Process for preparing microporous membranes

Details Process for preparing microporous membranes Process for preparing microporous membranes

1988-09-26

1990-10-16

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

264171, 26421119, 264344, B29C 6720

Patent

active

049633040

ABSTRACT:
A process for preparing microporous membranes by coextruding a melt of a plurality of interdigitated layers of at least two polymers, one having preferential solubility over the other, dividing and reorienting the layers of said melt into discrete domains of random orientation, forming a thin membrane or like article and leaching the preferentially soluble polymer out of the resulting article.

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patent: 4408893 (1983-10-01), Rice

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