Separating heavy metals from polymers

Details Separating heavy metals from polymers Separating heavy metals from polymers

C - Chemistry, Metallurgy

08

F

400/2045, 402/45

C08F 6/08 (2006.01) C08C 2/04 (2006.01) C08C 19/02 (2006.01) C08F 6/02 (2006.01) C08F 8/04 (2006.01)

Patent

CA 1263988

A B S T R A C T SEPARATING HEAVY METALS FROM POLYMERS Process for the removal of metal catalyst residues from water-insoluble polymer solutions by: a) treating the solutions with a concentrated solution of an organic acid, and b) separating the resulting acid phase from the polymer, or, alternatively, c) treating the solutions with a dicarboxylic acid, forming insoluble metal precipitates, and d) separating the precipitates from the polymer solution.

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