THERMOPLASTIC RESIN COMPOSITION

摘要

PURPOSE:To provide a composition containing two kinds of specific graft copolymers and having well-balanced impact strength and moldability. CONSTITUTION:The objective composition having a rubber content of 5-40(wt)% is produced by compounding (A) 10-80% graft copolymer having a graft ratio of 25-40% and produced by polymerizing aromatic vinyl compound, an unsaturated nitrile and monomers copolymerizable therewith (the sum of the above monomers is 25-70%) in the presence of 30-75% diene rubber latex (solid basis) having a gel content of >=70% and containing particles of 0.1-0.3mum in diameter accounting for >=90% of the whole latex particles with (B) 90-20% graft copolymer having a graft ratio of 25-60% and produced by polymerizing an aromatic vinyl compound, an unsaturated nitrile and monomers copolymerizable therewith (the sum of the above monomers is 25-70%) in the presence of 30-75% diene rubber latex (solid basis) having a gel content of >=70% and containing particles of 0.3-0.6mum in diameter accounting for >=90% of the whole latex particles and compounding 10-100pts. wt. of the above two kinds of graft copolymers with (C) 0-90pts.wt. of a copolymer containing an aromatic vinyl compound and an unsaturated nitrile.