GB615606A - New azo dyestuffs - Google Patents
New azo dyestuffsInfo
- Publication number
- GB615606A GB615606A GB3802246A GB3802246A GB615606A GB 615606 A GB615606 A GB 615606A GB 3802246 A GB3802246 A GB 3802246A GB 3802246 A GB3802246 A GB 3802246A GB 615606 A GB615606 A GB 615606A
- Authority
- GB
- United Kingdom
- Prior art keywords
- naphthol
- amino
- specifications
- class
- iii
- 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
1 - Amino - 8 - naphthol - 3 : 6 - disulphon - amides, which carry one or two alkyl groups containing a total of 2, 3 or 4 carbon atoms on the nitrogen atom of each sulphonamide group, are obtained by reacting 1-acetylamino-8-naphthol-3 : 6-disulphochloride with the appropriate primary or secondary base, e.g. dimethylamine, diethylamine, ethylamine or isopropylamine, and then heating the product with dilute caustic soda solution to remove the acetyl group. Specifications 326,226, [Class 2 (iii)], and 347,288 are referred to.ALSO:Azo dyestuffs are manufactured by coupling in alkaline medium diazotized 4-nitro-2-aminophenol-6-sulphonic acid with a 1-amino-8-naphthol-3 : 6-disulphonamide which carries one or two alkyl groups containing a total of 2, 3 or 4 carbon atoms on the nitrogen atom of each sulphonamide group. The products dye wool in bluish-green shades by the after-chrome or metachrome process. Examples describe the use, as coupling components, of 1-amino-8-naphthol-3 : 6-di-(sulphondimethylamide), -di-(sulphondiethylamide), -di-(sulphonethylamide) and -di-(sulphonisopropylamide). Specifications 326,226, [Class 2 (iii)], and 347,288 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3802246A GB615606A (en) | 1946-12-30 | 1946-12-30 | New azo dyestuffs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3802246A GB615606A (en) | 1946-12-30 | 1946-12-30 | New azo dyestuffs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB615606A true GB615606A (en) | 1949-01-07 |
Family
ID=10400652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3802246A Expired GB615606A (en) | 1946-12-30 | 1946-12-30 | New azo dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB615606A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3287132A (en) * | 1962-09-24 | 1966-11-22 | Ilford Ltd | Silver dye bleach dyestuffs and their use in colour photography |
-
1946
- 1946-12-30 GB GB3802246A patent/GB615606A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3287132A (en) * | 1962-09-24 | 1966-11-22 | Ilford Ltd | Silver dye bleach dyestuffs and their use in colour photography |
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