Violet colorant for colour filters, inks for ink-jet,...

C - Chemistry – Metallurgy – 09 – B

Patent

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Details

C09B 67/22 (2006.01) C09D 11/00 (2006.01) G03F 7/00 (2006.01) G03G 9/09 (2006.01)

Patent

CA 2558505

The invention relates to the use of a pigment preparation comprising a) a dioxazine compound of formula (I) in the form of a base pigment (I) and b) a dioxazine compound of general formula (II) in the form of a pigment dispersing agent, wherein Q is an m-valence residue of the base pigment of formula (I), Y is a bridge forming group, X is, in particular a heterocycle and m is an integer value between 1 and 4. The inventive pigment preparation is used for colour filters inks for ink-jet, electrophotographic toners and developers and e-inks.

L'invention concerne l'utilisation d'une préparation pigmentaire, caractérisée en ce qu'elle comprend a) un composé dioxazine de formule (I) comme pigment de base (I) et, b) un composé dioxazine de formule générale (II) comme agent de dispersion de pigment, dans laquelle Q désigne un reste m-valent du pigment de base de formule (I), Y désigne un groupement formant un pont, X désigne en particulier un hétérocycle, et m est un nombre entier compris entre 1 et 4. La préparation pigmentaire est utilisée dans des filtres colorés, des encres pour jets d'encre, des toners électrophotographiques et des révélateurs et des encres électroniques.

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