abstract |
(57) [Abstract] (Modified) [PROBLEMS] An aromatic vinyl graft copolymer having excellent heat resistance, chemical resistance, etc., having good toughness and compatibilizing ability, and being useful as a material for composite materials and a heat-resistant elastomer. Provision of polymer. SOLUTION: The graft copolymer of an aromatic vinyl monomer (A) and an ethylene copolymer macromer (B), wherein the ethylene copolymer macromer (B) is: An aromatic vinyl monomer (a), ethylene (b), a diene monomer (c), and, if necessary, obtained by copolymerizing an α-olefin (d), The repeating unit derived from A) is from 1 to 98 mol%, and the repeating unit derived from ethylene (b) is from 1 to 98 mol%. Aromatic vinyl, which is an ethylene-based copolymer in which the repeating unit derived from the diene-based monomer (c) is 0.001 to 10 mol% and has a vinyl group derived from the diene-based monomer in the molecular chain. Graft copolymer. |