Reverse osmosis membranes of polyamideurethane

Details Reverse osmosis membranes of polyamideurethane Reverse osmosis membranes of polyamideurethane

1991-09-05

1992-08-11

Sever, Frank

Distillation: processes, separatory

Adding material to distilland except water or steam per se

Organic compound

203 60, 203 62, 203 63, 203 91, 528501, E01D 300, C08F 600

Patent

active

051376067

ABSTRACT:
The present invention is directed to an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurethane formed in situ by reaction of a haloformyloxy-substituted acyl halide with a diamine-treated substrate.

REFERENCES:
patent: 4059565 (1977-11-01), Yoshizaki

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