Colored metallic pigments

Details Colored metallic pigments Colored metallic pigments

C - Chemistry, Metallurgy

09

B

117/46.1

C09B 67/08 (2006.01) C08F 2/44 (2006.01) C08F 292/00 (2006.01) C09B 63/00 (2006.01) C09B 67/22 (2006.01) C09C 1/62 (2006.01) C09C 1/64 (2006.01) C09C 3/00 (2006.01)

Patent

CA 2180268

A colored metallic pigment composition includes metallic particles which have been treated with a mixture of pigment particles and wax. A polymeric shell is formed on the treated metal particles by means of an organometallic coupling agent. The coupling agent includes a readily-hydrolyzable group which is capable of binding to the metal particle surface, and a relatively non-hydrolyzable group which serves as a binding site for the polymeric shell.

Cette invention se rapporte à une composition de pigment métallique coloré qui renferme des particules métalliques ayant été traitées avec un mélange constitué par la cire et par des particules de pigment. Une enveloppe polymère est formée sur les particules métalliques ainsi traitées, au moyen d'un agent de couplage organométallique. Cet agent de couplage contient un groupe facilement hydrolisable, qui est capable de se lier à la surface des particules métalliques, ainsi qu'un groupe relativement non hydrolisable, qui sert de site de liaison pour l'enveloppe polymère.

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