Stabilized thermoplastic moulding materials

A thermoplastic molding composition comprising, based on components A) to F),

• A) from 5 to 70% by weight of at least one graft copolymer A) made from, based on A),
• a1) from 10 to 90% by weight of at least one elastomeric graft base with a glass transition temperature below 0° C., and
• b2) from 10 to 90% by weight of at least one graft made from, based on a2),
• a21) from 50 to 100% by weight of at least one styrene compound,
• a22) from 0 to 50% by weight of acrylonitrile or methacrylonitrile, or a mixture of these, and
• a23) from 0 to 50% by weight of at least one other monoethylenically unsaturated monomer,
• B) from 29 to 90% by weight of a hard copolymer made from, based on B),
• b1) from 50 to 100% by weight of at least one styrene compound,
• b2) from 0 to 50% by weight of acrylonitrile or methacrylonitrile, or a mixture of these, and
• b3) from 0 to 50% by weight of at least one other monoethylenically unsaturated monomer,
• C) from 0 to 5% by weight of at least one three-block copolymer X-Y-X having a central block Y made from propylene oxide units and having terminal blocks X made from ethylene oxide units,
• D) from 0.01 to 5% by weight of at least one butylated reaction product of p-cresol with dicyclopentadiene of the formula (I)
• 4
• where n≦10,
• E) from 0.01 to 5% by weight of at least one thiocarboxylic ester,
• F) from 0.01 to 5% by weight of at least one alkali metal salt or alkaline earth metal salt of a C6-C20 carboxylic acid, and
• G) from 0 to 30% by weight, based on components A) to G), of other conventional additives,
• where the weathered db* value of the molding compositions is below +5.0 after 100 hours of exposure to light and weathering to ISO 4892/2, method A, black-panel temperature 65° C., using the CIE-Lab color system, to DIN 6174 and DIN 5033.