Composition Comprising Disazo Dyes And Pigments
AssigneeClariant International Ltd.
InventorsGerald ENGEL, Joachim EICHHORN, Yvonne KAHLE, Andreas ENDRES, Marcus GIESLER
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Abstract
The invention relates to a colorant composition comprising at least one compound of the formula (I) where R0 is C1-C4 alkyl, R1 is H, C1-C4 alkyl, a sulfo group, —CO—NH—(C1-C4 alkyl), CN, or (C1-C4-alkylene)sulfo, R2 is H or C1-C4 alkyl, R3 is H, a sulfo group, C1-C4 alkyl, or C1-C4 alkoxy, R4 is H, C1-C4 alkyl, or C1-C4 alkoxy; and at least one organic pigment. The colorant compositions are suitable especially for color filters.
Claims15
A colorant composition comprising at least one compound of the formula (I)
- wherein
- R0 is C1-C4 alkyl,
- R1 is H, C1-C4 alkyl, a sulfo group, —CO—NH—(C1-C4 alkyl), CN, or (C1-C4-alkylene)sulfo,
- R2 is H or C1-C4 alkyl,
- R3 is H, a sulfo group, C1-C4 alkyl, or C1-C4 alkoxy,
- R4 is H, C1-C4 alkyl, or C1-C4 alkoxy;
- and at least one organic pigment.
A method for producing a colorant composition as comprising the step of combining with one another the at least one compound of the formula (I) and at least one organic pigment
- wherein
- R0 is C1-C4 alkyl,
- R1 is H, C1-C4 alkyl, a sulfo group, —CO—NH—(C1-C4 alkyl), CN, or (C1-C4-alkylene)sulfo,
- R2 is H or C1-C4 alkyl,
- R3 is H, a sulfo group, C1-C4 alkyl, or C1-C4 alkoxy, and
- R4 is H, C1-C4 alkyl, or C1-C4 alkoxy.
Dependencies are inferred from the claim text.