09040646 is referenced by 4 patents and cites 141 patents.

A true tetrafluoroethylene (TFE) copolymer of the fine powder type is provided, wherein the copolymer contains polymerized comonomer units of at least one comonomer other than TFE in concentrations of at least or exceeding 1.0 weight percent, and which can exceed 5.0 weight percent, wherein the copolymer is expandable, that is, the copolymer may be expanded to produce strong, useful, expanded TFE copolymeric articles having a microstructure of nodes interconnected by fibrils. Articles made from the expandable copolymer may include tapes, membranes, films, fibers, and are suitable in a variety of end applications, including medical devices.

Title
Expandable TFE copolymers, methods of making, and porous, expanded articles thereof
Application Number
12/408153
Publication Number
9040646 (B2)
Application Date
March 20, 2009
Publication Date
May 26, 2015
Inventor
Lawrence A Ford
Wilmington
DE, US
Agent
Amy L Miller
Assignee
W L Gore & Associates
DE, US
IPC
B29K 105/04
B29K 27/18
C08J 9/00
C08F 214/26
B29C 55/00
A61L 31/14
A61L 31/04
A61L 27/56
A61L 27/50
A61L 27/16
C08F 14/26
C08F 259/08
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