abstract |
The invention relates to the use of compounds of the formula (I) for color filters wherein R 0 is C 1 -C 4 -alkyl, R 1 is H, C 1 -C 4 -alkyl, a sulfo group, -CO-NH- (C 1 -C 4 -alkyl), CN or (C 1 -C 4 -alkylene) sulfo, R 2 is H or C 1 -C 4 -alkyl, R 3 H, a sulfo group, C 1 -C 4 -alkyl, or C 1 -C 4 -alkoxy, R 4 is H, C 1 -C 4 -alkyl, or C 1 -C 4 -alkoxy, mean. |