GB490289A - The manufacture of azo dyestuffs - Google Patents
The manufacture of azo dyestuffsInfo
- Publication number
- GB490289A GB490289A GB386737A GB386737A GB490289A GB 490289 A GB490289 A GB 490289A GB 386737 A GB386737 A GB 386737A GB 386737 A GB386737 A GB 386737A GB 490289 A GB490289 A GB 490289A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aminophenyl
- sulphonyl
- acetic acid
- acid
- chloro
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Azo dyes are prepared by combining diazotized amines of the formula H2N-aryl-SO2-alkyl-COOH wherein aryl means a radicle of the benzene series containing the amino group in m- or p-position to the -SO2- group, with amines or phenols of the benzene series or pyrazolones or tetrahydronaphthoquinolines, which coupling components are free from carboxylic and sulphonic acid groups. They are especially useful for dyeing and printing acetate artificial silk, some giving pure white discharge effects. In examples, dyes from the following are prepared: diazo components: 3- or 4-aminophenyl-sulphonyl-acetic acid; 3-methoxy-4-aminophenyl-sulphonyl-acetic acid; 2- or 3-chloro-4-aminophenyl-sulphonyl-acetic acid; 6-methyl-3-chloro-4-aminophenyl-sulphonyl-acetic acid; 2,5 - dichloro - 4 - aminophenyl - sulphonyl - acetic acid; 3-chloro-4-aminophenyl-sulphonyl-propionic - acid and 2 - nitro - 4 - aminophenyl - sulphonyl-acetic acid; coupling components: N.N-dimethyl-, N-benzyl-, N.N-dioxyethyl-, N-oxyethyl-N-butyl-, and N-oxyethyl-N-cyanethyl-m-toluidine; N.N-dimethyl-, N.N-diethyl and N-oxyethyl-N-methyl-aniline; 1-amino-, 1-N.N-dioxyethylamino-, and 1-(N-oxyethyl-N-butylamino)-2-methoxy-5-methylbenzene; 1-phenyl- and 1 - (21 - chlorphenyl) - 3 - methyl - 5 - pyrazolone; 1 - phenyl - 5 - pyrazolone - 3 - carbonamide; p-cresol and 1.2.3.4-tetrahydro-3,7-dihydroxy - 11.21 - naphthoquinoline(acid). Specification 415,753 is referred to. According to the Provisional Specification, dyes are prepared by coupling any component containing no substituents causing solubility in water, with any diazotized amines of the above general formula. Aminophenyl - sulphonyl - carboxylic acids are prepared by oxidizing the alkali salts of the corresponding acetylamino - phenyl mercaptoalkyl-carboxylic acids with potassium permanganate and removing the acetyl group. 3 - Chloro - 4 - aminophenyl - sulphonyl - propionic acid is obtained by condensing 3-chloro-4 - aminophenyl - mercaptan with b - chlorpropionic acid, acetylating, oxidizing the acetyl derivative and saponifying the acetyl group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB386737A GB490289A (en) | 1937-02-09 | 1937-02-09 | The manufacture of azo dyestuffs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB386737A GB490289A (en) | 1937-02-09 | 1937-02-09 | The manufacture of azo dyestuffs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB490289A true GB490289A (en) | 1938-08-09 |
Family
ID=9766374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB386737A Expired GB490289A (en) | 1937-02-09 | 1937-02-09 | The manufacture of azo dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB490289A (en) |
-
1937
- 1937-02-09 GB GB386737A patent/GB490289A/en not_active Expired
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