Polymer scale deposition preventive agent

Details Polymer scale deposition preventive agent Polymer scale deposition preventive agent

C - Chemistry, Metallurgy

09

K

C09K 3/00 (2006.01) C08F 2/00 (2006.01)

Patent

CA 2128572

ABSTRACT OF DISCLOSURE Polymer scale deposition preventive agent A polymer scale deposition preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising an alkaline solution containing a condensation product of (A) a diphenyl compound having at least two amino groups and (B) a quinone compound. When the aforementioned monomer is polymerized in a polymerization vessel having a coating formed by applying the aforementioned preventive agent to inner wall surfaces followed by drying, polymer scale can be effectively prevented from being deposited not only on the areas located in the liquid-phase region but also on the areas around the interface between the gas and liquid phases in the polymerization vessel. When an obtained polymer is formed into a sheet or the like, it is possible to obtain a formed product having few fish eyes and good initial coloration.

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