Semipermeable membranes prepared from polymers containing penden

Details Semipermeable membranes prepared from polymers containing penden Semipermeable membranes prepared from polymers containing penden

1984-01-16

1985-06-04

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55158, B01D 5322

Patent

active

045212244

ABSTRACT:
Semipermeable membranes useful for the separation of gases from a mixture containing at least two fractions into enriched fractions of each, the membrane formed from at least one polymer containing a preponderance of arylene units of the formula ##STR1## where each R is independently a C.sub.1 -C.sub.8 aliphatic or a C.sub.5 -C.sub.7 cycloaliphatic hydrocarbon radical, an aryl radical, an aralkyl radical or an alkaryl radical, each radical being free of a tertiary alpha-carbon atom; each Q is a radical of the formula ##STR2## where R' is a C.sub.1 -C.sub.20 linear or branched hydrocarbon or a nonpolymeric aryl radical; X is a divalent oxygen or sulfur atom or a carbonate group; m is an integer of 0-2; and n is 0-1 with the proviso that n is 1 in at least 10 percent of the arylene units of the polymer. A process is also provided whereby a mixture of gases is separated with the foregoing semipermeable membrane.

REFERENCES:
patent: 3259592 (1966-07-01), Fox et al.
patent: 3534528 (1970-10-01), Porter
patent: 3709774 (1973-01-01), Kimura
patent: 3735559 (1973-05-01), Salemme
patent: 3994860 (1976-11-01), Brousse
patent: 4029582 (1977-06-01), Ishii et al.
patent: 4208508 (1980-06-01), Hashino et al.
patent: 4230463 (1980-10-01), Henis et al.
patent: 4273903 (1981-06-01), Rose
patent: 4286015 (1981-08-01), Yoshida et al.
patent: 4351860 (1982-09-01), Yoshida et al.
patent: 4427419 (1984-01-01), Li

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