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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10266670 B1

PDFFull Text
Date of Patent:
Apr. 23, 2019

Filed:

Nov. 24, 2015

Articles produced from vdf-co-(tfe or trfe) polymers

Applicant:

W. L. Gore & Associates, Inc., Newark, DE (US);

Inventors:

Guy A. Sbriglia, Christiana, PA (US);

Gregory J. Shafer, Oxford, PA (US);

Assignee:

W. L. Gore & Associates, Inc., Newark, DE (US);

Attorney:

Amy L. Miller

Primary Examiner:

Irina S Zemel

Int. Cl.
CPC ...
B29C 43/24 (2006.01); C08J 9/228 (2006.01); C08K 3/36 (2006.01); C08J 9/16 (2006.01); C08F 214/22 (2006.01); D01F 6/32 (2006.01); B01D 71/32 (2006.01); B01D 71/34 (2006.01); B29C 55/00 (2006.01); H01L 41/193 (2006.01); H01L 41/45 (2013.01); B01D 71/76 (2006.01); B29C 43/00 (2006.01); B29K 27/12 (2006.01); B29C 55/02 (2006.01); B29K 27/00 (2006.01); B29K 105/16 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01); B01D 71/36 (2006.01);
U.S. Cl.
CPC ...
C08K 3/36 (2013.01); B01D 71/32 (2013.01); B01D 71/34 (2013.01); B01D 71/76 (2013.01); B29C 43/003 (2013.01); B29C 43/24 (2013.01); B29C 55/005 (2013.01); C08F 214/22 (2013.01); C08J 9/16 (2013.01); C08J 9/228 (2013.01); D01F 6/32 (2013.01); H01L 41/193 (2013.01); H01L 41/45 (2013.01); B01D 71/36 (2013.01); B29C 55/02 (2013.01); B29K 2027/12 (2013.01); B29K 2027/16 (2013.01); B29K 2105/16 (2013.01); B29K 2105/25 (2013.01); B29L 2031/755 (2013.01); C08J 2327/16 (2013.01);
Abstract

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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