CH211816A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211816A
CH211816A CH211816DA CH211816A CH 211816 A CH211816 A CH 211816A CH 211816D A CH211816D A CH 211816DA CH 211816 A CH211816 A CH 211816A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
diazo
way
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 CH211816A publication Critical patent/CH211816A/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/18—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group
    • C09B43/20—Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group with monocarboxylic acids, carbamic acid esters or halides, mono- isocyanates or haloformic acid esters
    • C09B43/202—Aliphatic, cycloaliphatic, araliphatic carboxylic acids

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. 208950.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man       Methylogäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-4-nitrobenzol-2-methyl-          sulfons    und     Maleinsäureanhydrid    derart auf  einander einwirken lässt,

   dass der saure       Maleinsäureester    des     Methylogäthylamino-          benzols    gebildet wird und der     Diazorest    in       4-Stellung    zur     tertiären        Aminogruppe    ein  tritt.  



  Der so erhaltene Farbstoff bildet ein  dunkles Pulver, das sich in Form eines Al  kalisalzes in Wasser mit violetter Farbe löst  und     Acetatkunstseide    aus wässriger Lösung  in violetten Tönen färbt.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man aus 216 Tei  len     1-Amino-4-nitrobenzol-2-mehylsulfon    her  stellt, trägt man 249 Teile des sauren     Malein-          säureesters    des     Methylogäthylaminobenzols,     erhalten durch Umsetzung von     Maleinsäure-          anhydrid    mit     Methylogäthylaminobenzol,    der  in Form einer     wässrigen    Lösung eines     Ammo-          niumsalzes    vorliegt, ein.

   Man führt die Kupp  lung durch längeres     Rühren    zu Ende und    kann auch allenfalls neutralisierende Mittel,  wie z. B.     Natriumacetat,    zugeben. Der Farb  stoff wird dann     abfiltriert    und     etwas    mit  Wasser gewaschen. Man verrührt ihn dann  mit einer     Natriumchloridlösung    und stellt mit       Natriumcarbonat    oder mit Ammoniak auf  den     Neutralpunkt.  



  <B> Additional patent </B> to main patent no. 208950. Process for the production of an azo dye. It has been found that a new, valuable azo dye is obtained if methylogethylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene-2-methylsulfone and maleic anhydride are allowed to act on one another in such a way that

   that the acidic maleic acid ester of methylogäthylamino- benzene is formed and the diazo radical occurs in the 4-position to the tertiary amino group.



  The dye obtained in this way forms a dark powder which dissolves in the form of an alkali salt in water with a violet color and dyes acetate artificial silk from an aqueous solution in violet tones.



  <I> Example: </I> In the diazo solution, which is made from 216 parts of 1-amino-4-nitrobenzene-2-methylsulfone, one carries 249 parts of the acidic maleic acid ester of methylogethylaminobenzene, obtained by reacting maleic acid - Anhydride with Methylogäthylaminobenzene, which is in the form of an aqueous solution of an ammonium salt, a.

   You lead the hitch ment by prolonged stirring to the end and may also neutralizing agents such. B. sodium acetate, add. The dye is then filtered off and washed a little with water. It is then stirred with a sodium chloride solution and adjusted to the neutral point with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Methylogäthylaminobenzol, die Diazoverbin- dung des 1-Amino-4-nitrobenzol-2-methylsul- fons und Maleinsäureanhydrid derart auf einander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that methylogethylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene-2-methylsulfone and maleic anhydride are allowed to act on one another in such a way that dass der saure Maleinsäureester des Methylogäthylaminoben- zols gebildet wird und der Diazorest in 4- Stellung zur tertiären Aminogruppe eintritt. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sich in Form eines Al kalisalzes in Wasser mit violetter Farbe löst und Acetatkunstseide aus wässriger Lösung in violetten Tönen färbt. that the acidic maleic acid ester of Methylogäthylaminoben- zols is formed and the diazo radical occurs in the 4-position to the tertiary amino group. The dye obtained in this way forms a dark powder which dissolves in the form of an alkali salt in water with a violet color and dyes acetate artificial silk from an aqueous solution in violet tones.
CH211816D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211816A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211816T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211816A true CH211816A (en) 1940-10-15

Family

ID=25724607

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211816D CH211816A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211816A (en)

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