Benzyl substituted phenylene oxide membrane

Details Benzyl substituted phenylene oxide membrane Benzyl substituted phenylene oxide membrane

1983-06-30

1987-03-03

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 16, B01D 5322

Patent

active

046472975

ABSTRACT:
A gas separation membrane made from a benzyl-substituted polymer of 2,6-dimethyl-1,3-phenylene oxide having the structure ##STR1## wherein the benzyl substituent, X, is selected from the group consisting of ##STR2## where R.sub.1 and R.sub.2 are hydrogen, an alkyl, phenyl or a substituted phenyl or substituted alkyl of 1-6 carbon atoms where the substituent is phenyl, a nitro group, an alkoxy a phenoxy group, sulfide, sulfoxide, a carboxylic acid group or an alcohol, m is 0-0.99, n is 0-0.99 and o is 0.01-99, with m, n and o being decimal portions of a polymeric unit and the sum of m, n and o being 1, p is 1 and q is 0 or 1. Expressed in percentages of a polymeric unit, m is 0-99 percent, n is 0-99 percent and o is 1 to 99 percent. Preferably, m and n are at least 0.01.

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patent: 4230463 (1980-10-01), Henis et al.
patent: 4427419 (1984-01-01), Li

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