Multilayer interference pigment with transparent central layer

Details Multilayer interference pigment with transparent central layer Multilayer interference pigment with transparent 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 2253716

The invention concerns a multilayer interference pigment consisting of a central layer of a transparent or semi-transparent material with a low refraction coefficient and alternating layers of a metal or a material with a high refraction coefficient and a material with a low refraction coefficient on both sides of the central layer. The material with a low refraction coefficient is preferably magnesium fluoride or acrylate and the metal is preferably aluminium or chromium.

L'invention concerne un pigment d'interférence à couches multiples comprenant une couche centrale réalisée dans un matériau transparent ou semi-transparent à faible indice de réfraction, ainsi que des couches alternées d'un métal ou d'un matériau à haut indice de réfraction et d'un matériau à faible indice de réfraction, situées de part et d'autre de la couche centrale. Le matériau à faible indice de réfraction est de préférence du fluorure de magnésium ou de l'acrylate et le métal est de préférence de l'aluminium ou du chrome.

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