Method of producing microporous films

Details Method of producing microporous films Method of producing microporous films

1977-12-20

1980-03-04

Prescott, Arthur C.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204296, 204301, B01D 1302, C25B 1300

Patent

active

041916239

ABSTRACT:
Microporous film having a microporous surface layer, and a method of producing it are provided. The method comprises placing a dope containing a film-forming polymer, a solvent therefor and an ionizable organic compound on a support and passing the dope bearing support through a coagulation bath under the application of an electric current. The resultant film has a microporous structure made up of open, vertically elongated and uniform cells.

REFERENCES:
patent: 3520874 (1970-07-01), Veno et al.
patent: 3718561 (1973-02-01), Jacob

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