Trisazo dyes for ink jet printing
View Patent ↗A composition comprising a liquid medium and a compound of Formula (1) or salt thereof: wherein: A is 2-sulpho-4-methoxyphenyl; B is optionally substituted phenylene or naphthylene; n is 0 or 1; and D is a pyrazolonyl group; wherein the liquid medium comprises an organic solvent, inks comprising this composition and printing processes.
1. A composition comprising a liquid medium and a compound of Formula (1) or salt thereof:
wherein:
A is 2-sulpho-4-methoxyphenyl;
B is optionally substituted phenylene or naphthylene;
n is 0 or 1; and
D is a pyrazolonyl group;
wherein the liquid medium comprises an organic solvent.
2. A composition according to claim 1 wherein D is a pyrazolonyl group carrying at least one carboxy, sulpho or phosphato group.
3. A composition according to either claim 1 or claim 2 which contains a further colorant selected from the group consisting of black, magenta and yellow colorants and combinations thereof.
4. A composition according to claim 1 wherein:
B is phenylene or naphthylene carrying one or two substituents selected from the group consisting of sulpho, methyl, methoxy and 2-hydroxyethoxy;
n is 0 or 1;
D is of Formula (2a) or (2b);
R 1 is H, methyl or carboxy; and
R 2 and R 3 are each independently phenyl or phenyl carrying one or two substituents selected from the group consisting of sulpho and carboxy.
5. A compound of Formula (1) or salt thereof:
wherein:
A is 2-sulpho-4-methoxyphenyl;
B is optionally substituted phenylene or naphthylene;
n is 0 or 1; and
D is a pyrazolonyl group.
6. A compound according to claim 5 wherein
B is phenylene or naphthylene carrying one or two substituents selected from the group consisting of sulpho, methyl, methoxy and 2-hydroxyethoxy;
n is 0 or 1;
D is of Formula (2a) or (2b);
R 1 is H, methyl or carboxy; and
R 2 and R 3 are each independently phenyl or phenyl carrying one or two substituents selected from the group consisting of sulpho and carboxy.
7. A process for printing an image on a substrate comprising applying thereto a composition according to claim 1 by means of an ink jet printer.
8. A paper, an overhead projector slide or a textile material printed with a compound of Formula (1), or composition containing same, according to claim 1 .
9. An ink jet printer cartridge, optionally refillable, comprising one or more chambers and a composition, wherein the composition is present in at least one of the chambers and the composition is as defined in claim 1 .
10. A paper, an overhead projector slide or a textile material printed by a process according to claim 7 .