CH211821A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211821A
CH211821A CH211821DA CH211821A CH 211821 A CH211821 A CH 211821A CH 211821D A CH211821D A CH 211821DA CH 211821 A CH211821 A CH 211821A
Authority
CH
Switzerland
Prior art keywords
butylogethylaminobenzene
azo dye
preparation
dye
diazo
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 CH211821A publication Critical patent/CH211821A/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

Description

  

  <B>Zusatzpatent</B>     zum        Hauptpatent    Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstoifes.       Es wurde gefunden, dass man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man       Butylogäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2-chlor-4-nitrobenzols    und       Maleinsäureanhydrid    derart aufeinander ein  wirken lässt,

   dass der saure     Maleinsäureester     des     Butylogäthylaminobenzols    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 roter Farbe löst und       Acetatkunstseide    aus wässriger Lösung in  roten Tönen färbt.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man auf 172,5  Teilen     1-Amino-2-chlor-4-nitrobenzol    her  stellt, trägt man 291 Teile des sauren       Maleinsäureesters    des     Butylogäthylaminoben-          zols,    erhalten durch Umsetzung von     Malein-          säureanhydrid    mit     Buthylogäthylaminoben-          zol,    der in Form einer     wässrigen    Lösung eines       Ammoniumsalzes    vorliegt, ein.

   Man führt die  Kupplung durch längeres     Rühren    zu Ende    und kann auch allenfalls neutralisierende  Mittel, wie z. B.     Natriumacetat,    zugeben.  Der Farbstoff wird dann     abfiltriert    und       etwas    mit Wasser gewaschen. Man verrührt  ihn dann mit einer     Natriumchloridl'ösung    und  stellt mit     Natriumearbonat    oder mit Ammo  niak 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 butylogethylaminobenzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and maleic anhydride, act on one another in such a way that

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



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



  <I> Example: </I> In the diazo solution, which is prepared on 172.5 parts of 1-amino-2-chloro-4-nitrobenzene, 291 parts of the acidic maleic acid ester of butylogethylaminobenzene, obtained by reacting Maleic anhydride with buthylogethylaminobenzene, which is in the form of an aqueous solution of an ammonium salt.

   The coupling is completed by prolonged stirring and, if necessary, neutralizing agents, such as. 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 with ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Bu- tylogäthylaminobenzol, die Diazoverbindung des 1 - Amino - 2 - chlor - 4 - nitrobenzols und Maleinsäureanhydrid derart aufeinander ein wirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that butylogethylaminobenzene, the diazo compound of 1 - amino - 2 - chloro - 4 - nitrobenzene and maleic anhydride are allowed to act on one another, dass der saure Maleinsäureester des Butylogäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur tertiären Aminogruppe eintritt. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sieh in Form eines Al kalisalzes in Wasser mit roter Farbe löst und Acetatkunstseide aus wässriger Lösung in roten Tönen färbt. that the acidic maleic acid ester of butylogethylaminobenzene 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 metal salt in water with a red color and dyes acetate rayon from aqueous solution in red shades.
CH211821D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211821A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211821T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211821A true CH211821A (en) 1940-10-15

Family

ID=25724612

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211821D CH211821A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211821A (en)

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