GB540978A - Improvements in or relating to the production of azo dyestuffs - Google Patents
Improvements in or relating to the production of azo dyestuffsInfo
- Publication number
- GB540978A GB540978A GB611140A GB611140A GB540978A GB 540978 A GB540978 A GB 540978A GB 611140 A GB611140 A GB 611140A GB 611140 A GB611140 A GB 611140A GB 540978 A GB540978 A GB 540978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- xylidine
- diazo
- amino
- cumidine
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/02—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes
- D06P1/12—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes prepared in situ
- D06P1/127—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using azo dyes prepared in situ using a stabilised diazo component, e.g. diazoamino, anti-diazotate or nitrosamine R-N=N-OK, diazosulfonate, hydrazinesulfonate, R-N=N-N-CN
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
540,978. Dyeing textiles. HEATON, J. S., and HOWIS, C. C. April 4, 1940, No. 6111. [Class 15 (ii)] Azo dyes, forming on the material; printing.- Stable preparations for use in the production of azo dyestuffs on the material to be dyed, by the action of steam alone and without the use of acid, are obtained by diazotizing aniline or an alkyl or alkoxy-substituted derivative thereof, re-acting the diazo compound with an aminomonocarboxylic acid of the benzene series, free from sulphonic acid or sulphonamide groups and having the amino group unsubstituted, and mixing the resulting diazoamino compound with a coupling component in presence of an amount of a fixed alkali sufficient to neutralize all the acid and hydroxyl groups present. Specified substituted anilines for use as diazo components are o-, m- and ptoluidines, o- and p-anisidines, p-phenetidine, 4-m-xylidine, p-xylidine and #-cumidine and specified amino-monocarboxylic acids for use as stabilizers are o-, m- and p-aminobenzoic and 3-amino-4-methylbenzoic acids. In examples, (1) an aqueous paste containing the sodium salt of the diazoamino compound from diazotized p-xylidine and o-aminobenzoic acid is mixed with di-(acetoacetyl)-tolidine and aqueous caustic soda and a neutral or weakly caustic thickener is added ; the resulting paste may be printed on a cellulosic fabric and developed to a yellow print by steaming ; (2) the coupling component in (1) is replaced by the anilide of 2 : 3-hydroxynaphthoic acid to obtain a scarlet print ; (3) the diazo component in (1) is replaced by #-cumidine to obtain a yellow print. Specification 466,846 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB611140A GB540978A (en) | 1940-04-04 | 1940-04-04 | Improvements in or relating to the production of azo dyestuffs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB611140A GB540978A (en) | 1940-04-04 | 1940-04-04 | Improvements in or relating to the production of azo dyestuffs |
Publications (1)
Publication Number | Publication Date |
---|---|
GB540978A true GB540978A (en) | 1941-11-07 |
Family
ID=9808578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB611140A Expired GB540978A (en) | 1940-04-04 | 1940-04-04 | Improvements in or relating to the production of azo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB540978A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2815259A (en) * | 1957-12-03 | Process of preparing ice-colors in |
-
1940
- 1940-04-04 GB GB611140A patent/GB540978A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2815259A (en) * | 1957-12-03 | Process of preparing ice-colors in |
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