Process for the modification of aromatic polymers via Friedel-Cr

Details Process for the modification of aromatic polymers via Friedel-Cr Process for the modification of aromatic polymers via Friedel-Cr

1986-01-30

1987-08-04

Pertilla, Theodore E.

Gas separation

Means within gas stream for conducting concentrate to collector

55 68, 55 70, 55158, 525390, 525462, 525467, 525537, 525905, B01D 5322, C08L 7104

Patent

active

046843760

ABSTRACT:
A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalyst; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherein G is selected from the group consisting of sulfonyl halides, sulfonamide halides, alkylhalides, acylhalides and phosphorus acid halides; heating the contents of the reaction vessel to form a substituted polyarylene having the formula ##STR2## and thereafter recovering the substituted polyarylene. The substituted polyarylenes are novel and have utility as a semipermeable membrane and a process for the separation of gases therewith is also provided.

REFERENCES:
patent: 3350844 (1967-11-01), Robb
patent: 3780496 (1973-12-01), Ward, III et al.
patent: 4427419 (1984-01-01), Li
patent: 4431793 (1984-02-01), Rosenquist
patent: 4488886 (1984-12-01), Zampini

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