Articles Produced from VDF-co-(TFE or TrFE) Polymers

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United States of America Patent

PATENT NO 10472491
APP PUB NO 20170349724A1
SERIAL NO

15680555

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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VDF-co-(TFE or TrFE) polymers having a molecular weight of at least about 1,000,000 g/mol and a melt temperature less than about 240° C. The VDF copolymer contains at least about 50 mol % VDF monomer and may include an amount of at least one other monomer. The VDF copolymer may be used to form a membrane that has a node and fibril structure. The membrane has a percent porosity of at least 25%. A VDF-co-(TFE or TrFE) polymer membrane may be formed by lubricating the VDF copolymer, subjecting the lubricated polymer to pressure at a temperature below the melting point of the VDF copolymer to form a preform material, and expanding the preform material at a temperature below the melting temperature of the VDF copolymer. Dense VDF copolymer articles, filled VDF copolymer membranes, and VDF copolymer fibers are also provided.

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Patent Owner(s)

Patent OwnerAddress
W L GORE & ASSOCIATES INCNEWARK DE

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sbriglia, Guy A Christiana, US 16 63
Shafer, Gregory J Oxford, US 24 158

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