Process for producing semipermeable membranes

Details Process for producing semipermeable membranes Process for producing semipermeable membranes

1976-10-27

1978-08-15

Anderson, Philip

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

210500M, 264 22, 264 41, B29D 2704, B01D 3100, B01D 3900

Patent

active

041070496

ABSTRACT:
A method for the preparation of semipermeable membranes is disclosed which comprises exposing porous shaped articles of polyacrylonitrile or copolymers containing acrylonitrile in an amount of more than 40% by mole to a plasma consisting essentially of a gaseous organic compound or the mixture of said gaseous organic compound and an inert gas at room temperature under a pressure of 0.01 to 10 Torr.

REFERENCES:
patent: 3657113 (1972-04-01), Stancell et al.
patent: 3846521 (1974-11-01), Osterholtz
patent: 3847652 (1974-11-01), Fletcher et al.
patent: 3950257 (1976-04-01), Ishii et al.
patent: 3992495 (1976-11-01), Sano et al.
patent: 4046843 (1977-09-01), Sano et al.
The Condensed Chemical Dictionary, Eighth Edition, revised by Gessner G. Hawley, New York, Van Nostrand Reinhold, c1971, p. 15.

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