Impact strength of polyphenylene ether-linear polyester articles
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United States of America Patent
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Dec 20, 1988
Grant Date -
N/A
app pub date -
Nov 21, 1986
filing date -
Nov 21, 1986
priority date (Note) -
Expired
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Abstract
Molded articles are prepared from a blend of polyphenylene ether, linear polyester, elastomeric impact modifier and a polyisocyanate or masked polyisocyanate and are then annealed at a temperature above the glass transition temperature of the polyester, in order to increase the impact strength thereof. The preferred polyphenylene ethers are functionalized or unfunctionalized poly(2,6-dimethyl-1,4-phenylene ethers), and the preferred polyesters are poly(ethylene terephthalates) and poly(1,4-butylene terephthalates).
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