Ultrathin solid membrane, process for production thereof, and us

Details Ultrathin solid membrane, process for production thereof, and us Ultrathin solid membrane, process for production thereof, and us

1980-12-18

1983-09-27

Spear, Jr., Frank A.

Gas separation

Means within gas stream for conducting concentrate to collector

55158, 264 451, B01D 5322, B01D 3916

Patent

active

044066732

ABSTRACT:
A process for producing ultrathin solid membranes from a solvent solution of an addition polymer derived from an ethylenically unsaturated hydrocarbon monomer or a conjugated unsaturated hydrocarbon monomer in a solvent composed mainly of a volatile, substantially water-immiscible organic liquid medium capable of dissolving the addition polymer and another organic compound having a distribution coefficient k, which is the ratio of the concentration of the other organic compound in the organic liquid medium to that in water, of from 0.5 to 35. The solvent satisfies the equation

REFERENCES:
patent: 3551244 (1970-12-01), Forester et al.
patent: 3615024 (1971-10-01), Michaels
patent: 3950247 (1976-04-01), Chiang et al.
patent: 4132824 (1979-01-01), Kimura et al.
patent: 4197148 (1980-04-01), Shinomura

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