Reactive yellow ' -sulfatoethylsulfonyl phenylazo-4-(1-substituted phenyl-3-methyl-5-amino)-pyrazole dyes
Abstract
Abstract WHEREIN THE BENZENE NUCLEUS A means the same as above; and thereafter treating the resulting mono-azo dye having a hydroxy group as Y in the formula II with sulfuric acid to convert the Beta -hydroxyethyl sulfone group to Beta -sulfatoethylsulfonyl group, and may be used for dyeing fibers a bright yellow shade with excellent fastness to light and washing. WHEREIN EACH X1 and X2 mean the same as above and Y represents a hydroxy group or -OSO3H group with 1-substituted phenyl-3-methyl5-amino-pyrazole represented by the formula WHEREIN X1 and X2 can each represent hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a carboxyl group, or a sulfonic acid group, and the nucleus A has at least one sulfonic acid group, and may have other substituents, is prepared by coupling a diazotized amine represented by the formula A reactive yellow dye having the formula
Inventors
- 👤 Hiroshi Sugiyama
- 👤 Hideo Otsuka
- 👤 Masakuzu Yamamoto
- 👤 Takuo Ikeda
- 👤 Masami Okuno
Bibliographic Details
Claims Analysis
Total Claims: 9References Cited (Backward Citations)
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| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
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