GB282683A - Process for the manufacture of mono-azo dyestuffs - Google Patents
Process for the manufacture of mono-azo dyestuffsInfo
- Publication number
- GB282683A GB282683A GB34492/27A GB3449227A GB282683A GB 282683 A GB282683 A GB 282683A GB 34492/27 A GB34492/27 A GB 34492/27A GB 3449227 A GB3449227 A GB 3449227A GB 282683 A GB282683 A GB 282683A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonic acid
- aminonaphthalene
- hydroxyphenyl
- nitro
- acid
- 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
- C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
282,683. I. G. Farbenindustrie Akt.- Ges. Dec. 23, 1926, [Convention date]. Monoazo dyes yielding blue and violet to black shades on wool and suitable for dyeing acetate silk in clear fast shades are obtained by coupling the diazo compounds from 4-nitraniline-2-sulphonic acid or its substitution products, 5-nitro- 2-aminobenzyl-#-sulphonic acid, or a sulphonic acid of 4-nitro-1-aminonaphthalene with 2-(4<1>- hydroxyphenyl)-aminonaphthalene or its substitution products. In examples the preparation is described of the dyestuffs 4-nitraniline-2- sulphonic acid # 2-(4'-hydroxyphenyl) aminonaphthalene or its 31-carboxylic acid; 4- nitraniline-2 : 5-disulphonic acid (prepared by nitration of aniline 2: 5-disulphonic acid), 2- methoxy-4-nitranilime-6-sulphonic acid, or 5-nitro- 2-aminobenzyl-#-sulphonic acid # 2-(4<1>- hydroxyphenyl) aminonaphthalene; 4-nitro-1- aminonaphthalene-5-sulphonic acid or 4-nitro-1- aminonaphthalene-6-sulphonic acid # 2-(4<1>- hydroxyphenyl)-aminonaphthalene. A table is given showing the shades obtainable on wool with the products from various components. 4<1> - Hydroxyphenyl - 2 - aminonapthalene-7- sulphonic acid is prepared from p-aminophenol and 2-hydroxynaphthalene-7-sulphonic acid by boiling with bisulphite lye. 4<1> - Hydroxyphenyl - 2 - aminonaphthalene-3<1>- sulphonic acid is prepared from #-naphthol and 4-aminophenol-2-sulphonic acid by boiling with bisulphite lye.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE282683X | 1926-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB282683A true GB282683A (en) | 1929-03-20 |
Family
ID=6042172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB34492/27A Expired GB282683A (en) | 1926-12-23 | 1927-12-20 | Process for the manufacture of mono-azo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB282683A (en) |
-
1927
- 1927-12-20 GB GB34492/27A patent/GB282683A/en not_active Expired
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