| abstract |
A) 40 bis 80 Gew.-% mindestens eines thermoplastischen Polyurethans, B) 10 bis 30 Gew.-% 1,3,5-Triglycidylisocyanurat und C) 10 bis 30 Gew.-% 2-(2-Hydroxy-3,5-di-tert.amyl-phenyl)-2H-benztriazol und/oder 1,6-Hexandiyl-bis(3-((3-benzotriazol-N-yl)-4-hydroxy-5-tert.butyl)phenyl-propanoat, ein Verfahren zu ihrer Herstellung und ihre Verwendung zur Stabilisierung von TPU gegen UV- und thermischen Abbau.The invention relates to UV stabilizer concentrates which, based on the total weight, consist of A) 40 to 80% by weight of at least one thermoplastic polyurethane, B) 10 to 30 wt .-% 1,3,5-triglycidyl isocyanurate and C) 10 to 30% by weight of 2- (2-hydroxy-3,5-di-tert.amylphenyl) -2H-benzotriazole and / or 1,6-hexanediylbis (3 - ((3-benzotriazole -N-yl) -4-hydroxy-5-tert-butyl) phenyl propanoate, a process for their preparation and their use for stabilizing TPU against UV and thermal degradation. |