Disazo compound and ink composition containing using the same

C - Chemistry – Metallurgy – 09 – B

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C09B 43/16 (2006.01) B41J 2/01 (2006.01) B41M 5/00 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2532327

[PROBLEMS] To provide an ink composition which, when applied as an ink-jet recording liquid to plain paper and processed glossy paper, assumes a bright yellow color and gives a print excellent in light resistance, gas resistance, and fastness to wetting. [MEANS FOR SOLVING PROBLEMS] Ink-jet printing with an ink-jet ink composition containing a disazo compound represented by the following formula (1) can give a bright yellow print excellent in light resistance, gas resistance, and fastness to wetting. [In the formula (1), X represents a specific diamine residue; and Y1 and Y2 each represents alkylamino substituted by sulfo and/or carboxy, phenoxy substituted by sulfo and/or carboxy, or anilino substituted by sulfo and/or carboxy.]

PROBLEME: produire une encre pour jets d'encre qui appliqué sur du papier normal lisse donne une couleur jaune donnant une impression résistant à la lumière et aux gaz et à mouillage rapide. SOLUTION: obtention d'une encre comprenant un composé disazo de formule (I) donnant une impression résistant à la lumière et aux gaz et à mouillage rapide. Dans la formule (I), X représente un résidu spécifique de diamine; Y¿1? et Y¿2? représentent chacun alkylamino substitué par sulfo et/ou carboxy, phénoxy substitués par sulfo et/ou carboxy ou anilino substitués par sulfo et/ou carboxy.

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