Monoazo dyestuffs, a composition and an ink for ink jet printing comprising them
US6488752B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Aug 28, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of Formula (1) and salts and tautomers thereof, inks containing a compound of Formula (1), an ink jet printing process using the inks, substrates printed with the inks and ink jet printer cartridges containing the inks: wherein:R1 and R2 each independently is H, optionally substituted alkyl, optionally substituted aryl or optionally substituted arylalkyl;each W and each X independently is —COOH, —SO3H, —PO3H2 or alkyl substituted by one or more groups selected from —COOH, —SO3H and —PO3H2;each Y and each Z independently is a substituent other than those defined for W and X;a and d each independently is 1 to 5;b and c each independently is 0 to 4;(a+b) has a value of 5 or less; and(c+d) has a value of 5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.