Multilayer interference pigment with absorbent central layer

Details Multilayer interference pigment with absorbent central layer Multilayer interference pigment with absorbent central layer

C - Chemistry, Metallurgy

09

C

C09C 3/00 (2006.01) C08K 3/00 (2006.01) C09C 1/00 (2006.01) C09D 5/36 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2253715

The invention concerns a multilayer interference pigment consisting of a central absorbent layer and alternating layers of a material with a low refraction coefficient and a metal or material with a high refraction coefficient on both sides of the central layer. The material with a low refraction coefficient is preferably acrylate and the metal is aluminium or chromium. The absorbent layer consists of a paint system which contains carbon black or chromophoric absorption pigments.

L'invention concerne un pigment d'interférence à couches multiples comprenant une couche centrale absorbante et des couches alternées d'un matériau à faible indice de réfraction et d'un métal ou d'un matériau à haut indice de réfraction, situées de part et d'autre de la couche centrale. Le matériau à faible indice de réfraction est de préférence de l'acrylate et le métal est de l'aluminium ou du chrome. La couche absorbante consiste en un système de peinture contenant du noir de carbone ou des pigments d'absorption chromophores.

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