Thermoplastic molding composition comprising components a, b, c and d: (a) 50 to 80 wt.-% of at least one copolymer (a) of styrene and acrylonitrile in a weight ratio of from 78:22 to 65:35, it being possible for styrene and/or acrylonitrile to be partially (less than 50 wt.-%) replaced by methyl methacrylate, maleic anhydride, N-phenylmaleimide and/or 4-phenylstyrene; wherein copolymer (a) has a weight average molar mass M w of 80,000 to 250,000 g/mol; (b) 8 to 25 wt.-% of at least one graft copolymer (b) 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, maleic anhydride or N-phenylmaleimide 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-b1) having a median weight particle diameter D 50 of equal to or less than 120 nm, preferably equal to or less than 110 nm; (c) 8 to 30 wt.-% of at least one coupled conjugated diene/monovinylarene block copolymer (c) comprising one or more conjugated diene/monovinylarene tapered polymer blocks, where - in the final block copolymer - all conjugated diene is incorporated into the tapered polymer block, and - based on the total weight of the final block copolymer - the monovinylarene is present in an amount of 58 to 68 wt.-%, preferably 61 to 64 wt.-%, and the conjugated diene is present in an amount of 32 to 42 wt.-%, preferably 36 to 39 wt.-%; and (d) 0 to 5 wt.-% of further additives and/or processing aids (d); where the components a, b, c, and, if present d, sum to 100 wt.-%. (a) 50 to 80 wt.-% of at least one copolymer (a) of styrene and acrylonitrile in a weight ratio of from 78:22 to 65:35, it being possible for styrene and/or acrylonitrile to be partially (less than 50 wt.-%) replaced by methyl methacrylate, maleic anhydride, N-phenylmaleimide and/or 4-phenylstyrene; wherein copolymer (a) has a weight average molar mass M w of 80,000 to 250,000 g/mol; (b) 8 to 25 wt.-% of at least one graft copolymer (b) 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, maleic anhydride or N-phenylmaleimide 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-b1) having a median weight particle diameter D 50 of equal to or less than 120 nm, preferably equal to or less than 110 nm; (c) 8 to 30 wt.-% of at least one coupled conjugated diene/monovinylarene block copolymer (c) comprising one or more conjugated diene/monovinylarene tapered polymer blocks, where - in the final block copolymer - all conjugated diene is incorporated into the tapered polymer block, and - based on the total weight of the final block copolymer - the monovinylarene is present in an amount of 58 to 68 wt.-%, preferably 61 to 64 wt.-%, and the conjugated diene is present in an amount of 32 to 42 wt.-%, preferably 36 to 39 wt.-%; and (d) 0 to 5 wt.-% of further additives and/or processing aids (d);