Polymer porous structure and process

Details Polymer porous structure and process Polymer porous structure and process

B - Operations, Transporting

01

D

B01D 71/38 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) B01D 71/68 (2006.01) C02F 1/44 (2006.01)

Patent

CA 2155188

A reverse osmosis membrane comprises a support which itself has properties of salt rejection laminated to a layer comprising a cross-linked optionally protected polyol. The support membrane may be a reverse osmosis membrane and the polyol may be polyvinyl alcohol. The membrane of the invention may be prepared by the following steps: a) coating the surface of a support membrane which itself has properties of salt rejection with a solution comprising a polyol; b) cross-linking the polyol, and c) as necessary polymerising and/or protecting the polyol.

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