Monoazo dyes useful in ink compositions for printing on substrates by ink-jet printing
US5755862A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1997 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Apr 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/091
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink composition comprising PA0 (i) a medium comprising a mixture of water and one or more water-soluble organic solvent(s), an organic solvent, or a low melting point solid; and PA0 (ii) a dye of Formula (1) or salt thereof: ##STR1## wherein: each X.sup.1 independently is a labile or non-labile substituent; PA1 each T independently is --O--, --S-- or --NR.sup.1 --; PA1 each L.sup.1 independently is a divalent organic linker group; PA1 each V.sup.1 independently is a group which is capable of undergoing an addition reaction or an elimination and addition reaction; PA1 each R.sup.1 independently is H or optionally substituted alkyl; PA1 Z is the residue of a coupling component; and PA1 m and n are each independently 0 or 1. Also claimed is a composition comprising the ink and a nucleophilic agent; a process for ink jet printing of a substrate wherein the ink is applied to the substrate using an ink jet printer together with a nucelophilic agent and heating and/or basifying the ink and nucelophilic agent thereby causing the dye present in the ink and the nucleophilic agent to react together; and a toner resin composition comprising a toner resin and a dye of Formula (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.