AGENT FOR PREVENTING DEPOSITION OF POLYMER LAYER, POLYMERIATION REACTOR CAPABLE TO EFFECT SUCH PREVENTION AND METHOD OF OBTAINING A POLYMER IN THAT REACTOR

摘要

A polymer scale 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) an aromatic amine compound and (B) a quinone compound. This agent is used for forming a coating on the inner wall, etc. of a polymerization vessel. Such a vessel is effective in preventing polymer scale deposition and useful in producing a polymer that shows very few fish eyes and good whiteness when formed into sheets or the like.