Polymer scale preventive agent

Details Polymer scale preventive agent Polymer scale preventive agent

C - Chemistry, Metallurgy

07

C

C07C 225/28 (2006.01) B01J 19/02 (2006.01) C07C 251/22 (2006.01) C07C 309/26 (2006.01) C07C 323/28 (2006.01) C07D 295/116 (2006.01) C08F 2/00 (2006.01) C09K 3/00 (2006.01)

Patent

CA 2097570

ABSTRACT OF DISCLOSURE Polymer scale preventive agent A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising a condensation product obtained by con- densing (A) an aliphatic diamine compound, and (B) a quinone compound. in an aqueous medium. Where the monomer is polymerized in a polymerization vessel having, on its inner wall surface, a coating comprising the preventive agent, deposition of polymer scale can be effectively prevented not only on the liquid phase part in the polymerization vessel but also near the interface between the gas phase part and the liq- uid phase part, so that the thus obtained polymer can pro- vide a molded item having few fish eyes and low in initial coloration, when the polymer is molded into a sheet or the like.

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