Yellow-reactive monoazo dyes containing a tertiary or a quarternary nitrogen group, methods for their preparation and use thereof for dyeing hydroxy-and/or carboxamido-containing fiber material
US6624291B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Aug 14, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/4413
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Monoazo dyestuffs of the formula (1) whereinY is vinyl or is ethyl which is substituted in the &bgr;-position by a substituent which can be eliminated by the action of an alkali, forming the vinyl group;M, X, are groups customary to dyestuffs,R1, R2 is hydrogen methyl, methoxy or sulfo;Q is cyanamido or is a group of the formula (a) or (b): A, B, D are hydrogen, optionally substituted C1-C6 alkyl or phenyl, or is alternately a group of the formula (a) or (b) wherein (a) is a cyclic ring system having a tertiary nitrogen of (b) is a cyclic having a quarternary nitrogen;n is 0 if Q is a group of the formula (a) and n is 1 if Q is a group of formula (b);W— is a halogenide or the equivalent of a divalent anionic group;The invention further relates to the method for preparing the dyestuff and use for dyeing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.