Process for the production of copolimeros low molecular weight of halides, vinyl esters, vinyl or vinylidene fluoride and acids.In the aqueous suspension process for producing copolimeros of vinyl chloride, copolimeros of low molecular weight.Process for improving the effect on colloidal stability of mercaptans chain transfer agents and registration of transfer of chain.

摘要

Copolymers of vinyl or vinylidene halides and vinyl esters of C2 and C3 acids are provided having low molecular weights, good particle characteristics, and improved melt flow are made by aqueous polymerization utilizing an effective amount of a mercaptan as a chain transfer agent, wherein the chain transfer agent is admixed with the vinyl esters to form a chain transfer composition, and may be added before the start of the polymerization.