Thermoplastic molding composition comprising components A, B, C, D and E 30 to 40 wt.-% of at least one graft copolymer consisting of 15 to 60 wt.-%, preferably 20 to 50 wt.-% of a graft sheath and 40 to 85 wt.-%, preferably 50 to 80 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 50:50 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 200 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, with at least one acid anhydride, preferably acetic anhydride or mixtures of acetic anhydride with acetic acid, in particular acetic anhydride; 25 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; 30 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; 0.05 to 0.50 wt.-% of at least one homo- or copolymer comprising structure units derived from at least one monomer with at least one C 3 -C 6 -alkyleneoxide side chain which epoxy group is the terminal group, or structure units derived from at least one monomer with at least one modified C 3 -C 6 -alkyleneoxide side chain having an ester, ether, carbonate, carbamate, hydroxyl, or acrylate terminal group which group has been formed by reaction with the terminal epoxy group of the C 3 -C 6 -alkyleneoxide; 0 to 5 wt.-% of further additives and/or processing aids; where the components A, B, C, D and, if present E, sum to 100 wt.-%. 30 to 40 wt.-% of at least one graft copolymer consisting of 15 to 60 wt.-%, preferably 20 to 50 wt.-% of a graft sheath and 40 to 85 wt.-%, preferably 50 to 80 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 50:50 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 200 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, with at least one acid anhydride, preferably acetic anhydride or mixtures of acetic anhydride with acetic acid, in particular acetic anhydride; 25 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; 30 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; 0.05 to 0.50 wt.-% of at least one homo- or copolymer comprising structure units derived from at least one monomer with at least one C 3 -C 6 -alkyleneoxide side chain which epoxy group is the terminal group, or structure units derived from at least one monomer with at least one modified C 3 -C 6 -alkyleneoxide side chain having an ester, ether, carbonate, carbamate, hydroxyl, or acrylate terminal group which group has been formed by reaction with the terminal epoxy group of the C 3 -C 6 -alkyleneoxide; 0 to 5 wt.-% of further additives and/or processing aids; where the components A, B, C, D and, if present E, sum to 100 wt.-%.