CH197206A - Process for the production of an acidic wool dye. - Google Patents

Process for the production of an acidic wool dye.

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Publication number
CH197206A
CH197206A CH197206DA CH197206A CH 197206 A CH197206 A CH 197206A CH 197206D A CH197206D A CH 197206DA CH 197206 A CH197206 A CH 197206A
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 CH197206A publication Critical patent/CH197206A/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       4-Chlor-3-nitroacetophenon    mit     4-Amino,di-          phenylamin-2-sulfonsäure    kondensiert.  



  Der so erhaltene Farbstoff färbt Wolle  aus saurem Bade in gelbbraunen Tönen von  sehr guter Egalität und     Lichtechtheit.     



  <I>Beispiel:</I>  <B>28,6</B> Teile     4-amino.diphenylamin-2-sulfon-          saures        Natrium    werden in der     zehnfachen     Menge Wasser gelöst. Dann fügt man  20 Teile     4-Chlor-3--nitroacetophenon    und  10 Teile     Natriumacetat    zu und erhitzt das       Gemisch    mehrere Stunden unter Rückfluss-         kühlung        .zum    Sieden.

   Hierauf wird     -der        ge-          bildete    Farbstoff aus der filtrierten wässe  rigen Lösung durch     Eindampfen    oder Aus  salzen     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 4-chloro-3-nitroacetophenone is condensed with 4-amino, diphenylamine-2-sulfonic acid.



  The dye obtained in this way dyes wool from an acid bath in yellow-brown shades of very good levelness and lightfastness.



  <I> Example: </I> <B> 28.6 </B> parts of 4-amino.diphenylamine-2-sulfonic acid sodium are dissolved in ten times the amount of water. Then 20 parts of 4-chloro-3-nitroacetophenone and 10 parts of sodium acetate are added and the mixture is heated to boiling under reflux for several hours.

   The dyestuff formed is then deposited from the filtered aqueous solution by evaporation or salting out.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines sauren Wollfarbstoffes,dadurch gekennzeichnet, dass man 4-Chlor-3-nitroacetophenon mit 4-Amino- diphenylamin-2-sulfonsäure kondensiert. Der so erhaltene Farbstoff färbt Wolle aus saurem Bade in gelbbraunen Tönen von sehr -guter Egalität und Lichtechtheit. PATENT CLAIM: Process for the production of an acidic wool dye, characterized in that 4-chloro-3-nitroacetophenone is condensed with 4-aminodiphenylamine-2-sulfonic acid. The dye obtained in this way dyes wool from an acid bath in yellow-brown shades of very good levelness and lightfastness.
CH197206D 1935-08-13 1937-02-26 Process for the production of an acidic wool dye. CH197206A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE193627X 1935-08-13
DE197206X 1936-03-17

Publications (1)

Publication Number Publication Date
CH197206A true CH197206A (en) 1938-04-15

Family

ID=25757664

Family Applications (1)

Application Number Title Priority Date Filing Date
CH197206D CH197206A (en) 1935-08-13 1937-02-26 Process for the production of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH197206A (en)

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