Multilayer reverse osmosis membrane of polyamide-urea

Details Multilayer reverse osmosis membrane of polyamide-urea Multilayer reverse osmosis membrane of polyamide-urea

C - Chemistry, Metallurgy

07

C

C07C 263/10 (2006.01) B01D 69/12 (2006.01) B01D 71/54 (2006.01) B01D 71/56 (2006.01) C07C 265/12 (2006.01) C08G 18/32 (2006.01) C08G 18/71 (2006.01) C08G 18/77 (2006.01) C12C 7/14 (2006.01) C12H 1/16 (2006.01)

Patent

CA 2047989

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 polyamideurea formed in situ by reaction of isocyanate-substituted acyl chloride and a diamine- treated microporous substrate.

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