Dried porous acrylonitrile polymer membrane, process for produci

Details Dried porous acrylonitrile polymer membrane, process for produci Dried porous acrylonitrile polymer membrane, process for produci

1979-05-09

1981-02-17

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Separator, retainer or spacer insulating structure

429249, H01M 214

Patent

active

042516056

ABSTRACT:
Provided is dried porous membrane composed of acrylonitrile polymer walls separating predominantly interconnecting small-size pores. The membrane has surface layers integrated with a support layer to form a single continuous acrylonitrile polymer phase. At least one of the surface layers has pores of from 0.001 to 0.05 micron in average size, and the support layer has pores which are on the average larger than the pores in the surface layer or layers. The membrane has a porosity of from 20% to 70% by volume and a fragility of below 30. The membrane exhibits improved mechanical properties.

REFERENCES:
patent: 3330702 (1967-07-01), Horowitz
patent: 3615024 (1971-10-01), Michaels
patent: 4025439 (1977-05-01), Kamana et al.
patent: 4046843 (1977-09-01), Sano
patent: 4109066 (1978-08-01), Dick et al.
patent: 4168352 (1979-09-01), Dick et al.

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