a) and (b).

Inventors: Chambers; Gregory R. (Delmar, NY), Smith; Gary F. (Evansville, IN), Yates, III; John B. (Glenmont, NY)

Assignee: General Electric Company (Pittsfield, MA)

Application Number: 07/433,533

Issued: 1995-01-24

Expired: 2007-01-24

Classes: 525/64 ; 525/394; 525/397; 525/67; 525/68; 525/905; 525/92D; 525/92E; 525/92F

Field of search: 525/68,394,67,905,64,68.92,397

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