Alkali resistant hyperfiltration membrane

Details Alkali resistant hyperfiltration membrane Alkali resistant hyperfiltration membrane

B - Operations, Transporting

01

D

182/15.3, 117/88

B01D 69/10 (2006.01) B01D 69/12 (2006.01) B01D 71/38 (2006.01) C07C 51/41 (2006.01) C07C 51/42 (2006.01)

Patent

CA 1331114

ABSTRACT A novel hyperfiltration membrane and process for making the same is described. The membrane is useful for processing copper electroless solutions to concentrate for re-use salts of chelating agents. The membrane can be prepared by crosslinking a water- compatible polymer in the presence of a strong mineral acid, such as phosphoric acid.

555994

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