Scale deposition preventing agent

Details Scale deposition preventing agent Scale deposition preventing agent

C - Chemistry, Metallurgy

08

F

402/33, 204/43.5

C08F 2/00 (2006.01) C08F 20/12 (2006.01)

Patent

CA 1275535

Abstract of the Disclosure A process for preparing a scale deposition preventing agent of a quinone-amine compound suitable for use in a polymerization of acrylic or methacrylic acid ester monomers, which comprises (A) subjecting an aromatic quinone and an aromatic diamine to addition reaction in a solvent having a solubility parameter of 8.5 to 24.0 to give an addition product, and (B) converting the addition product into a high molecular weight compound whithin 24 hours after beginning the addition reaction (A) by adding an oxidizing agent to the addition reaction mixture or by subjecting the addition reaction mixture to anodic oxidation with an electrode to give a quinone-amine compound. According to the present invention, the preparation rate of the scale deposition preventing agent of the quinone-amine compound can be remarkably increased, the yield can be increased, and the obtained compound has excellent properties.

536933

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