CH99678A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH99678A
CH99678A CH99678DA CH99678A CH 99678 A CH99678 A CH 99678A CH 99678D A CH99678D A CH 99678DA CH 99678 A CH99678 A CH 99678A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
azo dye
chloro
produced
Prior art date
Application number
Other languages
German (de)
Inventor
Griesheim-Elektron Chem Fabrik
Original Assignee
Griesheim Elektron Chem Fab
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 Griesheim Elektron Chem Fab filed Critical Griesheim Elektron Chem Fab
Publication of CH99678A publication Critical patent/CH99678A/en

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    man zu sehr       bäucheehten    Farbstoffen von     Alizarinnuan-          cen    gelangt, wenn man die     Diazoverbindung     von     5-Chlor-2-toluidin    mit dem     4-Chlor-3-          foluidid    der 2     -3-Oxyna-phto#siiure    kuppelt.

    Der Farbstoff 'kann für sich. allein zwecks       Verwendun &     als roter Pigmentfarbstoff     her-          g    stellt worden, er kann aber auch.     auf    der       vegetabilischen    Faser erzeugt werden.

   Die       Bäuchechtheit    dieses Farbstoffes ist im  Gegensatz zu derjenigen ähnlich     zuisammen-          Ups          t.'        -.        etzter    Farbstoffe ganz     überrasehend.       <I>Beispiel:

  </I>  Die aus 14,1     gr        5-CI-ilor-2--toluidin    in<B>üb-</B>  licher Weise dargestellte     Diazoverbind-ting          112isst    man unter Rühren in eine     wüsserige          Suispension    von<B>33</B>     gr    2     -3-Oxynaphto#siure-          ,l-Clilor-3-toluidid    einfliessen, bereitet durch  Auflösen in Natronlauge und Wiederaus-    fällen mit verdünnter Essigsäure. Der     Farb-          s        toff    scheidet sich. in roten Flocken aus;  darauf wird filtriert, gewaschen und ge  trocknet.



  Process for the preparation of an azo dye. It has been found that very belly dyes of alizarinnuance can be obtained if the diazo compound of 5-chloro-2-toluidine is coupled with the 4-chloro-3-foluidide of 2 -3-oxyna-phtoic acid.

    The dye 'can for itself. produced solely for the purpose of use & as a red pigment, but it can also. are produced on the vegetable fiber.

   The stomach-fastness of this dye is similar to that of the other, Ups t. ' -. Last dyes quite surprising. <I> example:

  The diazo compound 112 made from 14.1 g of 5-CI-ilor-2-toluidine is poured into an aqueous suspension of <B> 33 <B> while stirring Pour in / B> gr 2 -3-Oxynaphto # siure-, l-Clilor-3-toluidid, prepared by dissolving in sodium hydroxide solution and reprecipitation with dilute acetic acid. The dye separates. made in red flakes; it is then filtered, washed and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines A7o-' farbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 5-Chlor-2-i-oluidins mit dem 4-Chlor-3-tolitidid der<B>2 -</B> 3-Oxy- naphto#s;#iure kombiniert. Der neue Farbstoff hat Alizarinnuance und die mit ihm auf der Faser erzeugten Färbungen sind gegenüber den mit bekannten ähnlich zusammengesetz ten Farbstoffen hergestellten vollkommeD bäuelieclit. PATENT CLAIM: A process for the production of an A7o 'dye, characterized in that the diazo compound of 5-chloro-2-i-oluidine with the 4-chloro-3-tolitidide of <B> 2 - </B> 3-oxy - naphto # s; #iure combined. The new dye has an alizarin nuance and the colorations produced with it on the fiber are completely structural compared to those produced with known similarly composed dyes.
CH99678D 1921-09-21 1922-06-20 Process for the preparation of an azo dye. CH99678A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE99678X 1921-09-21
CH99284T 1922-06-20

Publications (1)

Publication Number Publication Date
CH99678A true CH99678A (en) 1923-06-16

Family

ID=25705532

Family Applications (1)

Application Number Title Priority Date Filing Date
CH99678D CH99678A (en) 1921-09-21 1922-06-20 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH99678A (en)

Similar Documents

Publication Publication Date Title
CH99678A (en) Process for the preparation of an azo dye.
CH99284A (en) Process for the preparation of an azo dye.
CH99681A (en) Process for the preparation of an azo dye.
CH99676A (en) Process for the preparation of an azo dye.
CH99679A (en) Process for the preparation of an azo dye.
CH99677A (en) Process for the preparation of an azo dye.
CH99682A (en) Process for the preparation of an azo dye.
CH99680A (en) Process for the preparation of an azo dye.
CH99683A (en) Process for the preparation of an azo dye.
CH137106A (en) Process for the preparation of an azo dye.
CH265740A (en) Process for the preparation of a water-soluble dye of the naphthoquinone series.
CH100377A (en) Process for the preparation of an azo dye.
CH101613A (en) Process for the preparation of a monoazo dye.
CH265739A (en) Process for the preparation of a water-soluble dye of the naphthoquinone series.
CH137107A (en) Process for the preparation of an azo dye.
CH99282A (en) Process for the preparation of an azo dye.
CH199655A (en) Process for preparing a disazo dye.
CH130328A (en) Process for the preparation of an azo dye.
CH265738A (en) Process for the preparation of a water-soluble dye of the naphthoquinone series.
CH130325A (en) Process for the preparation of an azo dye.
CH200370A (en) Process for the preparation of a chromable o-oxydisazo dye.
CH135975A (en) Process for the preparation of an azo dye.
CH137109A (en) Process for the preparation of an azo dye.
CH137104A (en) Process for the preparation of an azo dye.
CH130324A (en) Process for the preparation of an azo dye.