Composite reverse osmosis membrane and production thereof

Details Composite reverse osmosis membrane and production thereof Composite reverse osmosis membrane and production thereof

1991-09-13

1992-11-03

Sever, Frank

Liquid purification or separation

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Material

264 451, 264DIG48, 264DIG62, B01D 6912, B01D 7156

Patent

active

051606194

ABSTRACT:
A composite reverse osmosis membrane composed of a microporous support layer and a thin layer supported thereon, characterized in that the thin layer is made of a crosslinked polyamide which comprises a polyamine component having two or more amino groups in the molecule and an acid component containing a linear aliphatic polyacid halide having two or more halogenated carbonyl groups in the molecule.

REFERENCES:
patent: 4277344 (1981-07-01), Cadotte
patent: 4626468 (1986-12-01), Sundet
patent: 4872984 (1989-10-01), Tomaschke
patent: 4964998 (1990-10-01), Cadotte et al.
patent: 5051178 (1991-09-01), Uemura et al.

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