A thermoplastic acrylate-styrene-acrylonitrile (ASA) copolymer composition for the production of moldings. The composition comprises:10-89.7% by weight of a copolymer A1 consisting of styrene and acrylonitrile,10-89.7% by weight of at least one graft copolymer A2 having an average particle size of 80-800 nm, consisting of a rubber-like base substance having Tg<0° C. and at least one graft shell,0.1-2% by weight of at least one sterically hindered amine B1,0-2% by weight of at least one sterically hindered amine B2,0-2% by weight of at least one UV-A absorber B3,0.1-3% by weight of at least one carbon black component CB, and0-5% by weight of one or more further additives C.The thermoplastic acrylate-styrene-acrylonitrile copolymer composition after the production of moldings results in at least one sterically hindered amine (B1, B2) being present on the surface of a molding after 500 h of artificial weathering in accordance with standard EN ISO 4892 in a higher amount than in a molding before the artificial weathering.
ASA-POLYMERZUSAMMENSETZUNG MIT OPTIMIERTER UV-STABILITÄT SOWIE GUTEM ZÄHIGKEITS-STEIFIGKEITS-VERHÄLTNIS
ASA POLYMER COMPOSITION WITH OPTIMISED UV STABILITY AND GOOD TOUGHNESS-STIFFNESS BALANCE
COMPOSITION DE POLYMÈRES ASA PRÉSENTANT UNE STABILITÉ OPTIMISÉE AUX UV ET UN BON ÉQUILIBRE TÉNACITÉ-RIGIDITÉ
2023-02-08
Patent
Elektronische Ressource
Deutsch
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
Europäisches Patentamt | 2021
|Steifigkeits- und Betriebsfestigkeitspruefung beim Hersteller
Kraftfahrwesen | 1984
|