CH170687A - Process for the preparation of a dye of the triarylmethane series. - Google Patents

Process for the preparation of a dye of the triarylmethane series.

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Publication number
CH170687A
CH170687A CH170687DA CH170687A CH 170687 A CH170687 A CH 170687A CH 170687D A CH170687D A CH 170687DA CH 170687 A CH170687 A CH 170687A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
triarylmethane series
triarylmethane
series
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 CH170687A publication Critical patent/CH170687A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Triarylmethanreihe.       Es wurde gefunden, dass man zu einem  wertvollen Farbstoff der     Triarylmethanreihe     gelangt, wenn man 1     Mol.        p-Diäthylamino-          benzaldehyd    mit 2     Mol.        Äthyl-m-tolylamino-          propansulfonsäure    kondensiert und die so  erhältliche     Leukoverbindung    oxydiert.  



  <I>Beispiel:</I>  60 Gewichtsteile des     Natriumsalzes    der       Äthyl-m-tolylarninopropansulfonsäure     
EMI0001.0012     
    werden mit 66 Gewichtsteilen 20     o/oiger     Schwefelsäure, zirka 100 Gewichtsteilen  Wasser und 18 Gewichtsteilen     p-Diäthyl-          aminobenzaldehyd    in üblicher Weise zur       Leukoverbindung    kondensiert. Durch Neutrali  sation mit Alkali und Waschen mit Koch-         salzlösung    erhält man deren     Natronsalz    in  schönen grauglänzenden Kristallen.

   Durch  Oxydation in bekannter Weise wird ein blauer  bronzierender Farbstoff gewonnen;     welcber     in Wasser leicht löslich ist und die tierische  Faser in klaren blauen Tönen anfärbt.



  Process for the preparation of a dye of the triarylmethane series. It has been found that a valuable dye of the triarylmethane series is obtained if 1 mole of p-diethylaminobenzaldehyde is condensed with 2 moles of ethyl m-tolylaminopropanesulfonic acid and the leuco compound thus obtainable is oxidized.



  <I> Example: </I> 60 parts by weight of the sodium salt of ethyl-m-tolylaminopropanesulfonic acid
EMI0001.0012
    are condensed with 66 parts by weight of 20% sulfuric acid, about 100 parts by weight of water and 18 parts by weight of p-diethylaminobenzaldehyde in the usual way to give the leuco compound. Neutralization with alkali and washing with saline solution produces its sodium salt in beautiful, gray-shining crystals.

   A blue bronzing dye is obtained by oxidation in a known manner; which is easily soluble in water and stains the animal fiber in clear blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Farb stoffes der Triarylmethanreihe, dadurch ge kennzeichnet, dass man 1 Mol. p-Diäthyl- aminobenzaldehyd mit 2 Mol. Äthyl-m-tolyl- aminoproparisulfonsäure kondensiert und die so erhältliche Leukoverbindung oxydiert. Der Farbstoff ist ein blaues bronzierendes Pulver, welches in Wasser leicht löslich ist und die tierische Faser in klaren blauen Tönen färbt. Claim: Process for the preparation of a dye of the triarylmethane series, characterized in that 1 mole of p-diethylaminobenzaldehyde is condensed with 2 moles of ethyl m-tolylaminoproparisulfonic acid and the leuco compound thus obtained is oxidized. The dye is a blue bronzing powder, which is easily soluble in water and colors the animal fiber in clear blue tones.
CH170687D 1932-06-25 1933-06-03 Process for the preparation of a dye of the triarylmethane series. CH170687A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE170687X 1932-06-25
CH165834T 1932-09-07

Publications (1)

Publication Number Publication Date
CH170687A true CH170687A (en) 1934-07-15

Family

ID=25718181

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170687D CH170687A (en) 1932-06-25 1933-06-03 Process for the preparation of a dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH170687A (en)

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