Features of chain-length parameters of alkyl methacrylate copolymers with vinyl alkyl esters synthesized by compensation method

In order to determine what is responsible for formation of significant low-molecular fraction at compensation copolymerization of butyl acrylate with vinyl butyl ether in the boiling monomer, the new data have been obtained. The processes of synthesis from the monomer mixture in ampoules, from the boiling monomer with azobisisobutyronitrileas initiator, and by compensation method in the presence of trialkylboranehave been compared. The analysis of chain-length characteristics testifies that the removal of atmospheric oxygen traces during degassing and interaction with trialkylborane results in the copolymer with greater molecular mass compared to its analogue synthesized in the presence of oxygen traces.