Suspension polymerization of vinyl chloride wherein suspension agent is added after the monomer charge

摘要

Vinyl chloride polymers and copolymers are produced by suspension polymerization in the presence of a small amount of specific ethylene-vinyl acetate copolymers. The catalysts, the ethylene-vinyl acetate copolymer, and the monomer or monomer mixture are added to the polymerization charge before the suspension agent. The resultant polyvinyl chloride is especially suitable for lowering the viscosity of polyvinyl chloride plastisols.