Semipermeable membranes of polyaryl ether sulfones

Details Semipermeable membranes of polyaryl ether sulfones Semipermeable membranes of polyaryl ether sulfones

1978-07-07

1980-06-17

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

210500M, 528174, B01D 1300, B01D 1304

Patent

active

042085080

ABSTRACT:
A semipermeable membrane of a polyaryl ether sulfone having repeating units of the formula, ##STR1## wherein Ar.sup.1 and Ar.sup.2 independently represent ##STR2## wherein X, Y and Z independently represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a chlorine atom or a bromine atom; and l, m and n independently represent zero or an integer of 1 to 4, and
having a contact angle of its surface to water of at most 65.degree..

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3830781 (1974-08-01), Leslie et al.
patent: 3994860 (1976-11-01), Brousse
patent: 4113699 (1978-09-01), Rose

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