GB389853A - Improvements in dyeing with azoic colours - Google Patents
Improvements in dyeing with azoic coloursInfo
- Publication number
- GB389853A GB389853A GB2673731A GB2673731A GB389853A GB 389853 A GB389853 A GB 389853A GB 2673731 A GB2673731 A GB 2673731A GB 2673731 A GB2673731 A GB 2673731A GB 389853 A GB389853 A GB 389853A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diazo
- dimethoxyanilide
- diaminodiphenylamine
- padding
- impregnating
- 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
Landscapes
- Coloring (AREA)
Abstract
Azo dyes are made on the fibre by impregnating the material with a coupling component, padding in a diazo solution and then subjecting the material after it has passed the diazo bath to a rapid beating operation at a value substantially above atmospheric to develop the colour. The coupling is thereby accelerated and darker shades are obtained. In examples the following dyestuffs are produced by impregnating with the arylide of 2 : 3-oxynaphthoic acid, padding in a diazo solution and developing by passing over steam-heated drying tins: (1) 4-amino-4<1>-methoxydiphenylamine --> the anilide, (2) a -aminoanthraquinone --> the 2 : 5-dimethoxyanilide (zinc chloride double salt of the diazo compound used), (3) 4 : 4<1>-diaminodiphenylamine \sQ the 4-chloranilide, (4) 2 : 5-dichloraniline and 4 : 4<1>-diaminodiphenylamine (in admixture) --> the 2 : 5-dimethoxyanilide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2673731A GB389853A (en) | 1931-09-25 | 1931-09-25 | Improvements in dyeing with azoic colours |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2673731A GB389853A (en) | 1931-09-25 | 1931-09-25 | Improvements in dyeing with azoic colours |
Publications (1)
Publication Number | Publication Date |
---|---|
GB389853A true GB389853A (en) | 1933-03-27 |
Family
ID=10248432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2673731A Expired GB389853A (en) | 1931-09-25 | 1931-09-25 | Improvements in dyeing with azoic colours |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB389853A (en) |
-
1931
- 1931-09-25 GB GB2673731A patent/GB389853A/en not_active Expired
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