GB458828A - Manufacture of monoazo-dyestuffs - Google Patents
Manufacture of monoazo-dyestuffsInfo
- Publication number
- GB458828A GB458828A GB18576/35A GB1857635A GB458828A GB 458828 A GB458828 A GB 458828A GB 18576/35 A GB18576/35 A GB 18576/35A GB 1857635 A GB1857635 A GB 1857635A GB 458828 A GB458828 A GB 458828A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxybenzene
- nitro
- amino
- methyl
- pyrazolone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Azo dyestuffs, capable of being chromed, are manufactured by diazotizing 2-amino-1-oxybenzene or a non-sulphonated substitution product thereof and coupling with a 3-alkylpyrazolone of the general formula <FORM:0458828/IV/1> where R and R<1> are benzene nuclei free from sulpho-groups but containing any other desired substituents and one of them containing a carboxy-group, and Z represents --O--, --CO--, or --SO2NH-- where S is connected directly to R. Examples describe the manufacture of the following dyestuffs: (1) 6-nitro-2-amino-4-methyl-1-oxybenzene --> 1-(4<1>-chlorophenyl-3<1>-sulphanilide-2<11> -carboxylic acid)-3-methyl-5-pyrazolone; the product yields red dyeings by the one-bath chrome process; the coupling component may be replaced by the 3<11>- or 4<11>-carboxylic acid; (2) 5-nitro-2-amino-1-oxybenzene --> 1-(phenyl-3<1>-sulphanilide-2<11>-carboxylic acid)-3-methyl-5-pyrazolone; the product yields more bluish red dyeings than do those of (1); (3) the diazo-component of (1) is replaced by 4-nitro-2-amino-6-methyl-1-oxybenzene (the product yielding more yellowish dyeings), or by 6-chloro-4-nitro-, 6-nitro-4-chloro- or 4-chloro-2-amino-1-oxybenzene; (4) 5-nitro-2-amino-1-oxybenzene --> 1-(2<1>-(4<11>-chlorophenoxy)-5<1>-carboxyphenyl) -3-methyl-5-pyrazolone; the product yields bluish-red dyeings on wool by the one-bath chrome process; (5) 6-nitro-2-amino-4-methyl-1-oxybenzene --> 1-(2<1>-phenoxy-3<1>-carboxyphenyl)-3-methyl-5-pyrazolone (red dyeings); (6) 6-chloro-4-nitro-2-amino-1-oxybenzene --> 1-(4<1>-phenoxy-3<1>-carboxyphenyl)-3-methyl-5-pyrazolone (orange dyeings); (7) 6-nitro-2-amino-4-methyl-1-oxybenzene --> the pyrazolone of the formula <FORM:0458828/IV/2> The Specification as open to inspection under Sect. 91 comprises also the use, as coupling components, of pyrazolones of the general formula given above in which Z is --SO<2>N--alkyl-- or --SO2N--oxyalkyl--, S being directly linked to R. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE458828X | 1934-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB458828A true GB458828A (en) | 1936-12-28 |
Family
ID=6539491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18576/35A Expired GB458828A (en) | 1934-06-29 | 1935-06-28 | Manufacture of monoazo-dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB458828A (en) |
-
1935
- 1935-06-28 GB GB18576/35A patent/GB458828A/en not_active Expired
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