Patent ID: 8703869

Claim:
A polycarbonate composition consisting of A) 63 to 80 parts by weight (based on the sum of the parts by weight of components A, B and C) of aromatic polycarbonate and/or aromatic polyester carbonate with a relative solution viscosity, measured in methylene chloride, of 1.20 to 1.30, B) 15 to 37 parts by weight (based on the sum of the parts by weight of components A, B and C) of rubber-modified component comprising B.1) at least one graft polymer, produced by emulsion polymerisation, by graft polymerisation of B.1.1) 5 to 95 wt. %, based on the sum of B.1.1 and B.1.2, of at least one vinyl monomer on B.1.2) 95 to 5 wt. %, based on the sum of B.1.1 and B.1.2, of one or more particulate rubbers as backbones with glass transition temperatures of <0° C., B.2) optionally a rubber-free vinyl (co)polymer, B.3) optionally a graft polymer of at least one vinyl monomer on at least one rubber backbone with a glass transition temperature of <0° C., produced by a bulk, solution or bulk-suspension polymerisation process, wherein the graft polymers B.1 and B.3, in addition to graft particles, may optionally also comprise as a result of their production free (co)polymer of the vinyl monomers, that are not chemically bonded to the rubber particles and/or included in the graft particles in a form that is insoluble in organic solvents, C) 0.1 to 5 parts by weight (based on the sum of the parts by weight of components A, B and C) of at least one additive selected from the group consisting of pentaerythritol tetrastearate, montan wax, polyethylene wax, flow auxiliaries, block copolymers of ethylene oxide and propylene oxide, polyethers, polyhydroxy ethers, polyether amides, polyester amides, sulfonic acid salts, antibacterial additives, silicone oils, hard fillers, glass or ceramic (hollow) spheres, optionally ground glass, carbon fibres, mica, kaolin, CaCO 3 , glass flakes, IR absorbers, optical brighteners, fluorescent additives, dyes, pigments, and Brönsted acid compounds, wherein (i) the rubber content of the polycarbonate composition is 1 to 6 wt. %, and (ii) at least 50 wt. % of the graft particles in component B have a diameter (measured by ultracentrifuge) below 200 nm, and wherein no more than 25 wt. % of the graft particles in component B have a diameter (measured by ultracentrifuge) of over 400 nm.