Process for removing residual monomers and oligomers from...

Details Process for removing residual monomers and oligomers from... Process for removing residual monomers and oligomers from...

C - Chemistry, Metallurgy

08

F

C08F 6/10 (2006.01) B01D 61/14 (2006.01) B01J 39/04 (2006.01) C08F 6/00 (2006.01) C08F 6/28 (2006.01)

Patent

CA 2048483

ABSTRACT OF THE INVENTION Treatment of water-soluble, amine-containing polymers with strong acid, cation exchange resins from aromatic copolymer crosslinked with 2 - 25% polyvinyl crosslinker, followed by ultrafiltration with a membrane filter having a molecular-weight cutoff, measured against the polymers to be treated, of about 10,000 to about 15,000, results in a highly effective removal of residual monomers and oligomers of less than 500 molecular weight.

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