Porous products and process therefor
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United States of America Patent
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-
Feb 5, 1980
Issued Date -
N/A
app pub date -
Jun 21, 1977
filing date -
May 21, 1970
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention provides a tetrafluoroethylene polymer in a porous form which has an amorphous content exceeding about 5% and which has a micro-structure characterized by nodes interconnected by fibrils. The material has high porosity and high strength. It can be used to produce all kinds of shaped articles such as films, tubes, rods, and continuous filaments. Laminations can be employed and impregnation and bonding can readily be used to produce a large variety of articles. Compressed articles of very high strength can also be produced from these porous forms.
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