Molding composition having a matt surface

A molding composition, comprising

• (A) an impact-modified thermoplastic selected from the group consisting of:
• (i) a graft copolymer comprising a core of polymer (A1) and a sheath of a polymer (A2);
• (ii) a mixture of a polymer (A1) and a polymer (A3);
• (iii) a mixture of a polymer (A2) and a polymer (A3);
• (iv) a mixture of a polymer (A3) and a graft copolymer comprising a core of a polymer (A1) and a sheath of a polymer (A2);
• and
• (v) polymer (A3),
• wherein said polymer (A1) is selected from the group consisting of natural rubber, epichlorohydrin rubbers, ethylene-vinyl acetate rubbers, polyethylenechlorosulfonic rubbers, silicone rubbers, polyether rubbers, diene rubbers, hydrogenated diene rubbers, polyakenamer rubbers, acrylate rubbers, ethylene-propylene rubbers, ethylene-propylene-diene rubbers, butyl rubbers, and fluorinated rubbers;
• said polymer (A2) is selected from the group consisting of polymers of styrene, .alpha.-methylstyrene, .alpha.-chlorostyrene, p-chlorostyrene, 2,4-dichlorostyrene, p-methylstyrene, 3,4-dimethylstyrene, p-tert-butylstyrene, o- and p-divinylbenzene, p-methyl-.alpha.-methylstyrene, p-chloro-.alpha.methylstyrene, methylmethacrylate, acrylonitrile, methacrylonitrile, acrylic and methacrylic acids, methyl acrylate, ethyl acrylate, n- and isopropyl acrylate, n- and isobutyl acrylate, tert-butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, n- and isopropyl methacrylate, n- and isobutyl methacrylate, tert-butyl methacrylate, cyclohexyl methacrylate, isobornyl methacrylate, maleic anhydride, maleic acid esters, maleic acid diesters, methyl maleimide, phenyl maleimide, and mixtures thereof;
• said polymer (A3) is selected from the group consisting of polycarbonates, polycarbonate-polysiloxane block copolymers, polycarbonate-polyether block copolymers, polycarbonate-polyester block copolymers, aromatic polyesters, polyester carbonates, aliphatic-aromatic polyesters, amorphous polyamides, partially crystalline polyamides, aromatic polyether ketones, polyether sulfones, polysulfones, polyoxyalkylenes, and polyarylene sulfides;
• and
• (B) 0.1 to 60% by weight, based on the total weight of said molding composition, of a matting agent comprising:
• B1:
• 30 to 80% by weight of an elastomeric grafting base of:
• B11:
• 75 to 99.8% by weight of an alkyl acrylate with 1 to 8 carbon atoms in the alkyl radical,
• B12:
• 0.1 to 5% by weight of a polyfunctional, crosslinking monomer, and
• B13:
• 0.1 to 20% by weight of a monomer containing one or more basic groups, or
• B111:
• 49.9 to 99.9% by weight of one or more dienes,
• B112:
• up to 50% by weight of a further ethylenically unsaturated monomer, and
• B113:
• 0.1 to 20% by weight of a monomer containing one or more basic groups, and
• B2:
• 20 to 70% by weight of a graft sheath of:
• B21:
• 40 to 99.9% by weight of an aromatic vinyl monomer,
• B22:
• up to 49.9% by weight of a polar, copolymerizable, ethylenically unsaturated monomer, and
• B23:
• 0.1 to 20% by weight of a monomer containing one or more acidic groups.