GB396393A - New indophenols and sulphur dyes therefrom - Google Patents
New indophenols and sulphur dyes therefromInfo
- Publication number
- GB396393A GB396393A GB303532A GB303532A GB396393A GB 396393 A GB396393 A GB 396393A GB 303532 A GB303532 A GB 303532A GB 303532 A GB303532 A GB 303532A GB 396393 A GB396393 A GB 396393A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indophenols
- nitrosophenol
- sulphurized
- condensing
- indophenol
- 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
- C09B49/00—Sulfur dyes
- C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Color Printing (AREA)
- Coloring (AREA)
- Indole Compounds (AREA)
Abstract
Indophenols; sulphur dyes.--Indophenols are prepared by condensing a body of the general formula <FORM:0396393/IV/1> wherein Ar stands for an aryl radicle having a free p-position, x stands for hydrogen, alkyl or aryl and y stands for a --CN or --CONH2 group, with a nitrosophenol or a quinonechlorimide, or oxidizing such a body with p-aminophenol according to known methods. By sulphurizing these indophenols or the corresponding leuco bodies sulphur dyestuffs giving level greenish-blue to violet-blue shades on cotton are obtained. In examples (1) anilinoacetamide is condensed with p-nitrosophenol and the indophenol so obtained sulphurized either before or after reduction; the same leuco-indophenol is produced by oxidizing anilinoacetamide (obtained by boiling the corresponding nitrile in soda solution) with p-aminophenol by means of acid bichromate followed by reduction with zinc dust: (2) o-toluidinopropionitrile (prepared by condensing o - toluidine, acetaldehyde - bisulphite and sodium cyanide together) is condensed with p-nitrosophenol, and the resulting indophenol reduced and sulphurized: (3) the nitrile obtained by condensing aniline, benzaldehydebisulphite and alkali cyanide together is treated with quinonechlorimide in sulphuric acid; the resulting indophenol is sulphurized on reduction: (4) the nitrile obtained by condensing a -naphthylamine, acetaldehyde and alkali cyanide together is treated with p-nitrosophenol and the product reduced to the leuco body and sulphurized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB303532A GB396393A (en) | 1932-02-01 | 1932-02-01 | New indophenols and sulphur dyes therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB303532A GB396393A (en) | 1932-02-01 | 1932-02-01 | New indophenols and sulphur dyes therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB396393A true GB396393A (en) | 1933-08-01 |
Family
ID=9750722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB303532A Expired GB396393A (en) | 1932-02-01 | 1932-02-01 | New indophenols and sulphur dyes therefrom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB396393A (en) |
-
1932
- 1932-02-01 GB GB303532A patent/GB396393A/en not_active Expired
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