Liquid purification or separation – Filter – Material
Patent
1979-01-03
1981-06-09
Hart, Charles N.
Liquid purification or separation
Filter
Material
210654, B01D 3900
Patent
active
042723787
ABSTRACT:
A method for the preparation of a semipermeable membrane which comprises exposing porous shaped articles of polyacrylonitrile or copolymers thereof containing acrylonitrile in an amount of more than 40% by mole to a plasma.
The resulting semipermeable membrane is very useful for separating substances by reverse osmosis or ultrafiltration.
REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3933653 (1976-01-01), Hashino 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.
patent: 4107049 (1978-08-01), Sano et al.
patent: 4147745 (1979-04-01), Sano et al.
Murase Ichiki
Sano Takezo
Sasaki Masao
Shimomura Takatoshi
Cross E. Rollins
Hart Charles N.
Sumitomo Chemical Company Limited
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