Disazo acid dyes
View Patent ↗Compounds of the general formula (I) a process for their preparation and their use for dyeing and/or printing organic substrates.
1. A compound of the general formula (I)
wherein
R 1 , R 2 , R 9 and R 10 are independently selected from the group consisting of: unsubstituted unbranched C 1-6 alkyl, unsubstituted branched C 3-6 alkyl, substituted unbranched C 1-6 alkyl, substituted branched C 3-6 alkyl, aryl, and —(CH 2 ) p -aryl wherein p=1, 2, 3 or 4,
R 3 and R 8 is selected from the group consisting of: hydrogen, unsubstituted unbranched C 1-6 alkyl, unsubstituted branched C 3-6 alkyl, substituted unbranched C 1-6 alkyl, substituted branched C 3-6 alkyl, unsubstituted unbranched C 1-6 alkoxy, unsubstituted branched C 3-6 alkoxy, substituted unbranched C 1-6 alkoxy, substituted branched C 3-6 alkoxy, halogen, —NHCO—(C 1-6 alkyl) with an unbranched C 1-6 alkyl group, which is substituted or unsubstituted, —NHCO—(C 3-6 alkyl) with a branched C 3-6 alkyl group, which is substituted or unsubstituted, and —NHCONH 2 ,
BR is a bridge of the formula -A-B-A- wherein
A is selected from the group consisting of: substituted phenyl, substituted naphthyl, unsubstituted phenyl, and unsubstituted naphthyl, and
B is a bridging sulphon,
the compound of the formula (I) contains 1, 2 or 3 sulpho groups and wherein there are no anionic groups in the bridging member BR.
2. A compound according to claim 1 wherein the compound of the formula (I) contains 2 sulpho groups.
3. A compound according to claim 1 wherein the bridge B is selected from the group consisting of:
wherein
R 4 , R 4′ , R 5 , R 5′ are independently selected from the group consisting of: hydrogen, unsubstituted unbranched C 1-6 alkyl, unsubstituted branched C 3-6 alkyl, substituted unbranched C 1-6 alkyl, substituted branched C 3-6 alkyl, unsubstituted unbranched C 1-6 alkoxy, unsubstituted branched C 3-6 alkoxy, substituted unbranched C 1-6 alkoxy, substituted branched C 3-6 alkoxl,, halogen, —NHCO—(C 3-6 alkyl) with an unbranched C 1-6 alkyl group, which is substituted or unsubstituted, —NHCO—(C 3-6 alkyl) with a branched C 3-6 alkyl group, which is substituted or unsubstituted, and —NHCONH 2 .
4. A process for dyeing and/or printing an organic substrate comprising the step of contacting at least one compound of the formula (I) according to claim 1 with the organic substrate.
5. A process for dyeing and/or printing a substrate comprising wool, silk andor synthetic polyamide comprising the step of contacting at least one compound of formula (I) according to claim 1 with the substrate comprising wool, silk and/or synthetic polyamide.
6. An inkjet printing ink, comprising at least one compound of formula (I) according to claim 1 .
7. A printing ink, comprising at least one compound of formula (I) according to claim 1 .