| 主权项 |
1. A composition comprising
A) from 55 to 78 parts by weight of at least one aromatic polycarbonate and/or aromatic polyester carbonate, B) from 12 to 30 parts by weight of polymethyl methacrylate, C) from 7 to 25 parts by weight of a graft polymer of,
C.1 from 25 to 50 wt. %, based on the component C, of at least one vinyl monomer onC.2 from 75 to 50 wt. %, based on the component C, of at least one graft base selected from the group consisting of diene rubbers, EP(D)M rubbers, acrylate, polyurethane, silicone, silicone acrylate, chloroprene and ethylene/vinyl acetate rubbers, D.1) from 0 to 5 part by weight of at least one lubricant and/or mould release agent, D.2) from 0 to 5 part by weight of at least one antistatic and/or conductivity additive, D.3) from 0 to 5 part by weight of at least one stabilizer, D.4) from 0 to 7 part by weight of at least one colouring and/or pigment, D.5) from 0 to 10 part by weight of at least one mineral filler and/or reinforcing material, D.7) from 0 to 2 part by weight of at least one antidripping agent and/or flameproofing synergist, and D.8) from 0 to 10 parts by weight of at least one further polymeric or oligomeric compound, the parts by weight in each case being based on the sum of the parts by weight of the components A+B+C, wherein the aromatic polycarbonate according to the component A has a weight-average molecular weight Mw determined by GPC of from 24,000 to 30,000 g/mol, and wherein the polymethyl methacrylate according to the component B has a weight-average molecular weight Mw, determined by GPC in THF at 40° C. with polystyrene as standard, of from 30,000 to 65,000 g/mol,and wherein the ratio of weight-average to number-average molecular weight Mw/Mn of the polymethyl methacrylate according to the component B, determined by GPC in THF at 40° C. with polystyrene as standard, has a value from 1 to 2.5. |
