Asymmetric polymer membrane and preparation thereof

Details Asymmetric polymer membrane and preparation thereof Asymmetric polymer membrane and preparation thereof

1991-10-18

1993-08-17

Sever, Frank

Liquid purification or separation

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Material

264 41, 264 451, 264DIG48, 264DIG62, B01D 6700

Patent

active

052365883

ABSTRACT:
An asymmetric polymer membrane is disclosed characterized by being formed by irradiating a monomer and/or an oligomer polymerizable with an energy ray and having a pore diameter distribution in the thickness direction of the membrane, a ratio of a permeability flux of oxygen to nitrogen of 0.9-1.1, and communicating pores.

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3926864 (1975-12-01), Hodgdon, Jr.
patent: 4659470 (1987-04-01), Caneba et al.
patent: 4775474 (1988-10-01), Chau et al.
Gerald B. Tanny, Ph. D., "The High Surface Area-Low Driving Force Alternative in Gas Separation", Proc. 4th Ann. Membrane Technology Planning Conference, pp. 231-243 (1986).
Derwent Abtract, No. 88-1124357, Section Ch, week 8818 of JP 63-069845, Mar. 29, 1988, (Dainippon Printing Co. Ltd.).

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