C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/315 (2006.01) C08K 5/3445 (2006.01)
Patent
CA 2457247
The present invention relates to a method of producing coloured plastics or coloured polymeric particles which comprises using a dye of formula (1), wherein R1 is a radical of formula (2) or of formula (3), wherein R2 is hydrogen or C1-C4alkyl, and R3 is hydrogen or C1-C4alkyl, and/or a dye of formula (4) and a UV absorber.
La présente invention concerne un procédé de fabrication de plastiques colorés ou de particules polymères colorées qui consiste à utiliser un colorant ayant la formule (1), dans laquelle R¿1? est un radical de la formule (2) ou de la formule (3), dans lesquelles R¿2? est hydrogène ou alkyle C¿1?-C¿4?, et R¿3? est hydrogène ou alkyle C¿1?-C¿4?, et/ou un colorant correspondant à la formule (4) ainsi qu'un absorbant de rayons U.V.
Christensen Ian
Morvillier Marie-Raphael
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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