Mono-azo dyes and inks for ink-jet printing
US6514329B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jun 5, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B43/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A mono-azo compound of Formula (1) or a salt thereof: wherein:A is N, C—Cl, C—CN or C—NO2;R1 is H or optionally substituted alkyl;G is H, sulpho, carboxy, optionally substituted alkyl, optionally substituted alkoxy, —CF3, halo or —PO3H2;L1 and L2 each independently is —SR2, —OR3 or —NR4R5;R2, R3, R4 and R5 each independently is H, optionally substituted alkyl or optionally substituted aryl; orR4 and R5 together with the nitrogen to which they are attached form an optionally substituted five or six membered ring;provided that L1 and L2 are free from carboxy, sulpho and —PO3H2 groups; and the use of a mono-azo compound of Formula (1) or a salt thereof in inks, an ink jet printing process using the inks, a substrate printed with the inks and an ink jet printer cartridge containing the inks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.