GB190117356A - The Manufacture and Production of New Azo Colouring Matters and Materials for use therein. - Google Patents
The Manufacture and Production of New Azo Colouring Matters and Materials for use therein.Info
- Publication number
- GB190117356A GB190117356A GB190117356DA GB190117356A GB 190117356 A GB190117356 A GB 190117356A GB 190117356D A GB190117356D A GB 190117356DA GB 190117356 A GB190117356 A GB 190117356A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- produced
- chlor
- acting
- combining
- 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
Landscapes
- Coloring (AREA)
Abstract
17,356. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Aug. 29. p-Chlor-salicylic acid is produced by acting with chlorine upon salicylic acid suspended in nitrobenzene, and then extracting with soda solution and precipitating by hydrochloric acid. p-Chlor-o-nitrosalicylic acid is produced by acting upon a solution of p-chlorsalicylic acid in sulphuric acid with the calculated quantity of nitric acid at or below 0‹ C., and, after stirring some hours, pouring the mixture on ice. p-Chlor-o-amidosalicylic acid is produced by reducing the foregoing nitro product, preferably by means of sodium bisulphite. Uther reducing- agents, such as iron and acetic acid, may be used. Dyes, artificial.-A disazo dye, which yields violet black shades on silk and wool, and a fast deep black with a superficial blue shade on further treatment of the dyed goods with sodium bichromate, is produced by first combining the diazo compound of the foregoing chloramidosalicylic acid with 1 : 6- or 1 : 7-alpha-naphthylamine sulpbonic acid, and then rediazotizing the monoazo product and combining it with #-naphthol.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190117356T | 1901-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190117356A true GB190117356A (en) | 1902-06-19 |
Family
ID=32424713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190117356D Expired GB190117356A (en) | 1901-08-29 | 1901-08-29 | The Manufacture and Production of New Azo Colouring Matters and Materials for use therein. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190117356A (en) |
-
1901
- 1901-08-29 GB GB190117356D patent/GB190117356A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2314023A (en) | Substantive azo dyestuffs and process of making same | |
US2359305A (en) | Azo compounds and material colored therewith | |
US2109552A (en) | Azo dyestuffs and their metalliferous derivatives | |
GB190117356A (en) | The Manufacture and Production of New Azo Colouring Matters and Materials for use therein. | |
US622961A (en) | Ivan levinstein and carl mensching | |
US2156446A (en) | Production of azo dyestuffs | |
US3637649A (en) | Water-soluble phenyl azonaphthyl-azophenyl | |
US1943170A (en) | Azo-dyestuffs and process of making same | |
US3023071A (en) | Process for the coloration of nylon type 11 fibres | |
US2067726A (en) | Water insoluble monoazo dyes | |
US2488204A (en) | Azo dyestuffs and method for dyeing cellulose acetate | |
US2239005A (en) | Hexakisazo dyestuffs and their manufacture | |
US2650916A (en) | Disazo dyestuffs | |
US2094414A (en) | Azo dyestuffs | |
US2117707A (en) | Azo dye | |
US1365040A (en) | Disazo dye | |
US1806137A (en) | Disazo dye | |
US807289A (en) | Brown azo dye and process of making same. | |
US700565A (en) | Azo dye and process of making same. | |
US418657A (en) | Gustav schultz | |
US2117334A (en) | Monoazo dyestuffs and their production | |
US2155685A (en) | Azo dyes | |
US521096A (en) | Heinricii august bernthsen | |
US718181A (en) | Blue wool-dye and process of making same. | |
US1237192A (en) | Leucotriarylmethanazo dyestuffs and a process of making same. |