GB407206A - Manufacture of azo-dyestuffs - Google Patents
Manufacture of azo-dyestuffsInfo
- Publication number
- GB407206A GB407206A GB1080433A GB1080433A GB407206A GB 407206 A GB407206 A GB 407206A GB 1080433 A GB1080433 A GB 1080433A GB 1080433 A GB1080433 A GB 1080433A GB 407206 A GB407206 A GB 407206A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amino
- dyeing
- oxynaphthoic acid
- methoxy
- violet
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Azo dyes; azo dyes, forming on the material; cellulose acetate, dyeing; regenerated celluloses, dyeing.--Azo dyes are produced in substance or on the fibre by coupling a diazotized aryl ether of 2-amino-4-methoxy-5-acetylaminophenol with an arylide of 2 : 3-oxynaphthoic acid. The dyeings are violet to blue-violet and particularly fast to light, to chlorine and to kier-boiling. The following examples are specified: (1) the dyestuff 2-amino-4-methoxy-5-acetylamino-1 : 1<1>-diphenylether --> the p-anisidide of 2 : 3-oxynaphthoic acid is produced in substance; (2) cotton yarn, impregnated with a solution of the 2<1>-methyl-4<1>-methoxyanilide of 2 : 3-oxynaphthoic acid containing sodium hydroxide and turkey red oil, is developed to a pure violet dyeing of particularly good fastness to light in a neutralized solution of diazotized 2 -amino - 4 - methoxy - 5 - acetyl - amino - 2<1> - methyl - 1 : 1<1> - diphenylether; a similar dyeing is obtained with the use of the 2<1> : 4<1> - dimethoxy - 5<1> - chloranilide of 2 : 3 oxynaphthoic acid and a blue-violet dyeing with the use of the p-anisidide of 2 : 3-oxynaphthoic acid; (3) wool yarn, impregnated with a solution of the anilide of 2 : 3-oxynaphthoic acid containing sodium hydroxide and turkey red oil, is developed in a neutralized solution of diazotized 2-amino-4 : 4<1>-dimethoxy-5-acetylamino-1 : 1<1>-diphenylether, rinsed and soaped to obtain a fast pure violet dyeing; a similar dyeing is obtained with the use of the p-anisidide of 2 : 3-oxynaphthoic acid; (4) cotton yarn, impregnated with a solution of the o-anisidide of 2 : 3-oxynaphthoic acid containing sodium hydroxide, turkey red oil and formaldehyde, is developed in a neutralized solution of diazotized 2-amino-4-methoxy-5-acetylamino - 4<1> - methyl - 1 : 1<1> - diphenylether, rinsed and soaped to obtain a fast bluish violet dyeing; violet dyeings are also obtained with the use of the 2<1>-methyl-4<1>-methoxyanilide of 2 : 3-oxynaphthoic acid and by the similar production on the fibre of the dyestuffs 2-amino-4 - methoxy - 5 - acetylamino - 2<1> - chloro - 1 : 1<1> - diphenylether --> the b -naphthylamide or the 2<1> : 4<1>-dimethoxy-5<1>-chloranilide of 2 : 3-oxynaphthoic acid; the process is also applicable in piece-dyeing and in printing and the dyestuffs may also be produced upon other fibres, such as wool, silk and artificial silks of the viscose, cuprammonium and cellulose acetate types; in the application to wool the process of Specification 310,758, [Class 15 (ii)], may be employed. Specifications 202,984, 294,883, [both in Class 15 (ii)], and 383,064 also are referred to. Aryl ethers of 2-amino-4-methoxy-5-acetylaminophenol are obtained by reducing the nitro groups in the condensation products of 1-chloro-2-nitro-4-methoxy-5-amino- or acetylaminobenzene with phenol or its nuclear substitution products, such as o-, m- or p-cresol, o-, m- or p-chlorophenol, a chlorocresol, a dichlorophenol, a monoalkylether of hydroquinone, resorcinol or pyrocatechol or chloroguaiacol, after acetylation, if necessary, of the amino group.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1080433A GB407206A (en) | 1933-04-11 | 1933-04-11 | Manufacture of azo-dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1080433A GB407206A (en) | 1933-04-11 | 1933-04-11 | Manufacture of azo-dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB407206A true GB407206A (en) | 1934-03-15 |
Family
ID=9974575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1080433A Expired GB407206A (en) | 1933-04-11 | 1933-04-11 | Manufacture of azo-dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB407206A (en) |
-
1933
- 1933-04-11 GB GB1080433A patent/GB407206A/en not_active Expired
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