Permeation modified membrane

Details Permeation modified membrane Permeation modified membrane

1983-06-30

1984-11-27

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

B01D 5322

Patent

active

044849354

ABSTRACT:
A multicomponent membrane having improved permeation characteristics for separation of one gas from a mixture of gases by permeation of the one gas through the membrane. The membrane is in the form of a porous, anisotropic substrate membrane and a coating in contact with the substrate membrane, the coating being made of poly(dimethyl siloxane), containing 1 to 20 weight percent of a permeation-modifying radical selected from the group consisting of ##STR1## The coating is applied to the substrate in the form of a solution of 0.05 to 1 weight percent of the coating in a suitable solvent such as pentane.

REFERENCES:
patent: 4029582 (1977-06-01), Ishii et al.
patent: 4157960 (1979-06-01), Chang et al.
patent: 4214020 (1980-07-01), Ward et al.
patent: 4230463 (1980-10-01), Henis et al.
patent: 4239793 (1980-12-01), Matsuura et al.
patent: 4393113 (1983-07-01), Suqie et al.
patent: 4410338 (1983-10-01), Yamamoto et al.

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