Thermoplastic moulding composition based on polysulphone resins and a graft copolymer

摘要

The invention relates to a thermoplastic moulding composition containing A) from 50 to 98% by weight of a polysulphone resin (polyarylene-polyether-polysulphone), B) from 2 to 50% by weight of a graft copolymer comprising, in each case based on B, b1) from 50 to 90% by weight of at least one elastomer (rubber) and b2) from 10 to 50% by weight of at least one shell grafted onto the elastomer, is characterised in that the graft copolymer B has a mean particle size in the range from 80 to 500 nm (d50 value of the cumulative weight distribution) whose elastomer b1) contains, in copolymerised form, b11 at least 80% by weight of butadiene and b12 from 0 to 20% by weight of styrene and/or acrylonitrile, and whose shell b2 contains, based thereon, b21 from 90 to 10% by weight of styrene and b22 from 10 to 90% by weight of methyl methacrylate. The moulding composition is used for the production of mouldings.