Polyphenylene oxide delivery system for adhesive compositions
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United States of America Patent
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Sep 15, 1998
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app pub date -
Feb 24, 1997
filing date -
Sep 28, 1995
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Abstract
The specification discloses a polyphenylene oxide delivery system for use in preparing an A-B-A block copolymer adhesive formulation having an increased service temperature. The delivery system comprises a preblend of polyphenylene oxide (PPO) resin having a T.sub.g within the range of from about 150.degree. to about 210.degree. C. and a B-block compatible resin. The PPO/B-block resin preblend enables introduction of more PPO into the composition thereby increasing the service temperature of the adhesive formulation.
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