Elastomer with improved high temperature characteristics
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United States of America Patent
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Jun 28, 1988
Grant Date -
N/A
app pub date -
Mar 25, 1987
filing date -
Mar 25, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A soft thermoplastic, elastomeric alloy containing a thermoplastic, elastomeric block copolymer material, a polyethylene, and a polyphenylene ether material, prepared by blending in an extruder with an L/D ratio equal to or greater than 30 to 1. The alloy comprises a blend of from about 80 to 98% thermoplastic, elastomeric block copolymer material; from about 1 to 10% by weight of low melt index, highly crystalline polyethylene; and from about 1 to 10% by weight of polyphenylene ether. The material demonstrates excellent creep resistance at elevated temperatures as well as a variety of other excellent physical properties.
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