GB210890A - Manufacture of azo-dyestuffs and chromium compounds thereof - Google Patents
Manufacture of azo-dyestuffs and chromium compounds thereofInfo
- Publication number
- GB210890A GB210890A GB3092322A GB3092322A GB210890A GB 210890 A GB210890 A GB 210890A GB 3092322 A GB3092322 A GB 3092322A GB 3092322 A GB3092322 A GB 3092322A GB 210890 A GB210890 A GB 210890A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthylamine
- sulphonic acid
- chromium
- aminophenol
- diazo
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
o-Amino-o-oxyazo dyes are prepared by coupling an o-diazo-phenol not containing a nitro group, with a naphthylamine or a derivative or substitution product which is capable of orthocoupling and which contains no hydroxyl group or further amino group; the same products are obtained by converting the diazo components into O-acidyl derivatives, diazotizing and coupling, and then saponifying. The products dye wool in orange shades changed to green by after-chroming and to bluish-red to bordeaux by after-coppering; by treatment with agents yielding chromium the dyestuffs yield chromium compounds which dye wool in fast green tints. According to examples (1) 2-diazo-1-phenol-4-sulphonic acid is coupled with b -naphthylamine hydrochloride, and the double compound of the dyestuff with b -naphthylamine decomposed with caustic soda; the same dyestuff is obtained by coupling 2 - diazo - 1-phenol-p-toluenesulphonic-ester-4-sulphonic acid with b -naphthylamine and saponifying; it is converted into a chromium compound by boiling with chromium formate; (2) diazotized 4-chlor-2-aminophenol-5-sulphonic acid is coupled with 1-naphthylamine-4-sulphonic acid and the product boiled with hydrated chromium oxide, filtered and evaporated. Dyestuffs from the following pairs of compounds are also described:-4-chloro-2-aminophenol and 2-naphthylamine-6-sulphonic acid or 5 : 7-disulphonic acid; 4-chlor-2-aminophenol-5-sulphonic acid and b -naphthylamine or its o -methane-sulphonic acid; 4-methyl-2-aminophenol-5-sulphonic acid and b -naphthylamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3092322A GB210890A (en) | 1922-11-11 | 1922-11-11 | Manufacture of azo-dyestuffs and chromium compounds thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3092322A GB210890A (en) | 1922-11-11 | 1922-11-11 | Manufacture of azo-dyestuffs and chromium compounds thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB210890A true GB210890A (en) | 1924-02-11 |
Family
ID=10315193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3092322A Expired GB210890A (en) | 1922-11-11 | 1922-11-11 | Manufacture of azo-dyestuffs and chromium compounds thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB210890A (en) |
-
1922
- 1922-11-11 GB GB3092322A patent/GB210890A/en not_active Expired
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