GB190719479A - Improvements in the Manufacture and Production of Azo Colouring Matters. - Google Patents
Improvements in the Manufacture and Production of Azo Colouring Matters.Info
- Publication number
- GB190719479A GB190719479A GB190719479DA GB190719479A GB 190719479 A GB190719479 A GB 190719479A GB 190719479D A GB190719479D A GB 190719479DA GB 190719479 A GB190719479 A GB 190719479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- sulphonic acid
- zinc
- salts
- dye
- 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
19,479. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Aug. 30. Dyes, artificial.-Zinc-alkali salts of the disazo dye from 2 : 6-tetrazophenol-4-sulphonic acid and #-naphthol, described in Specification No. 2397, A.D. 1901, are produced by treating the alkali salts of the colouring matter with oxide, hydroxide, carbonate, or other salt of zinc ; or the free acid dye-stuff is treated with one of these compounds in presence of alkali or alkali salt ; or the dyecomponeuts are coupled in presence of one of these compounds. The tetrazophenol sulphonic acid may be prepared from diaminophenol sulphonic acid or from diaminochlorbenzene sulphonic acid, as describe in Specification No. 16,811, A.D. 1901. In the latter case, the tetrazochlorbenzene sulphonic acid is treated with, say, carbonate or hydroxide of zinc to replace chlorine by hydroxyl, and the solution thus obtained is combined with alkali #-naphthol. These double salts are more soluble than the alkali salts or the free acid dye.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190719479T | 1907-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190719479A true GB190719479A (en) | 1908-02-27 |
Family
ID=32436028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190719479D Expired GB190719479A (en) | 1907-08-30 | 1907-08-30 | Improvements in the Manufacture and Production of Azo Colouring Matters. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190719479A (en) |
-
1907
- 1907-08-30 GB GB190719479D patent/GB190719479A/en not_active Expired
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