SUPPRESSANT AGAINST DEPOSITION OF POLYMER SCALE, POLYMERIZER SUPPRESSED IN DEPOSITION OF POLYMER SCALE, AND PRODUCTION OF POLYMER

摘要

PURPOSE: To effectively suppress the deposition of polymer scales near the interface between the vapor phase and the liquid phase as well as in the liquid phase in the polymerizer in the polymerization of an ethylenically unsaturated monomer and to markedly reduce the formation of fish eyes on a molding of the obtained polymer. ;CONSTITUTION: The suppressant is one used for the polymerization of an ethylenically unsaturated monomer and comprises a nitrogenous organic compound (A) containing neither sulfonic group nor carboxyl group and containing at least five successive conjugated bonds, an anionic organic compound (B) containing at least either of a sulfonic group and a carboxyl group and containing at least five successive conjugated bonds, and an acrylic acid polymer (C). The polymerizer has a coating film containing the above components A, B and C on its inside wall, and the production process comprises conducting the polymerization in this polymerizer.;COPYRIGHT: (C)1993,JPO&Japio