CH173270A - 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
- CH173270A CH173270A CH173270DA CH173270A CH 173270 A CH173270 A CH 173270A CH 173270D A CH173270D A CH 173270DA CH 173270 A CH173270 A CH 173270A
- Authority
- CH
- Switzerland
- Prior art keywords
- series
- dye
- gallocyanin
- preparation
- dyes
- Prior art date
Links
Landscapes
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
Verfahren zur Darstellung eines Farbstoffes der Galloeyaninreihe. Es wurde gefunden, dass man zu wert vollen Farbstoffen der Gallocy aninreihe ge langt, wenn man Gallussäure oder deren De rivate, wie Gallamid, Gallanilid, Gallussäure- ester oder auch Pyrogallal und Abkömmlinge dieser Körper, mit Nitrosoverbindungen se kundärer oder tertiärer aromatischer Amine der allgemeinen Formel:
EMI0001.0013
kondensiert, worin R.
Wasserstoff, Alkyl, Ogalkyl, Sulfalkyl oder Aralkyl bedeutet.
Die so erhaltenen Farbstoffe können ge gebenenfalls nach den bei der Herstellung von Farbstoffen der Gallocyaninreihe übli chen 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 Naphtholsulfonsäuren. Die nach diesen Ar beitsweisen gewonnenen Produkte können nötigenfalls noch einer nachträglichen Sul- fonieru.ng 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 znr Herstellung eines neuen Farbstoffes der Gallocyaninreihe durch Kon densation von Gallamid mit Nitrososulfopro- pylbutylanilin.
<I>Beispiel:</I> 17 Gewichtsteile Gallamid werden in 250 Gewichtsteilen Methanol heiss gelöst, und in die Lösung werden 43 Gewichtsteile Ni- trososulfopropylbutylanilin eingetragen in dem Masse, wie die Gelbfärbung verschwindet. Der Farbstoff der Formel:
EMI0002.0001
fällt aus. Er besitzt als Alkali- oder Am moniumsalz eine vorzügliche Löslichkeit und gibt mittelst Chrombeize auf Baumwolle ge druckt sehr gleichmässige, blaue Töne von guter Licht-, Chlor- und Seifenechtheit.
Process for the preparation of a dye of the galloeyanin series. It has been found that valuable dyes of the gallocyanine series are obtained if gallic acid or its derivatives, such as gallamide, gallanilide, gallic acid ester or even pyrogallal and derivatives of these bodies, with nitroso compounds of secondary or tertiary aromatic amines of the general kind Formula:
EMI0001.0013
condensed, where R.
Is hydrogen, alkyl, ogalkyl, 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 gallocyanin 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 naphtholsulfonic acids. The products obtained according to these working methods can, if necessary, be subjected to a subsequent sulphonation.
The dyes obtained in this way are distinguished by 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 nitrososulfopropylbutylaniline.
<I> Example: </I> 17 parts by weight of gallamide are dissolved in 250 parts by weight of hot methanol, and 43 parts by weight of nitrososulfopropylbutylaniline are added to the solution as the yellow coloration disappears. The dye of the formula:
EMI0002.0001
was cancelled. As an alkali or ammonium salt, it has excellent solubility and produces very even, blue tones of good light, chlorine and soap fastness when printed on cotton using a chrome stain.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE173270X | 1932-04-14 | ||
CH169050T | 1933-04-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH173270A true CH173270A (en) | 1934-11-15 |
Family
ID=25718660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH173270D CH173270A (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) | CH173270A (en) |
-
1933
- 1933-04-05 CH CH173270D patent/CH173270A/en unknown
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