Process for preparing non-porous membrane layers

Details Process for preparing non-porous membrane layers Process for preparing non-porous membrane layers

1989-03-10

1990-12-25

Silverman, Stanley

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

427 38, 427 40, 427 41, 427243, 427244, 427245, 427247, 4274071, 4274072, 427409, 427421, B32B 2700, B05D 306

Patent

active

049802356

ABSTRACT:
The invention relates to a process for preparing non-porous membrane layers by applying a solution comprising a solvent and a (e.g. silicon-containing) polymer having a weight-average molecular weight of at least 300,000 Da onto a porous substrate(e.g. polypropylene) and allowing the solvent to evaporate.

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patent: 4230463 (1980-10-01), Henis et al.
patent: 4230468 (1980-10-01), Henis et al.
patent: 4358378 (1982-11-01), Ihama et al.
patent: 4533369 (1985-08-01), Okita
patent: 4759776 (1988-07-01), Langsam et al.
patent: 4832713 (1989-05-01), Yamado et al.

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