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CH202744A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH202744A
CH202744A CH202744DA CH202744A CH 202744 A CH202744 A CH 202744A CH 202744D A CH202744D A CH 202744DA CH 202744 A CH202744 A CH 202744A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
violet
nitrobenzene
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH202744A publication Critical patent/CH202744A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen     Azo-          farbstoff    erhält, wenn man die     Diazoverbin-          dung    des     1-Amino-4-nitrobenzol-2-methylsul-          fons    mit     (2-Äthogy-5-methyl-2'-sulfonsäure)-          diphenylamin    der Formel  
EMI0001.0010     
         vereinigt.    Der neue Farbstoff bildet     ein          dunkles    Pulver,

   das sich in Wasser mit violet  ter Farbe löst und das Wolle und Seide aus  saurem Bade     in        violettblauen    Tönen färbt.  



  <I>Beispiel:</I>  216     Teile        1-Amino-4-nitrobenzol-2-methyl-          sulfon    werden     diazotiert    und in die mineral  saure Lösung dieser     Diazoverbindung die    Lö  sung des     Natriumsalzes    aus. 607     Teilen    (2  Äthogy - 5     -methyl    - 2'-     sulfonsäure)    -     diphenyl-          amin    eingetragen.

   Nachdem die     Farbstoffbil-          dung    beendet ist, wird     abfiltriert,    der Farb-         stoff        in    Wasser suspendiert und durch Ver  rühren mit     einem    Alkali neutral gestellt. Der  Farbstoff wird     eventuell    durch Zusatz eines  Salzes ausgeschieden,     abfiltriert    und ge  trocknet.



  Process for the preparation of an azo dye. It has been found that an azo dye is obtained if the diazo compound of 1-amino-4-nitrobenzene-2-methylsulphone is used with (2-ethogy-5-methyl-2'-sulphonic acid) - diphenylamine formula
EMI0001.0010
         united. The new dye forms a dark powder,

   which dissolves in water with a violet color and dyes the wool and silk from acid baths in violet-blue tones.



  <I> Example: </I> 216 parts of 1-amino-4-nitrobenzene-2-methylsulfone are diazotized and the sodium salt is dissolved in the mineral acidic solution of this diazo compound. 607 parts (2 ethogy - 5-methyl - 2'-sulfonic acid) - diphenyl amine entered.

   When the formation of the dye has ended, it is filtered off, the dye is suspended in water and made neutral by stirring with an alkali. The dye is possibly separated out by adding a salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoverbindung des 1-Amino-4-nitrobenzol- 2-methylsulfons mit (2-Äthogy-5-methyl-2'- sulfonsäure)-diphenylamin der Formel - EMI0001.0045 vereinigt. Der neue Farbstoff bildet ein. dunkles Pulver, PATENT CLAIM: Process for the production of an azo dye, characterized in that the diazo compound of 1-amino-4-nitrobenzene-2-methylsulfone is mixed with (2-ethy-5-methyl-2'-sulfonic acid) diphenylamine of the formula EMI0001.0045 united. The new dye forms a. dark powder, das sich in Wasser mit violetter Farbe löst und das Wolle und Seide aus sau rem Bade in violettblauen Tönen färbt. which dissolves in water with a violet color and dyes the wool and silk from acid baths in violet-blue tones.
CH202744D 1937-03-15 1937-03-15 Process for the preparation of an azo dye. CH202744A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH202744T 1937-03-15
CH200063T 1938-11-09

Publications (1)

Publication Number Publication Date
CH202744A true CH202744A (en) 1939-01-31

Family

ID=25723417

Family Applications (1)

Application Number Title Priority Date Filing Date
CH202744D CH202744A (en) 1937-03-15 1937-03-15 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH202744A (en)

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