Patent ID: 6156853
Filing Date: 2000-12-05
Classification: C08F

Abstract:
A method of polymerizing a vinyl monomer, wherein said vinyl monomer is vinyl chloride or a monomer mixture containing vinyl chloride as a major component and one or more other vinyl monomers copolymerizable with vinyl chloride, wherein prior to the polymerization, the internal surfaces of a polymerization reactor for polymerizing a vinyl monomer are coated with a deposit suppressant composition and then the polymerization is carried out, wherein the deposit suppressant composition comprises a polyhydric phenol sulfide compound having an average molecular weight of about 500 to 5000 obtained by condensing a polyhydric phenol compound with sulfur monochloride, wherein said polyhydric phenol sulfide compound has an average number of polyhydric phenol units of about 8 to 15 and is obtained by condensing a polyhydric phenol compound with sulfur monochloride at a temperature of about 50 to about 150.degree. C., and wherein the polyhydric phenol is at least one member selected from the group consisting of resorcinol and pyrogallol.