Preparation and use of nanosize pigment compositions

Details Preparation and use of nanosize pigment compositions Preparation and use of nanosize pigment compositions

C - Chemistry, Metallurgy

09

B

C09B 67/20 (2006.01) C09B 67/14 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2505847

A mixture of an organic nanosize pigment comprising of from 50 to 99% by weight of the nanosize pigment and 1 to 50% by weight based of a low molecular weight polysulfonated hydrocarbon, in particular naphthalene mono- or disulfonic acid formaldehyde polymer, and its use as a particle growth and crystal phase director for the preparation of a direct pigmentary organic pigment or in pigment finishing.

L'invention a trait à un mélange à base d'un pigment organique de taille nanométrique, qui contient de 50 à 99 % poids dudit pigment de taille nanométrique, et de 1 à 50 % poids d'un hydrocarbure polysulfoné à faible poids moléculaire, en particulier un polymère de formaldéhyde acide naphtalène-monosulfonique ou disulfonique. L'invention se rapporte également à l'utilisation dudit mélange en tant qu'agent directeur de la croissance de particules et de la phase cristalline, pour la préparation d'un pigment organique pigmentaire direct ou dans la finition d'un pigment.

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