GB783610A - Process for dyeing nitrogenous fibrous material - Google Patents
Process for dyeing nitrogenous fibrous materialInfo
- Publication number
- GB783610A GB783610A GB17123/54A GB1712354A GB783610A GB 783610 A GB783610 A GB 783610A GB 17123/54 A GB17123/54 A GB 17123/54A GB 1712354 A GB1712354 A GB 1712354A GB 783610 A GB783610 A GB 783610A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyeing
- free
- sulphonic acid
- group
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Nitrogenous fibrous material such as leather, silk, wool and synthetic fibres, e.g. polyamide and polyurethane fibres, are dyed in a weakly alkaline to weakly acid medium with a metalliferous dyestuff which contains one atom of metal, e.g. cobalt or chromium, bound in complex union to two molecules of different monoazo dyestuffs, one of which is free from carboxylic acid groups in a position other than an ortho-position relatively to the azo-linkage and free from sulphonic acid groups and the other is also free from carboxylic acid groups in a position other than an ortho-position relatively to the azo-linkage and contains a single sulphonic acid group. At least one of the monoazo dyestuffs may contain a sulphonic acid amide group or a sulphone group or a sulphonic acid aryl ester group. The dyebath is preferably maintained at a pH of 8-5, by the addition of a weak acid, e.g. acetic acid, and the pH may be caused to fall during dyeing by the addition of, for example, ammonium acetate. Dyeing may be effected at a raised temperature and, if desired, under pressure. The dyeings may be subsequently steamed. Long lists of metalliferous dyestuffs are given and examples describe the dyeing of wool and nylon. Specifications 765,355 and 771,320 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH783610X | 1953-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB783610A true GB783610A (en) | 1957-09-25 |
Family
ID=4536409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17123/54A Expired GB783610A (en) | 1953-06-10 | 1954-06-10 | Process for dyeing nitrogenous fibrous material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB783610A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2008445A1 (en) * | 1968-05-14 | 1970-01-23 | Ciba Geigy | |
| EP0082819A1 (en) * | 1981-12-21 | 1983-06-29 | Ciba-Geigy Ag | Use of 1:2 cobalt complex dyes for dyeing leather or furs |
-
1954
- 1954-06-10 GB GB17123/54A patent/GB783610A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2008445A1 (en) * | 1968-05-14 | 1970-01-23 | Ciba Geigy | |
| EP0082819A1 (en) * | 1981-12-21 | 1983-06-29 | Ciba-Geigy Ag | Use of 1:2 cobalt complex dyes for dyeing leather or furs |
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