Monoazo compounds derived from 2-hydroxymethyl-amino benzoic acids and 2,6-dihydroxypyridines
US3936437A · kind A · utility
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2Claims
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Key dates
| Filing date | Dec 17, 1973 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | Dec 17, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/3626
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The disperse monoazo dyestuffs, free from sulphonic acid groups, which are represented by the formula: ##SPC1## Wherein X is alkyl, substituted alkyl, phenyl or optionally substituted carbamoyl; Y is a hydrogen atom or a substituent; and Z is a hydrogen atom or an optionally substituted alkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group, a process for the manufacture of the said dyestuffs and their use for coloring synthetic textile materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.