Recovery of cerium from polymer dispersions

Details Recovery of cerium from polymer dispersions Recovery of cerium from polymer dispersions

C - Chemistry, Metallurgy

22

B

53/162

C22B 59/00 (2006.01) C08F 6/02 (2006.01) C08F 251/00 (2006.01)

Patent

CA 1174856

ABSTRACT OF THE DISCLOSURE This invention relates to removal of cerium, used as a free-radical initiator, from aqueous polymeric dispersions, particularly starch graft copolymer dispersions, by adsorbing cerium (III) onto a strong cation exchange resin, to separation of the adsorbed cerium (III) from the resin using a solution such as sodium sulfate or sodium oxalate to form a cerium (III) precipitate, and to oxidation of the separated cerium (III) to cerium (IV).

376280

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