CH176820A - Process for the production of an indigoid vat dye. - Google Patents

Process for the production of an indigoid vat dye.

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Publication number
CH176820A
CH176820A CH176820DA CH176820A CH 176820 A CH176820 A CH 176820A CH 176820D A CH176820D A CH 176820DA CH 176820 A CH176820 A CH 176820A
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CH
Switzerland
Prior art keywords
production
vat dye
dye
indigoid vat
indigoid
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 CH176820A publication Critical patent/CH176820A/en

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Description

  

  Verfahren zur Herstellung eines     indigoiden        Küpenfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines     indigoiden          Küpenfarbstoffes,    dadurch gekennzeichnet,  dass man     5-Methoxy-6.7-dicbloroxythionaph-          then    mit     2.1-Naphthoxythiophernanil    konden  siert.  



  Der so erhaltene Farbstoff stellt ein braun  gefärbtes Pulver dar und färbt Baumwolle  aus orangen     Küpe    in braunen Törnen von  guten     Echtheiten    an. Er löst sich in Schwefel  säure mit dunkelblauer Farbe.  



  <I>Beispiel:</I>       2.3-Dichloranisol-4-sulfosaures    Natrium,  welches durch     Sulfonierung    und nachfolgende       Alkylierung    von     2.3-Dicblorphenol    leicht  erhältlich ist, wird durch Erhitzen mit     Phos-          phorpentachlorid    in das entsprechende     Sulfo-          chorid    übergeführt. Dieses     Sulfochlorid    lässt  sich ferner auch durch Behandlung von     2.3-          Dichloranisol    mit     Chlorsulfonsäure    darstellen.

      Das hieraus durch Reduktion erhaltene     Mer-          kaptan    wird in alkalischer Lösung mit Mono  chloressigsäure in die     Thioglykolsäure    über  geführt. Die     1-Methoxy-2.3-dichlorbernzol-4-          thioglykelsäure    zeigt, aus 50     0%iger    Essig  säure umkristallisiert, einen Schmelzpunkt  von 159 0 C. Aus der     Thioglykolsäure    kann  dann mit Hilfe von     Phosphortrichlorid    und  Aluminiumchlorid das     5-lllethöxy-6.7-dichlor-          oxythionaphthen    dargestellt werden.  



  12,5 kg     5-13/Iethoxy-6.7-dichloroxythio-          naphten    und 16;6 kg     2.1-Naphthoxythio-          phenanil    werden in     1,00    kg Eisessig suspen  diert und 6 Stunden unter Rühren auf 100 0 C  erhitzt. Nach dem Erkalten wird der gebil  dete Farbstoff abgesaugt.



  Process for the production of an indigoid vat dye. The present patent relates to a process for the production of an indigoid vat dye, characterized in that 5-methoxy-6.7-dicbloroxythionaph- thene is condensed with 2.1-naphthoxythiophernanil.



  The dye thus obtained is a brown-colored powder and dyes cotton from an orange vat in brown grains of good fastness properties. It dissolves in sulfuric acid with a dark blue color.



  <I> Example: </I> 2.3-dichloroanisole-4-sulphonic acid sodium, which is easily obtainable by sulphonation and subsequent alkylation of 2,3-dicblophenol, is converted into the corresponding sulphochloride by heating with phosphorus pentachloride. This sulfochloride can also be prepared by treating 2,3-dichloroanisole with chlorosulfonic acid.

      The mercaptan obtained from this by reduction is converted into thioglycolic acid in an alkaline solution with monochloroacetic acid. The 1-methoxy-2,3-dichlorobernzene-4-thioglycolic acid shows, recrystallized from 50 0% acetic acid, a melting point of 159 0 C. From the thioglycolic acid the 5-lllethöxy-6.7-dichloro can then with the help of phosphorus trichloride and aluminum chloride oxythionaphthen are represented.



  12.5 kg of 5-13 / ethoxy-6.7-dichloroxythio naphthene and 16; 6 kg of 2.1-naphthoxythiophene are suspended in 1.00 kg of glacial acetic acid and heated to 100 ° C. for 6 hours while stirring. After cooling, the dye formed is filtered off with suction.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines indigoiden Küpenfarbstoffes, dadurch gekennzeichnet, dass man 5-Methoxy-6.7-dichloroxythionaph- then mit 2.1-Naphthogythiophenanil konden siert. Der so erhaltene Farbstoff stellt ein braun gefärbtes Pulver dar und färbt Baumwolle aus oranger güpe in braunen Tönen von guten Echtheiten an. Er löst sich in Schwe felsäure mit dunkelblauer Farbe. PATENT CLAIM: Process for the production of an indigoid vat dye, characterized in that 5-methoxy-6.7-dichloroxythionaphthene is condensed with 2.1-naphthogythiophenanil. The dye obtained in this way is a brown-colored powder and dyes cotton from orange güpe in brown shades of good fastness properties. It dissolves in sulfuric acid with a dark blue color.
CH176820D 1933-06-08 1934-05-25 Process for the production of an indigoid vat dye. CH176820A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176820X 1933-06-08
CH174656T 1934-05-25

Publications (1)

Publication Number Publication Date
CH176820A true CH176820A (en) 1935-04-30

Family

ID=25719559

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176820D CH176820A (en) 1933-06-08 1934-05-25 Process for the production of an indigoid vat dye.

Country Status (1)

Country Link
CH (1) CH176820A (en)

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