Sulfonated polysulfone composite semipermeable membranes and pro

Details Sulfonated polysulfone composite semipermeable membranes and pro Sulfonated polysulfone composite semipermeable membranes and pro

1988-02-10

1989-04-04

Spear, Frank

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

21050041, 264 41, B01D 1300

Patent

active

048183873

ABSTRACT:
A sulfonated polysulfone composite semipermeable membrane comprising a support membrane having laminated thereon in unity a semipermeable membrane composed of a sulfonated polysulfone formed by sulfonating a polysulfone composed of a recurring unit shown by formula (A) ##STR1## wherein n is an integer of 1 or more and process for producing the same.

REFERENCES:
patent: 4071454 (1978-01-01), Yamamoto et al.
patent: 4214020 (1980-07-01), Ward et al.
patent: 4273903 (1981-06-01), Rose
patent: 4286015 (1981-08-01), Yoshida et al.
patent: 4454176 (1984-06-01), Buckfelder et al.
Kogyo, EP0086365, 8-1983, copy in 210-500.41.

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