GB189813167A - A Black Cotton Dyestuffs and Process for the Production of the same. - Google Patents
A Black Cotton Dyestuffs and Process for the Production of the same.Info
- Publication number
- GB189813167A GB189813167A GB189813167DA GB189813167A GB 189813167 A GB189813167 A GB 189813167A GB 189813167D A GB189813167D A GB 189813167DA GB 189813167 A GB189813167 A GB 189813167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- dinitrodiphenylamine
- alkalies
- melted
- produced
- 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
13,167. Bang, A., [Dahl & Co.]. June 13. Dyes, artificial.-A dye-stuff. which is soluble in water and alkalies and yields absolutely fast brownish-green to intense black shades upon unmordanted cotton according to the strength of the solution, is produced as follows :-Dinitrodiphenylamine monosulphonic acid is melted with sodium sulphide and a little water, then sulphur is added, and the mixture is heated to dryness and then melted at 200‹ to 250‹ C., at which temperature it is stirred until it again becomes dry. If the product is dissolved in water and acidulated, a brownish-black precipitate is formed which redissolves in alkalies with a greenish colour. The dinitrodiphenylamine monosulphonic acid used in this process is produced by boiling aniline sulphonic acid with dinitrochlorobenzene in aqueous solution.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB189813167T | 1898-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB189813167A true GB189813167A (en) | 1899-03-11 |
Family
ID=32416626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB189813167D Expired GB189813167A (en) | 1898-06-13 | 1898-06-13 | A Black Cotton Dyestuffs and Process for the Production of the same. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB189813167A (en) |
-
1898
- 1898-06-13 GB GB189813167D patent/GB189813167A/en not_active Expired
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