CH202444A - Process for the production of an acidic wool dye. - Google Patents

Process for the production of an acidic wool dye.

Info

Publication number
CH202444A
CH202444A CH202444DA CH202444A CH 202444 A CH202444 A CH 202444A CH 202444D A CH202444D A CH 202444DA CH 202444 A CH202444 A CH 202444A
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 CH202444A publication Critical patent/CH202444A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B51/00—Nitro or nitroso dyes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

         

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 193627.    Verfahren zur Herstellung eines sauren     Wollfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung     eines    sauren     Woll-          farbstoffes,    dadurch     gekennzeichnet,    dass man  4 .     4'-Dichlor-3    .     3'-dinitrodiphenylsulfogyd     mit     4-Aminodiphenylamin-2-sulfonsäure    kon  densiert.  



  Der so erhaltene Farbstoff färbt Wolle  aus saurem Bade in gelbbraunen Tönen von  hervorragenden Echtheitseigenschaften.         Beispiel:       52,8 Teile     4-Aminodiphenylamin-2-sul-          fonsäure,    36 Teile 4.     4'-Dichlor-3.        3'-dinitro-          diphenylsulfogyd    und 22 Teile wasserfreies       Natriumcarbonat    werden mit etwa 400 Teilen  Wasser mehrere Stunden unter Rühren und       Rückflusskühlung    zum Sieden erhitzt. Nach  dem Erkalten wird der gebildete Farbstoff    durch Zugabe einer geringen Menge von kon  zentriertem Salzwasser abgeschieden, abge  saugt, mit etwa 5%igem Salzwasser ge  waschen und dann getrocknet.



  <B> Additional patent </B> to main patent no. 193627. 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. 4'-dichloro-3. 3'-dinitrodiphenylsulfogyd condenses with 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. Example: 52.8 parts of 4-aminodiphenylamine-2-sulphonic acid, 36 parts of 4. 4'-dichloro-3. 3'-Dinitro-diphenylsulfogyd and 22 parts of anhydrous sodium carbonate are heated to boiling with about 400 parts of water for several hours with stirring and reflux cooling. After cooling, the dye formed is deposited by adding a small amount of concentrated salt water, filtered off with suction, washed with about 5% salt water and then dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines sauren Wollfarbstoffes, dadurch gekennzeichnet, class man 4.4'-Dichlor-3.3'-dinitrodiphenyl- sulfogyd mit 4-Aminodiphenylamin-2-sulfon- säure 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 4.4'-dichloro-3.3'-dinitrodiphenyl sulfogyd is condensed with 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.
CH202444D 1936-12-14 1937-12-13 Process for the production of an acidic wool dye. CH202444A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202444X 1936-12-14
CH193627T 1937-12-13

Publications (1)

Publication Number Publication Date
CH202444A true CH202444A (en) 1939-01-15

Family

ID=25722566

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202444D CH202444A (en) 1936-12-14 1937-12-13 Process for the production of an acidic wool dye.

Country Status (1)

Country Link
CH (1) CH202444A (en)

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