CH211812A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211812A
CH211812A CH211812DA CH211812A CH 211812 A CH211812 A CH 211812A CH 211812D A CH211812D A CH 211812DA CH 211812 A CH211812 A CH 211812A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
ethyloxethylaminobenzene
preparation
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 CH211812A publication Critical patent/CH211812A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man       Athyloxäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2-methoxy-4-nitrobenzols     und     Bernsteinsäureanhydrid    derart aufeinan  der einwirken lässt,

   dass der saure Bernstein  säureester des     Äthyloxäthylaminobenzols    ge  bildet 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  kalisa.lzes in Wasser mit roter Farbe löst und       Acetatkunstseide        aus    wässriger Lösung in  roten Tönen färbt.  



       Beispiel:     In die     Diazolösung,    die man aus 168 Teilen       1-Amino-2-methoxy-4-nitrobenzol    herstellt,  trägt man 265 Teile des sauren Bernstein  säureesters des     Äthyloxäthylaminobenzols,     erhalten durch Umsetzung von     Bernstein-          säureanhydrid    mit     Athyloxäthylaminoben-          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     Natriumchloridlösung    und  stellt mit     Natriumcarbonat    oder mit Ammo  niak auf den     Neutralpunkt.  



      Additional patent 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 ethyloxethylaminobenzene, the diazo compound of 1-amino-2-methoxy-4-nitrobenzene and succinic anhydride, is allowed to act on one another,

   that the acid succinic acid ester of Äthyloxäthylaminobenzols ge forms 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 in water with a red color and dyes acetate artificial silk from an aqueous solution in red tones.



       Example: In the diazo solution, which is prepared from 168 parts of 1-amino-2-methoxy-4-nitrobenzene, 265 parts of the acidic succinic acid ester of ethyloxäthylaminobenzols, obtained by reacting succinic anhydride with ethyloxäthylaminobenzene, are carried in the form an aqueous solution of an ammonium salt is present. 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 Äthyloxäthylaminobenzol, die Diazoverbin- dung des 1- Amino-2-methoxy-4-nitrobenzols und Bernsteinsäureanhydrid derart aufein ander einwirken lässt, dass der saure Bern steinsäureester des Äthyloxäthylaminobenzols gebildet wird und der Diazorest in 4-Stel- lung zur tertiären Aminogruppe eintritt. PATENT CLAIM: Process for the production of an azo dye, characterized in that ethyloxethylaminobenzene, the diazo compound of 1-amino-2-methoxy-4-nitrobenzene and succinic anhydride are allowed to act on one another in such a way that the acidic succinic acid ester of ethyloxethylaminobenzene is formed and the diazo radical is in the 4-position to the tertiary amino group. 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. The dye thus obtained forms a dark powder which dissolves in the form of an alkali salt in water with a red color and dyes acetate rayon from aqueous solution in red tones.
CH211812D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211812A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211812T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211812A true CH211812A (en) 1940-10-15

Family

ID=25724603

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211812D CH211812A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211812A (en)

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