GB385307A - Improvements in and relating to dyes and dyeing - Google Patents
Improvements in and relating to dyes and dyeingInfo
- Publication number
- GB385307A GB385307A GB1786531A GB1786531A GB385307A GB 385307 A GB385307 A GB 385307A GB 1786531 A GB1786531 A GB 1786531A GB 1786531 A GB1786531 A GB 1786531A GB 385307 A GB385307 A GB 385307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyes
- azo
- arylides
- oxynaphthoic
- sulpho
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
- C09B29/18—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides
- C09B29/20—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series
Abstract
Azo dyes; azo dyes, forming on the material.--1-Aryldiazosulphonates of 2 : 3-oxynaphthoic arylides are produced by coupling 1-sulpho-2 : 3-oxynaphthoic arylides with diazo compounds in acid or neutral solution. On cautious treatment with alkali, preferably sodium carbonate, the products yield alkali salts of 1-sulpho-1-arylazo-b -naphthaquinone-3-carboxyarylides, which are converted into the corresponding azo-derivatives of the 2 : 3-oxynaphthoic arylides on treatment with acid, the sulpho group being eliminated. The conversion into the azo dyestuff may be effected on the fibre, in conjunction with enolic sulphuric esters of vat dyes or other quinones, or with the dyes described in Specification 333,506, [Class 2 (iii), Dyes &c.], if desired. In examples (1) 5-nitro-2-aminoanisol is diazotized, coupled with sodium-2 : 3-oxynaphthoicanilide-1-sulphonate, and the product suspended in water and treated with sodium carbonate, and (2) wool is dyed in a bath made by dissolving the product of example (1) in water, the bath being acidified with sulphuric acid, after the absorption of the dyestuff, to precipitate the insoluble azo dyestuff on the fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1786531A GB385307A (en) | 1931-06-19 | 1931-06-19 | Improvements in and relating to dyes and dyeing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1786531A GB385307A (en) | 1931-06-19 | 1931-06-19 | Improvements in and relating to dyes and dyeing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB385307A true GB385307A (en) | 1932-12-19 |
Family
ID=10102556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1786531A Expired GB385307A (en) | 1931-06-19 | 1931-06-19 | Improvements in and relating to dyes and dyeing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB385307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257312B (en) * | 1959-01-29 | 1967-12-28 | Hoechst Ag | Process for the production of azo pigments |
-
1931
- 1931-06-19 GB GB1786531A patent/GB385307A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1257312B (en) * | 1959-01-29 | 1967-12-28 | Hoechst Ag | Process for the production of azo pigments |
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