Thermoplastic molding composition comprising components A, B, C, D, E and F: 15 to 35 wt.-% of at least one graft copolymer consisting of 15 to 60 wt.-% of a graft sheath and 40 to 85 wt.-% of a graft substrate - an agglomerated butadiene rubber latex -, where and sum up to 100 wt.-%, obtained by emulsion polymerization of styrene and acrylonitrile in a weight ratio of 95:5 to 65:35 to obtain a graft sheath, it being possible for styrene and/or acrylonitrile to be replaced partially (less than 50 wt.-%) by alpha-methylstyrene, methyl methacrylate or maleic anhydride or mixtures thereof, in the presence of at least one agglomerated butadiene rubber latex with a median weight particle diameter D 50 of 150 to 800 nm, where the agglomerated rubber latex is obtained by agglomeration of at least one starting butadiene rubber latex (S-A1) having a median weight particle diameter D 50 of equal to or less than 120 nm, preferably equal to or less than 110 nm; 15 to 35 wt.-% of at least one copolymer of alpha-methylstyrene and acrylonitrile in a weight ratio of from 95:5 to 50:50, it being possible for alpha-methylstyrene and/or acrylonitrile to be partially (less than 50 wt.-%) replaced by methyl methacrylate, maleic anhydride and/or 4-phenylstyrene; 20 to 40 wt.-% of at least one copolymer of styrene and acrylonitrile in a weight ratio of from 95:5 to 50:50, it being possible for styrene and/or acrylonitrile to be partially (less than 50 wt.-%) replaced by methyl methacrylate, maleic anhydride and/or 4-phenylstyrene; wherein copolymer C has a weight average molar mass M w of 150,000 to 300,000 g/mol; 10 to 30 wt.-% of at least one random terpolymer comprising 13 to 27 wt.-% recurring units of an α, β ethylenically unsaturated cyclic anhydride, 60 to 74 wt.- % recurring units of an aromatic vinyl monomer, and 13 to 27 wt.-% recurring units of a maleimide monomer; 0.1 to 5 wt.-%, of at least one elastomeric block copolymer comprising at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer and at least one elastomeric block B/S which forms a soft phase and incorporates both units of a vinylaromatic monomer and of a conjugated diene, where S is the vinylaromatic block and B/S is the soft phase, wherein the block is built up randomly from diene units and vinylaromatic units, and where the glass transition temperature Tg of the block S is above 25°C, and that of the block B/S is below 25°C, and the phase volume ratio of block S to block B/S is selected so that the proportion of hard phase in the entire block copolymer is from 1 to 40% by volume and the proportion of the diene is less than 50% by weight, based on the entire block copolymer; 0 to 5 wt.-% of further additives and/or processing aids; where the components A, B, C, D, E and, if present F, sum to 100 wt.-%. 15 to 35 wt.-% of at least one graft copolymer consisting of 15 to 60 wt.-% of a graft sheath and 40 to 85 wt.-% of a graft substrate - an agglomerated butadiene rubber latex -, where and sum up to 100 wt.-%, obtained by emulsion polymerization of styrene and acrylonitrile in a weight ratio of 95:5 to 65:35 to obtain a graft sheath, it being possible for styrene and/or acrylonitrile to be replaced partially (less than 50 wt.-%) by alpha-methylstyrene, methyl methacrylate or maleic anhydride or mixtures thereof, in the presence of at least one agglomerated butadiene rubber latex with a median weight particle diameter D 50 of 150 to 800 nm, where the agglomerated rubber latex is obtained by agglomeration of at least one starting butadiene rubber latex (S-A1) having a median weight particle diameter D 50 of equal to or less than 120 nm, preferably equal to or less than 110 nm; 15 to 35 wt.-% of at least one copolymer of alpha-methylstyrene and acrylonitrile in a weight ratio of from 95:5 to 50:50, it being possible for alpha-methylstyrene and/or acrylonitrile to be partially (less than 50 wt.-%) replaced by methyl methacrylate, maleic anhydride and/or 4-phenylstyrene; 20 to 40 wt.-% of at least one copolymer of styrene and acrylonitrile in a weight ratio of from 95:5 to 50:50, it being possible for styrene and/or acrylonitrile to be partially (less than 50 wt.-%) replaced by methyl methacrylate, maleic anhydride and/or 4-phenylstyrene; wherein copolymer C has a weight average molar mass M w of 150,000 to 300,000 g/mol; 10 to 30 wt.-% of at least one random terpolymer comprising 13 to 27 wt.-% recurring units of an α, β ethylenically unsaturated cyclic anhydride, 60 to 74 wt.- % recurring units of an aromatic vinyl monomer, and 13 to 27 wt.-% recurring units of a maleimide monomer; 0.1 to 5 wt.-%, of at least one elastomeric block copolymer comprising at least one block S which forms a hard phase and incorporates units of a vinylaromatic monomer and at least one elastomeric block B/S which forms a soft phase and incorporates both units of a vinylaromatic monomer and of a conjugated diene, where S is the vinylaromatic block and B/S is the soft phase, wherein the block is built up randomly from diene units and vinylaromatic units, and where the glass transition temperature Tg of the block S is above 25°C, and that of the block B/S is below 25°C, and the phase volume ratio of block S to block B/S is selected so that the proportion of hard phase in the entire block copolymer is from 1 to 40% by volume and the proportion of the diene is less than 50% by weight, based on the entire block copolymer; 0 to 5 wt.-% of further additives and/or processing aids;