GB190626416A - Manufacture of New Ortho-oxy-monoazo-colouring Matters. - Google Patents
Manufacture of New Ortho-oxy-monoazo-colouring Matters.Info
- Publication number
- GB190626416A GB190626416A GB190626416DA GB190626416A GB 190626416 A GB190626416 A GB 190626416A GB 190626416D A GB190626416D A GB 190626416DA GB 190626416 A GB190626416 A GB 190626416A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- sulphonic acid
- sulphonic
- aminonaphthol
- reduction
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
26,416. Bloxam, A. G., [Akt.-Ges. f³r Anilin-Fabrikation]. Nov. 21. Dyes, artificial.-Azo dyes are obtained by reduction of azo dyes of the type i.e. a dye obtained by coupling diazotized picramic acid with an acid R, where R = a naphthol sulphomc, aminonaphthol sulphonic, naphthylamine sulphonic, or dioxynaphthalene sulphonic acid. The reduction is effected by means of a hydrogen sulphide of an alkaline-earth metal, or by means of a mixture of sodium sulphide with a suitable salt of an alkaline-earth metal ; or according to the Provisional Specification, by means of a sulphide of an alkaline-earth metal. The preparation of the dye-stuff from picramic acid and 2 : 6-naphthol sulphonic acid, and the reduction thereof to the nitroamino dye-stuff, are described in an example, and a table is given of the properties of the dyes obtained by reduction of the dyes from picramic acid and 1 4-naphthol sulphonic acid, 1 :5-naphthol sulphonic acid, 1 : 8-aminonaphthol-4-sulphonic acid, 2 5-aminonaphthol-7-sulphonic acid, 2 : 8 aminonaphthol-6-sulphonic acid, 1:4-naphthylamine sulphonic acid, 2 : 6-naphthylamine sulphonic acid, and 1: 8-dioxynaphthalene-3 : 6-disulphonic acid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190626416T | 1906-11-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190626416A true GB190626416A (en) | 1907-11-07 |
Family
ID=32257350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190626416D Expired GB190626416A (en) | 1906-11-21 | 1906-11-21 | Manufacture of New Ortho-oxy-monoazo-colouring Matters. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190626416A (en) |
-
1906
- 1906-11-21 GB GB190626416D patent/GB190626416A/en not_active Expired
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