POLYMER SCALE ADHESION-PREVENTING AGENT, POLYMERIZER PREVENTING ADHESION OF POLYMER SCALE AND METHOD FOR PRODUCING POLYMER WITH THE SAME

摘要

PURPOSE: To provide a preventing agent comprising an alkaline solution of the condensation product of an aromatic dibasic acid dihydrazide compound with an aromatic tetracarboxylic acid dianhydride, preventing the adhesion of scales at the time of polymerization of ethylenic double bond-containing monomers, and giving polymerization products having high qualities. ;CONSTITUTION: The preventing agent comprises an alkaline solution of the condensation product of (A) an aromatic dibasic acid dihydrazide compound with (B) an organic tetracarboxylic acid dianhydride. A coating material comprising the alkaline solution is coated on the inner wall of a polymerizer and subsequently dried to form a coating film. The component B is preferably pyromellitic dianhydride, naphthalene tetracarboxylic dianhydride, etc., and the condensation reaction is preferably performed in an organic solvent at room temperature to 50°C for 1-100hr.;COPYRIGHT: (C)1994,JPO&Japio