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CH197204A - Process for the production of an acidic wool dye. - Google Patents

Process for the production of an acidic wool dye.

Info

Publication number
CH197204A
CH197204A CH197204DA CH197204A CH 197204 A CH197204 A CH 197204A CH 197204D A CH197204D A CH 197204DA CH 197204 A CH197204 A CH 197204A
Authority
CH
Switzerland
Prior art keywords
production
dye
acidic
wool dye
acidic wool
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 CH197204A publication Critical patent/CH197204A/en

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Description

  

  Verfahren zur Herstellung eines sauren     Wollfarbstoffes.       Vorliegendes Patent bezieht     sich    auf     ein     Verfahren zur     Herstellung        eines    sauren     Woll-          farbstoffes,    dadurch gekennzeichnet,     @dass     man 1     Mol.        4.4'-Dichlor-3.3'-dinitrodiphe-          nyIsulfon    mit 2     Mol.        4-Aminodiphenylamin-          2-sulfonsäure    kondensiert.  



  Der so erhaltene     Farbstoff    färbt Wolle  aus saurem Bade in gelbbraunen Tönen von  hervorragenden Echtheitseigenschaften.  



  <I>Beispiel:</I>  28;6     Teile        4-aminodiphenylamin-2-sulfon-          saures    Natrium werden in der etwa zehn  fachen Menge     Wasser        gelöst.        Hierauf    fügt  man 18,8 Teile     4.4'-Dichlar-3.3'-dinitro-          diphenylsulfon,    10 Teile     Natriumacetat        und     etwa 250     Teile    Alkohol hinzu und erhitzt  die Mischung mehrere Stunden     unter    Rück-         flusskühlung    zum Sieden.

   Dann     wird    der  Alkohol     abdestilliert,    die     zurückbleibende          wässerige    Lösung filtriert und     aus    dem Fil  trat der     gebildete        Farbstoff    durch     Aussalzen          abgeschieden.  



  Process for the production of an acidic wool dye. The present patent relates to a process for the production of an acidic wool dye, characterized in that 1 mole of 4,4'-dichloro-3,3'-dinitrodipheny-sulfone is condensed with 2 moles of 4-aminodiphenylamine-2-sulfonic acid.



  The dye obtained in this way dyes wool from an acid bath in yellow-brown shades with excellent fastness properties.



  <I> Example: </I> 28; 6 parts of 4-aminodiphenylamine-2-sulfonic acid sodium are dissolved in about ten times the amount of water. 18.8 parts of 4,4'-dichlar-3.3'-dinitro-diphenylsulfone, 10 parts of sodium acetate and about 250 parts of alcohol are then added and the mixture is heated to the boil for several hours under reflux.

   The alcohol is then distilled off, the aqueous solution that remains is filtered and the dye formed is deposited from the fil by salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines sauren Wollfarbstoffes, dadurch gekennzeiohnet, dass man 1 Mol. 4.4'-Dichlor-3.3'-dinitrodiphe- nylsulfon mit 2 Mol. 4-Amino,diphenylamin- 2-sulfonsäuTe kondensiert. Der so erhaltene Farbstoff färbt Wolle aus saurem Bade in :gelbbraunen Tönen von hervorragenden Echtheitseigenschaften. PATENT CLAIM: Process for the production of an acidic wool dye, characterized in that 1 mole of 4,4'-dichloro-3,3'-dinitrodiphenylsulfone is condensed with 2 moles. 4-amino, diphenylamine-2-sulfonic acid. The dye thus obtained dyes wool from an acid bath in yellow-brown shades with excellent fastness properties.
CH197204D 1935-08-13 1937-02-15 Process for the production of an acidic wool dye. CH197204A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE193627X 1935-08-13
DE197204X 1936-02-18

Publications (1)

Publication Number Publication Date
CH197204A true CH197204A (en) 1938-04-15

Family

ID=25757662

Family Applications (1)

Application Number Title Priority Date Filing Date
CH197204D CH197204A (en) 1935-08-13 1937-02-15 Process for the production of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH197204A (en)

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