CH127717A - Process for the preparation of a water-soluble chromating dye of the triarylmethane series. - Google Patents

Process for the preparation of a water-soluble chromating dye of the triarylmethane series.

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Publication number
CH127717A
CH127717A CH127717DA CH127717A CH 127717 A CH127717 A CH 127717A CH 127717D A CH127717D A CH 127717DA CH 127717 A CH127717 A CH 127717A
Authority
CH
Switzerland
Prior art keywords
water
dye
chromating
soluble
preparation
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH127717A publication Critical patent/CH127717A/en

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Description

  

      Verfahren    zur Darstellung eines wasserlöslichen     Chromierungsfarbstoffes    der       Triarylmethanreihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines wasserlös  lichen     Chromierungsfarbstoffes,    welches  darin besteht, dass man     p-Diäthylphenyl-          amin-di-o-kresotinsäurecarbinol    mit einem  neutralen     Sulfit    behandelt.

      <I>Beispiel:</I>    48 Gewichtsteile     p-Diäthylphenylamin-          di-o-kresotinsäurecarbinol    werden mit 55  Gewichtsteilen     Natriumsulfit    (kristallisiert)  und zirka     1000:    Teilen Wasser unter Rühren  bis zur Lösung erhitzt,     filtriert    und zur  Trockne verdampft. Das eingedampfte Pro  dukt löst sich leicht in Wasser auf, ist farb  los und scheidet beim Ansäuern das ur  sprüngliche     Carbinol        wieder    aus.

   Die     nach-          chromierte    Ausfärbung der     Sulfitverbindung     ist violett und stimmt in allen ihren Eigen-         schaften    mit denen des     Ausgangsfarboffes     überein.



      Process for the preparation of a water-soluble chromating dye of the triarylmethane series. The subject of this additional patent is a process for the preparation of a water-soluble chromating dye, which consists in treating p-diethylphenylamine-di-o-cresotinic acid carbinol with a neutral sulfite.

      <I> Example: </I> 48 parts by weight of p-diethylphenylamine-di-o-cresotinic acid carbinol are heated with 55 parts by weight of sodium sulfite (crystallized) and about 1000 parts of water with stirring until dissolved, filtered and evaporated to dryness. The evaporated product dissolves easily in water, is colorless and separates out the original carbinol when it is acidified.

   The after-chromed coloration of the sulphite compound is violet and corresponds in all of its properties to those of the original color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wasser löslichen Chromierungsfarbstoffes, dadurch gekennzeichnet, dass - man p-Diäthylphenyl- amin-di-o-kresotinsäurecarbinol mit einem neutralen Sulfit behandelt. Das Produkt löst sich leicht in Wasser auf, ist farblos und scheidet beim Ansäuern das ursprüngliche Carbinol wieder aus. Die nachchromierte Ausfärbung der Sulfit- verbindung ist violett und stimmt in allen ihren Eigenschaften mit denen des Ausgangsfarbstoffes überein. Claim: Process for the preparation of a water-soluble chromating dye, characterized in that p-diethylphenylamine-di-o-cresotinic acid carbinol is treated with a neutral sulfite. The product dissolves easily in water, is colorless and, when acidified, releases the original carbinol again. The re-chromed coloration of the sulphite compound is violet and corresponds in all of its properties to those of the original dye.
CH127717D 1926-01-02 1926-12-30 Process for the preparation of a water-soluble chromating dye of the triarylmethane series. CH127717A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE127717X 1926-01-02
CH124354T 1926-12-30

Publications (1)

Publication Number Publication Date
CH127717A true CH127717A (en) 1928-09-17

Family

ID=25710235

Family Applications (1)

Application Number Title Priority Date Filing Date
CH127717D CH127717A (en) 1926-01-02 1926-12-30 Process for the preparation of a water-soluble chromating dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH127717A (en)

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