CH170932A - Process for the preparation of a monoazo dye. - Google Patents
Process for the preparation of a monoazo dye.Info
- Publication number
- CH170932A CH170932A CH170932DA CH170932A CH 170932 A CH170932 A CH 170932A CH 170932D A CH170932D A CH 170932DA CH 170932 A CH170932 A CH 170932A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- good
- monoazo dye
- dye
- dianotized
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Monoazofarbstoffes. Es wurde gefunden, dass man zu wert vollen Monoazofarbstoffen gelangt, die hohe Lichtechtheit mit gutem Egalisierungsver- mögen und guter Waschechtheit vereinigen, wenn man die Diazoverbindungen von Aminen der Anthranilsäure, ihren Halogen-Alkyl- oder -Alkogysubstitutionspr-odukten, in denen die beiden Wasserstoffatome der Karbonamid- gruppe durch Alkyl-,
Aryl- oder Aralkylreste ersetzt sind, mit Sulfonsäuren des 2-Naph- thylamins oder seiner Abkömmlinge in saurer Lösung kuppelt.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, dass man Anthranilsäurediphenylamid dianotiert und in saurer Lösung mit 2-Amirio-8-naph- thol-6-sulfonsäure kuppelt.
<I>Beispiel:</I> 28,8 GewichtsteileAnthranilsäurediplrenyl- amid werden wie üblich dianotiert und in schwach mineralsaurer Lösung mit 34,1 Ge wichtsteilen 2-Amino-S-riaphthol-6-sulfonsäur-e gekuppelt. Nach beendeter Kupplung wird sodaalkalisch gestellt und der Farbstoff aus gesalzen. Er färbt auf Wolle ein Rot von guter Lichtechtheit, verbunden mit gutem Egalisierungsvermögen, und guter Wasch echtheit.
Process for the preparation of a monoazo dye. It has been found that valuable monoazo dyes are obtained which combine high lightfastness with good leveling capacity and good washfastness if the diazo compounds of amines of anthranilic acid, their halogen-alkyl or -alkogy substitution products, in which the two hydrogen atoms are used the carbon amide group by alkyl,
Aryl or aralkyl radicals are replaced with sulfonic acids of 2-naphthylamine or its derivatives in acidic solution.
The present patent relates to a process for the preparation of a mono azo dye, characterized in that anthranilic acid diphenylamide is dianotized and coupled in acidic solution with 2-amino-8-naphthol-6-sulfonic acid.
<I> Example: </I> 28.8 parts by weight of anthranilic acid diphenyl amide are dianotized as usual and coupled with 34.1 parts by weight of 2-amino-S-riaphthol-6-sulfonic acid in a weakly mineral acid solution. After the coupling is complete, it is made alkaline with soda and the dye is salted out. It dyes wool a red with good lightfastness combined with good leveling properties and good washfastness.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE170932X | 1932-06-10 | ||
CH168731T | 1933-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH170932A true CH170932A (en) | 1934-07-31 |
Family
ID=25718613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH170932D CH170932A (en) | 1932-06-10 | 1933-06-03 | Process for the preparation of a monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH170932A (en) |
-
1933
- 1933-06-03 CH CH170932D patent/CH170932A/en unknown
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