Dyes, inks and their use in ink-jet printing
AssigneeAvecia Limited
InventorsPaul Wight, Prakash Patel
Life of this patent
Estimating the term…
Abstract
A compound of the Formula (1) and salts thereof: 1 wherein: D is the residue of a mono-azo chromophore; Z is an optionally substituted nitrogen containing heterocyclic group; R1 is H or optionally substituted alkyl; the dyes of Formula (1) being free from fiber reactive groups; provided that the compound of Formula (1) is other than the compound of Formula (A): 2 Also claimed are compositions and inks containing a compound of Formula (1), a process for ink jet printing using the inks and to an ink jet printer cartridge containing the ink.
Claims13
A monoazo compound of the Formula (1) and salts thereof:
- 20
- wherein:
- D Is the residue of a mono-azo chromophore;
- Z is an optionally substituted nitrogen containing heterocyclic group;
- R1 is h or optionally substituted alkyl;
- the dyes of formula (1) being free from fibre reactive groups;
- provided that the compound of formula (1) is other than the compound of formula (a):
- 21
A compound according to any one of the preceding claims wherein the compound of Formula (1) is of the Formula (6) or a salt thereof:
- 22
- wherein:
- Ar1 is optionally substituted phenyl or optionally substituted naphthyl;
- Z1 is an optionally substituted nitrogen containing heterocylic group which is attached to the triazine ring by a bond to a nitrogen atom in the heterocyclic group;
- R2 is H or C1-4-alkyl optionally substituted by —OH, —COOH or —SO3H;
- and
- t is 0 or 1.
A composition comprising:
- (a) one or more compound according to any one of the preceding claims;
- and
- (b) one or more water-soluble magenta dye other than a compound according to any one of the preceding claims.
A dye substantially as herein described with reference to any one of the examples.
An ink substantially as herein described with reference to any of the examples.
Dependencies are inferred from the claim text.