GB347290A - Process for the manufacture of azo dyestuffs containing chromium - Google Patents
Process for the manufacture of azo dyestuffs containing chromiumInfo
- Publication number
- GB347290A GB347290A GB282330A GB282330A GB347290A GB 347290 A GB347290 A GB 347290A GB 282330 A GB282330 A GB 282330A GB 282330 A GB282330 A GB 282330A GB 347290 A GB347290 A GB 347290A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chromium
- diazotized
- product
- coupled
- dyes
- 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 dyes and soluble chromium compounds thereof; pyrazolones.-Certain of the dyestuffs containing chromium described in the parent Specification are obtained by first converting the pyrazolones from the aminoarylsalicylsulphones into their chromium compounds by treatment with agents yielding chromium and thereafter coupling with aromatic diazo compounds containing no hydroxy group in o-position to the diazotized amino group. The following examples are specified: (1) The 3-methylpyrazolone, obtainable from 21-hydrazino-411-oxy-311-carboxydiphenylsulphone -41-sulphonic acid and acetoacetic ester is boiled for 2 hours under reflux with an aqueous solution of chromium formate, and the product is coupled in sodium acetate solution with diazotized 2-chloro-4-aminotoluene; the product dyes wool from an acid bath an even clear greenish yellow shade fast to light, fulling, perspiration, carbonization, and steaming; (2) The 3-methylpyrazolone obtainable from 21-hydrazino-211-oxy-311-carboxy - 511-methyldiphenylsulphone-41-sulphonic acid and acetoacetic ester is converted into the chromium compound as in (1), and the product is coupled in sodium acetate solution with diazotized 2-aminotoluene or with diazotized 2-aminobenzoic acid; the products give on wool yellow dyeings similar to those in (1). Chromed pyrazolone-3-carboxylic acids and esters thereof derived from aminoarylsalicylsulphones may be similarly coupled. Specification 245,765, [Class 2 (iii), Dyes &c.], is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB282330A GB347290A (en) | 1930-01-27 | 1930-01-27 | Process for the manufacture of azo dyestuffs containing chromium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB282330A GB347290A (en) | 1930-01-27 | 1930-01-27 | Process for the manufacture of azo dyestuffs containing chromium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB347290A true GB347290A (en) | 1931-04-27 |
Family
ID=9746606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB282330A Expired GB347290A (en) | 1930-01-27 | 1930-01-27 | Process for the manufacture of azo dyestuffs containing chromium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB347290A (en) |
-
1930
- 1930-01-27 GB GB282330A patent/GB347290A/en not_active Expired
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