Use Of Disazo Compounds For Color Filters
AssigneeClariant International Ltd.
InventorGerald ENGEL
Life of this patent
Estimating the term…
Abstract
Use of disazo compounds for color filters The invention relates to the use of compounds of 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.
Claims17
A method of for producing a color filter comprising the step of adding at least one compound of formula (I) to the color filter during manufacture of the color filter:
- 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.
A millbase containing 0.01 to 45 wt % of a compound of 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-C4alkoxy
- in the form of a dispersion in an organic solvent.
A bindered color dispersion containing 0.01 to 40 wt % of a compound of 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-C4alkoxy
- in the form of a dispersion in at least one organic solvent, at least one polymeric binder and optionally further auxiliaries.
Dependencies are inferred from the claim text.