IMPACT RESISTANT MODIFIED POLYCARBONATE COMPOSITIONS FOR PRODUCING METALIZED MOULDED ARTICLES WITH HOMOGENOUS SURFACE GLOSS

The invention relates to impact-modified polycarbonate compositions, comprising A) 55 to 90 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) 10 to 45 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, i.e. 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 to 25 parts by weight (based on the sum of the parts by weight of components A, B and C) of polymer additives, characterised in that (i) the rubber content of the polycarbonate composition is 1 to 6 wt.%, and (ii) at least 40 wt.% of the graft particles in component B have a diameter (measured by ultracentrifuge) of up to 200 nm, which are distinguished by high heat resistance and good melt flow behaviour. In addition, the mouldings produced from the compositions according to the invention in an injection-moulding process can be metallised, the resulting metallised mouldings having a surface with a particularly high and, in particular, homogeneous gloss. The invention thus also provides the metallised mouldings produced from the compositions according to the invention.