Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1991-02-25
1992-08-25
Seidleck, James J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525905, 528501, C08G 6548, C08L 7112, C08L 7700
Patent
active
051419998
ABSTRACT:
Polyphenylene ethers are capped by reaction in the melt, with application of vacuum, with at least one trimellitamide, preferably phenyl 4-aminosalicylate trimellitamide. The preferred melt processing method is extrusion with vacuum venting. By this method, the polyphenylene ether is capped with reactive anhydride groups improving its thermo-oxidative stability. The capped polyphenylene ether is capable of forming copolymers with polyamides, and said copolymers are useful as compatibilizers for polyphenylene ether-polyamide blends.
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Fukuyama Sharon M.
Sivavec Timothy M.
Davis Jr. James C.
General Electric Company
Hamilton, III Thomas
Pittman William H.
Seidleck James J.
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