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US 6,635,747 B2Granted
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: 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): 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.
Claims17
A monoazo compound of the Formula (1) and salts thereof:
- 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):
3 more elements
Dependencies are inferred from the claim text.