(Co) polymerization method (USE OF PEROXY ACIDS AS MOLECULAR WEIGHT REGULATORS) in the presence of peroxy acid as a molecular weight modifier

摘要

The present invention relates to a process for the preparation of vinyl esters by using a polymerization initiator when there is a large amount of at least one peroxy acid chain transfer agent effective to reduce the molecular weight of the (co) polymer, as compared to the (co) polymer prepared without a chain transfer agent (Co) polymers prepared by the above process and one or more ethylenically unsaturated monomers (co) polymerized by radical polymerization of vinyl halides, dienes, acrylonitriles and -olefin monomers optionally with one or more ethylenically unsaturated monomers, Peroxyacid is used as a specific chain transfer agent, and the peroxy acid is remarkably reduced in molecular weight and is useful as various other polymerization initiators.