Gas separating material

Details Gas separating material Gas separating material

1985-11-22

1987-09-01

Herbert, Thomas J.

Stock material or miscellaneous articles

Composite

Of polyimide

55 16, 55158, 2105001, 21050021, 21050023, 21050039, 428220, B32B 2700, B32B 2702, B01D 5322

Patent

active

046908730

ABSTRACT:
A gas separating material having excellent CO.sub.2 gas permeating property, mechanical property, and heat resistance has a gas separating layer comprising an aromatic imide polymer which contains 20 to 100 molar % of recurring units of the formula (I): ##STR1## wherein A.sub.1 is a tetravalent aromatic radical, A is a divalent aromatic radical of the formula (II): ##STR2## in which R and R.sup.1 are H or an organic radical, for example, --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7, or --CH.sub.2 OH, and n is 0, 1, or 2.

REFERENCES:
patent: 4378400 (1983-03-01), Makino et al.
patent: 4528004 (1985-07-01), Makino et al.

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