Metallized azo dyes and inks for ink-jet printing containing same
US6712890B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Jan 27, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B45/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water soluble compound of Formula (1) or a salt thereof:wherein:Y is an electron withdrawing group;Y1 is H, alkyl or aryl, OR or NR2 in which each R independently is H, optionally substituted alkyl or optionally substituted aryl;or Y and Y1 together form a 5- or 6- membered ring;X1 is a group or atom with co-ordinates with M;M is hexa co-ordinate metal;G is a group of Formula (2), (3) or (4); andL1, L2 and L3, each independently represent ligands required to complete hexa-coordinate geometry around metal M;wherein:S is a water solubilizing group;Ar is a benzene or naphthalene group in which X is located ortho to the azo group;X is a group or atom which co-ordinates with M;Z provides atoms or groups which complete an optionally substituted 5- or 6-membered aromatic heterocyclic ring;Ring A is an optionally substituted aromatic ring;Ring B is an optionally substituted 5- or 6-membered aromatic heterocyclic ring;n is 0, 1, 2 or 3; andthe * signify the points of attachment of the groups of Formulae (2), (3) and (4) to the N and M atoms in the compound of Formula (1).The compounds are used in compositions for ink jet printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.