Thermoplastic resin composition containing iminated copolymer

Claim 1

A thermoplastic resin composition comprising: 10 to 90 wt % of an iminated copolymer (Component A) prepared by reacting a nitrogen compound selected from the group consisting of ammonia and a primary amine with a graft copolymerization product obtained by graft-copolymerizing 3 to 40 wt % of a rubber-like polymer, the content of gel in said rubber-like polymer being not more than 5% by weight and the glass transition temperature thereof being below - (minus) 20° C., with 60 to 97 wt % of a monomer mixture consisting essentially of 50 to 95 wt % of an aromatic vinyl monomer, 5 to 50 wt % of an unsaturated dicarboxylic acid anhydride and 0 to 30 wt % of a vinyl monomer copolymerizable with said aromatic vinyl monomer and said unsaturated dicarboxylic acid anhydride; and 10 to 90 wt % of a graft-copolymer (Component B) obtained by graft-copolymerizing 3 to 80 wt % of a rubber-like polymer with 20 to 97 wt % of a monomer mixture consisting essentially of 40 to 100 wt % of an aromatic vinyl monomer, 0 to 40 wt % of a cyanated vinyl monomer and 0 to 40 wt % of a vinyl monomer copolymerizable with said aromatic vinyl monomer and said cyanated vinyl monomer and/or 0 to 80 wt % of a polymer (Component C) obtained by polymerizing 40 to 100 wt % of an aromatic vinyl monomer, 0 to 40 wt % of a cyanated vinyl monomer and 0 to 40 wt % of a vinyl monomer copolymerizable with said aromatic vinyl monomer and said cyanated vinyl monomer wherein the total weight percent of the sum of Component A, Component B and Component C is equal to 100%.