Colored metallic pigment and preparation thereof

Details Colored metallic pigment and preparation thereof Colored metallic pigment and preparation thereof

C - Chemistry, Metallurgy

09

C

C09C 1/62 (2006.01) C08K 9/04 (2006.01) C09B 47/08 (2006.01) C09B 48/00 (2006.01) C09B 57/00 (2006.01) C09B 63/00 (2006.01) C09B 67/22 (2006.01) C09C 3/08 (2006.01)

Patent

CA 2188216

The instant invention relates to a process for the production of colored metallic pigments, as well as these colored metallic pigments themselves, their use to color high molecular weight organic material in the mass and compositions or masterbatches containing them. The colored metallic pigment consists essentially of multiple loose particles of 0.1-1000 µm size each, said particles comprising a core of a transition metals, half metal or alloy, preferably an aluminum flake, and a very fine, substantially continuous, uniform and homogeneous layer of organic pigment particles which is directly in contact with the metallic core. The core may be superficially oxidized. The colored metallic pigment is prepared by a vacuum deposition process, said process being performed in an apparatus constructed, modified or charged in such a way that the organic pigment gas flows in direction of the metallic core.

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