CH173263A - Process for the preparation of a dye of the gallocyanin series. - Google Patents
Process for the preparation of a dye of the gallocyanin series.Info
- Publication number
- CH173263A CH173263A CH173263DA CH173263A CH 173263 A CH173263 A CH 173263A CH 173263D A CH173263D A CH 173263DA CH 173263 A CH173263 A CH 173263A
- Authority
- CH
- Switzerland
- Prior art keywords
- series
- dye
- gallocyanin
- preparation
- dyes
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Farbstoffes der Galloeyaninreihe. <B>E</B>s wurde gefunden. dass man zu wert vollen Farbstoffen der Gallocyaninreihe ge langt, wenn man Gallussäure oder deren De rivate, wie Gallamid, Gallanilid, Gallussäure- ester oder auch Pyrogallol und Abkömmlinge dieser Körper, mit Nitrosoverbindungen se kundärer oder tertiärer aromatischer Amine der allgemeinen Formel:
EMI0001.0010
kondensiert, worin R Wasserstoff, Alk\-1. Oxalkyl, Sulfalkyl oder Aralkyl bedeutet.
Die so erhaltenen Farbstoffe können ge gebenenfalls nach den bei der Herstellung von Farbstoffen der Gallocyaninreihe übli ehen Methoden in weitere Derivate über geführt werden, zum Beispiel durch Ab spaltung der Carboxylgruppe, Reduktion zu Leukofarbstoffen, Kondensation mit Mono- oder Diaminen oder deren Sulfonsäuren, mit Aldehyden, Phenolen,
Naphtholen oder Vaphtholsulfonsäuren. Die nach diesen Ar beitsweisen gewonnenen Produkte können nötigenfalls noch einer nachträglichen Sul- fonierung unterworfen werden.
Die so erhaltenen Farbstoffe zeichnen sich durch eine besonders für Druckfarbstoffe erwünschte vorzügliche Löslichkeit, durch Klarheit des Farbtones und durch gute Echt heitseigenschaften aus.
Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines neuen Farbstoffes der Gallocyaninreihe durch Kon densation von Gallamid mit Nitrosophenyl- taurin.
<I>Beispiel:</I> 17 Gewichtsteile Gallamid werden in 340 Gewichtsteilen Methanol heiss gelöst und zu der Lösung werden 35 Gewichtsteile Nitrosophenyltaurin in dem Masse gegeben, wie die Gelbfärbung verschwindet. Der Farb stoff der Formel:
EMI0002.0001
fällt aus und wird durch Filtration isoliert. In Form seiner Alkalisalze ist er vorzüglich löslich. Er gibt auf Baumwolle mittelst Chrombeize gedruckt sehr gleichmässige, klare, blauviolette Drucke von guter Licht-. Chlor- und Seifenec=htheit.
Process for the preparation of a dye of the galloeyanin series. <B> E </B> s was found. that valuable dyes of the gallocyanin series are obtained if gallic acid or its derivatives, such as gallamide, gallanilide, gallic acid ester or even pyrogallol and derivatives of these bodies, with nitroso compounds of secondary or tertiary aromatic amines of the general formula:
EMI0001.0010
condensed, where R is hydrogen, Alk \ -1. Denotes oxalkyl, sulfalkyl or aralkyl.
The dyes obtained in this way can optionally be converted into further derivatives by the methods customary in the preparation of dyes of the gallocyanine series, for example by splitting off the carboxyl group, reduction to leuco dyes, condensation with mono- or diamines or their sulfonic acids, with aldehydes , Phenols,
Naphthols or vaphtholsulfonic acids. The products obtained by this method of operation can, if necessary, also be subjected to a subsequent sulphonation.
The dyes obtained in this way are distinguished by their excellent solubility, which is particularly desirable for printing dyes, by the clarity of the hue and by good fastness properties.
The subject of the present patent is a process for the production of a new dye of the gallocyanin series by condensation of gallamide with nitrosophenyl taurine.
<I> Example: </I> 17 parts by weight of gallamide are dissolved in 340 parts by weight of hot methanol and 35 parts by weight of nitrosophenyltaurine are added to the solution as the yellow coloration disappears. The color of the formula:
EMI0002.0001
precipitates and is isolated by filtration. In the form of its alkali salts, it is extremely soluble. It gives very even, clear, blue-violet prints of good light- quality printed on cotton by means of chrome stain. Chlorine and soap security.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE173263X | 1932-04-14 | ||
CH169050T | 1933-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH173263A true CH173263A (en) | 1934-11-15 |
Family
ID=25718653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH173263D CH173263A (en) | 1932-04-14 | 1933-04-05 | Process for the preparation of a dye of the gallocyanin series. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH173263A (en) |
-
1933
- 1933-04-05 CH CH173263D patent/CH173263A/en unknown
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