| abstract |
PURPOSE: To produce a thermoplastic resin excellent in heat stability, impact resistance and moldability, by graft-polymerizing an aromatic vinyl monomer, an unsaturated dicarboxylic acid anhydride, etc. with a rubber-like polymer in the presence of a specified radical initiator and imidating the graft polymer. n CONSTITUTION: A polymerization initiator prepared by mixing a peroxide radical generating initiator (e.g., benzoyl peroxide) with an azoic radical generating initiator (e.g., azobisisobutyronitrile) at a weight ratio of 9/1W1/9 is used in the graft-polymerization of 60W95pts.wt. monomer mixture comprising 50W90wt% aromatic vinyl monomer, 5W50wt% unsaturated dicarboxylic acid anhydride and 0W30wt% vinyl monomer with 5W40pts.wt. rubber-like polymer. The obtained graft polymer is reacted with NH 3 or a prim. amine at 80W350°C to produce an imido group-containing thermoplastic resin. n COPYRIGHT: (C)1985,JPO&Japio |