GB190503083A - Improvements in the Manufacture and Production of Sulphur Colouring Matters. - Google Patents
Improvements in the Manufacture and Production of Sulphur Colouring Matters.Info
- Publication number
- GB190503083A GB190503083A GB190503083DA GB190503083A GB 190503083 A GB190503083 A GB 190503083A GB 190503083D A GB190503083D A GB 190503083DA GB 190503083 A GB190503083 A GB 190503083A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blue
- solutions
- hot
- sulphur
- oxydiphenylamine
- 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
- Heat Sensitive Colour Forming Recording (AREA)
- Coloring (AREA)
Abstract
3083. Johnson, J. Y., [Badische Anilin & Soda Fabrik]. Feb. 14. Dyes, artificial.-Blue to violet-blue sulphuretted dyes, which are difficultly soluble in cold and readily soluble in hot solutions of sodium sulphide to form colourless solutions, and are practically insoluble in caustic soda, are obtained by heating with sulphur an alkali salt of a p-amido-p-oxydiarylamine, such as p-amidop-oxydiphenylamine, its arylated derivatives, and the homologues and substitution products of these compounds. In examples, p-phenylamido-p<1>-oxydiphenylamine, p-amido-p<1>-oxy-m<1>-m<1>-dichlordiphenylamine, and p-xylylamid p-oxydiphenylamine are heated with caustic alkali solution until free from water, sulphur is added, and the temperature is raised. The melts are dissolved in hot sodium sulphide solution containing caustic soda. The dyes are precipitated by blowing air through the solutions. The dye derived from phenylamidooxydiphenylamine is a powder having a metallic lustre. It is almost insoluble in cold aniline, but dissolves slightly in hot aniline to a blue solution. With sulphuric acid it gives a blue solution. Hot sodium sulphide solutions of the leuco compounds become fixed on vegetable fibres. On being exposed to the air, the dyeings become blue to violet-blue.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190503083T | 1905-02-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190503083A true GB190503083A (en) | 1905-05-25 |
Family
ID=32193885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190503083D Expired GB190503083A (en) | 1905-02-14 | 1905-02-14 | Improvements in the Manufacture and Production of Sulphur Colouring Matters. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190503083A (en) |
-
1905
- 1905-02-14 GB GB190503083D patent/GB190503083A/en not_active Expired
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