Dense articles formed tetrafluoroethylene core shell copolymers and methods of making the same

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United States of America Patent

PATENT NO 9988506
SERIAL NO

15478817

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Abstract

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A tetrafluoroethylene (TFE) copolymer film having a first endotherm between about 50° C. and about 300° C., a second endotherm between about 320° C. and about 350° C., and a third endotherm between about 350° C. and about 400° C. is provided. In exemplary embodiments, the third endotherm is approximately 380° C. In some embodiments, the second endotherm is between about 320° C. and about 330° C. or between about 330° C. and about 350° C. TFE copolymer films have a methane permeability less than about 20 μg*micron/cm2/min. In addition, the dense articles have a void volume of less than about 20%. Methods for dense articles from core shell tetrafluoroethylene copolymers are also provided. The dense articles exhibit improved physical and mechanical properties such as adhesion and barrier properties.

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Patent Owner(s)

Patent OwnerAddress
W L GORE & ASSOCIATES INCNEWARK DE 19711

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ford, Lawrence A München, DE 20 409
Kennedy, Michael E Oxford, US 13 128
Ran, Shaofeng Kennett Square, US 10 39
Sayler, Todd S Bear, US 6 21
Shafer, Gregory J Oxford, US 24 158

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