Polytetrafluoroethylene porous material and process for producing the same
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United States of America Patent
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May 5, 1992
Grant Date -
N/A
app pub date -
Jun 15, 1990
filing date -
Jun 15, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A polytetrafluoroethylene porous material and a process for producing the same are disclosed, the material comprising a mixture of polytetrafluoroethylene having a number-average molecular weight of 2,000,000 or more and polytetrafluoroethylene having a number-average molecular weight of 1,000,000 or less, the material having been stretched at least uniaxially.
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