Fluoropolymer composition for melt processing
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United States of America Patent
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Issued Date -
May 10, 2007
app pub date -
Nov 3, 2006
filing date -
Nov 8, 2005
priority date (Note) -
Abandoned
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Abstract
A composition having excellent resistance to chemical permeation, comprising (A) a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, (B) a melt-flowable polytetrafluoroethylene directly obtained by the polymerization of tetrafluoroethylene, and (C) a polytetrafluoroethylene with a low molecular weight obtained by the radiolysis of a non-melt flowable polytetrafluoroethylene with a high molecular weight; the weight ratio of A/(B+C) is 80/20 to 30/70; and the weight ratio of (A+B)/C is 99.99/0.01 to 90/10.
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