Process for making surface modified porous membrane with perfluo

Details Process for making surface modified porous membrane with perfluo Process for making surface modified porous membrane with perfluo

1997-05-10

1999-07-27

Michl, Paul R.

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

427235, 4283155, 428421, B32B 2700

Patent

active

059287926

ABSTRACT:
A process is provided for producing a porous membrane product comprising a porous membrane having its surface completely modified with a perfluorocarbon copolymer composition. The porous membrane substrate is contacted with a solution containing a perfluorocarbon copolymer composition to bind the composition onto the substrate surface. The substrate is subjected to a mechanical force to remove excess perfluorocarbon copolymer composition and then is heat treated.

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