Polymer membrane

Details Polymer membrane Polymer membrane

1985-05-20

1988-07-05

Niebling, John F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

204252, 204296, 521 61, 521149, C08J 926

Patent

active

047555408

ABSTRACT:
Porous membranes of aromatic polymer (preferably ether ketone) are prepared with pore size and surface area allowing use in place of asbestos membranes in hot alkaline electrolysis cells. The membranes are prepared by solvent extraction of a polymer which is "partially incompatible" with the aromatic from a blend of the two. The membranes are preferably dried in the presence of a surfactant to enhance re-wetting in use.

REFERENCES:
patent: 3930979 (1976-01-01), Vallance
patent: 4098672 (1978-07-01), Riley
patent: 4311566 (1982-01-01), McCann
patent: 4341619 (1982-07-01), Couper et al.
McGraw-Hill, Encyclopedia of Chemistry, 1983, "Poly-Sulfone Resins", p. 818.
Chem. Abs. 87:191234h (1977) Abstract of Yuasa Battery, JP77-10,824 (1977).

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