Syntheses of polyamide-poly(methyl methacrylate) graft copolymers by polycondensation reactions of macromonomers

Summary Dicarboxyl-terminated macromolecular monomers (macromonomers) were synthesized by radical polymerization of methyl methacrylate in the presence of thiomalic acid as a chain transfer agent. This macromonomer and sebacic acid were condensed with diamines (p,p-diaminodiphenyl ether, p,p-diaminodiphenylmethane and m-phenylenediamine) by triphenylphosphitepyridine system. Thus, graft copolyamides of well-defined structure and composition were readily prepared. This is the first example of the polycondensation reactions of macromonomers.