C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/02 (2006.01) C08J 3/20 (2006.01) C08K 5/3475 (2006.01) C08K 5/3492 (2006.01) C09B 67/20 (2006.01) C09K 15/30 (2006.01)
Patent
CA 2420549
The instant invention relates to a polyolefin composition which comprises d) at least one organic pigment e) at least one statically hindered amine light stabilizer and f) as UV absorber a mixture of a 2-hydroxyphenyl benzotriazole and a 2-hydroxyphenyl-s-triazine. Further objects of the invention are a method for stabilizing pigmented polyolefins and the use of a UV- absorber mixture of a hydroxyphenyl benzotriazole with a hydroxyphenyl-s- triazine for the stabilization of pigmented polyolefins.
L'invention a trait à une formulation polyoléfinique comportant d) au moins un pigment organique; e) au moins un photostabilisant avec une amine à encombrement statique; f) un absorbeur UV constitué du mélange d'une 2-hydroxyphénylbenzotriazole et d'une 2-hydroxyphényl-s-triazine. L'invention concerne également une méthode permettant de stabiliser des polyoléfines pigmentées et l'utilisation d'un mélange absorbeur UV d'une hydroxyphénylbenzotriazole et d'une hydroxyphényl-s-triazine pour la stabilisation de polyoléfines pigmentées.
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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