GB282548A - New azo dyestuffs and their application - Google Patents
New azo dyestuffs and their applicationInfo
- Publication number
- GB282548A GB282548A GB3102126A GB3102126A GB282548A GB 282548 A GB282548 A GB 282548A GB 3102126 A GB3102126 A GB 3102126A GB 3102126 A GB3102126 A GB 3102126A GB 282548 A GB282548 A GB 282548A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- naphthylamine
- coupled
- benzidine
- nitraniline
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/38—Trisazo dyes ot the type
- C09B35/44—Trisazo dyes ot the type the component K being a hydroxy amine
- C09B35/46—Trisazo dyes ot the type the component K being a hydroxy amine the component K being an amino naphthol
- C09B35/463—D being derived from diaminodiphenyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
282,548. British Dyestuffs Corporation, Ltd., and Moss, H. W. Dec. 7, 1926. Trisazo dyes dyeing cotton in bluish black shades which can be diazotized on the fibre and developed with the usual components, e.g. #-naphthol or m-toluylenediamine are made by coupling a diazotized nitramine or acidyldiamine of the benzene series, with or without other substituents, with a peri-aminonaphtholsulphonic acid in an acid medium, further coupling in an alkaline medium with a tetrazotized diamine of the benzidine series, and again coupling the resulting diazodisazo body with a-naphthylamine or its 6- or 7-sulphonic acids (or their technical mixture), the nitro group being reduced or the acidyl group removed by hydrolysis at any stage after the first coupling. In examples, (1) pnitraniline is diazotized and coupled with H-acid, the monoazo dye obtained is coupled with tetrazotized benzidine, and the product is coupled with a-naphthylamine, the nitro-group being finally reduced by sodium sulphide, (2) p-nitraniline is diazotized and coupled with H-acid, the nitro group is reduced, and the product is coupled with tetrazotized benzidine and a-naphthylamine, and (3) p-aminoacetanilide is diazotized and coupled with H acid, and the product is coupled with tetrazotized benzidine and a-naphthylamine, the acetyl group being finally removed by alkaline hydrolysis. In an example of the dyeing process, cotton is dyed with the dyestuff obtained in the examples, which is then diazotized on the fibre and developed with m-toluylendediamine, a deep black shade very fast to washing and to light is obtained. Dyestuffs from the following components are also specified :-p-nitraniline-o-sulphonic acid, 5-nitro- 2-anisidine, o-chlor-p-nitraniline, or m-nitraniline, H-acid, benzidine, and a-naphthylamine; pnitraniline, H-acid, dianisidine and a-naphthylamine; p-nitraniline, H-acid, benzidine and Cleve's acid; and p-nitraniline, 1: 8-aminonaphthol-4-sulphonic acid, benzidine and a-naphthylamine. Specification 15725/91 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3102126A GB282548A (en) | 1926-12-07 | 1926-12-07 | New azo dyestuffs and their application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3102126A GB282548A (en) | 1926-12-07 | 1926-12-07 | New azo dyestuffs and their application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB282548A true GB282548A (en) | 1927-12-29 |
Family
ID=10316731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3102126A Expired GB282548A (en) | 1926-12-07 | 1926-12-07 | New azo dyestuffs and their application |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB282548A (en) |
-
1926
- 1926-12-07 GB GB3102126A patent/GB282548A/en not_active Expired
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