C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
C09C 1/64 (2006.01) A61Q 1/02 (2006.01) C09B 63/00 (2006.01) C09B 69/00 (2006.01) C09C 1/00 (2006.01) C09C 1/62 (2006.01) C09C 3/08 (2006.01) C09D 5/36 (2006.01) C09D 11/00 (2006.01) C09D 11/02 (2006.01)
Patent
CA 2497211
The present invention relates to a method of producing coloured carrier particles (substrates), which comprises a) dispersing the carrier particles in a solution of a colorant or latent pigment, adding the carrier particles to a solution of a colorant or latent pigment, or adding a latent pigment or a colorant to a dispersion of the carrier particles, b) precipitating the colorant or latent pigment onto the carrier particles, and c) in the case of a latent pigment, subsequently converting it to the pigment, and to the coloured substrates obtainable by such a method, and also to the use thereof. Using the methods according to the invention it is possible to obtain colorations and coloured substrates that have surprisingly good light-fastness properties.
La présente invention concerne un procédé de production de particules de support colorées (substrats) qui consiste à a) disperser les particules de support dans une solution d'un colorant ou d'un pigment latent, ajouter les particules de support à une solution d'un colorant ou d'un pigment latent ou ajouter un pigment latent ou un colorant à une dispersion des particules de support, b) précipiter le colorant ou le pigment latent sur les particules de support, et c) dans le cas d'un pigment latent, le convertir ensuite en pigment. Cette invention a aussi trait aux substrats colorés qu'on peut obtenir par un tel procédé et leur utilisation. Au moyen des procédés de ladite invention, on peut obtenir des colorations et des substrats colorés qui possèdent d'étonnamment bonnes propriétés de solidité à la lumière.
Bauer Didier
Mueller Martin
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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