Method for manufacturing of multilayer reverse osmosis membrane

Details Method for manufacturing of multilayer reverse osmosis membrane Method for manufacturing of multilayer reverse osmosis membrane

1991-05-06

1992-01-28

Sever, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210654, 21050038, B01D 6102, B01D 7154, B01D 7156

Patent

active

050841823

ABSTRACT:
The present invention is directed to methods for using an improved reverse osmosis membrane that shows surprisingly improved solute rejection and permeation properties. The membrane includes a separating layer of a polyamideurea formed in situ by reaction of isocyanate-substituted acyl chloride and a diamine-treated microporous substrate.

REFERENCES:
patent: 4366062 (1982-12-01), Kurihara et al.

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