PREPARATION OF STAR-SHAPED POLYMERS FROM MACROMONOMERS AND THEIR PROPERTIES AS PAINTS - APPLICATION TO PAINT RESIN

Star-shaped polymers having nearly the same composition as conventiona l paints were prepared by radical polymerization of macromonomers with 3-mercaptopropionic acid, and the sulfide linkages in the molecules w ere converted to sulfone by reaction with hydrogen peroxide. It was fo und that the star-shaped polymers were stable enough against ultraviol et radiation for use as paint resin, and the solution viscosity of the star-shaped polymer was considerably lower that of the corresponding linear polymer with the same molecular weight.