CH211811A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211811A
CH211811A CH211811DA CH211811A CH 211811 A CH211811 A CH 211811A CH 211811D A CH211811D A CH 211811DA CH 211811 A CH211811 A CH 211811A
Authority
CH
Switzerland
Prior art keywords
azo dye
ethyloxethylaminobenzene
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 CH211811A publication Critical patent/CH211811A/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

       

  <B>Zusatzpatent</B> zum Hauptpatent Nr. 203950.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen     neuen     wertvollen     Azofarbstoff    erhält, wenn man       Äthyloxyäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2-chlor-4-nitrobenzols    und       Bernsteinsäureanhydrid    derart aufeinander  einwirken lässt,

   dass der saure Bernsteinsäure  ester des     Äthyloxäthylaminobenzols    gebildet  wird und der     Diazorest    in     4-Stellung    zur ter  tiären     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 265 Teile des sauren     Bern-          steinsäureesters    des     Äthyloxäthylaminoben-          zols,    erhalten durch Umsetzung von     Bern-          steinsäurea.nhydrid    mit     Äthyloxäthylamino-          benzol,    der in Form einer     wässrigen    Lösung  eines     Ammoniumsalzes    vorliegt, ein.

   Man  führt die     Kupplung    durch längeres Rühren    zu Ende und kann auch allenfalls neutrali  sierende Mittel, wie z. B.     Natriumacetat,    zu  geben. Der Farbstoff wird dann     abfiltriert     und etwas mit Wasser     gewaschen.    Man ver  rührt ihn dann mit einer     Natriumchlorid-          lösung    und stellt mit     Natriumcarbonat    oder  mit Ammoniak auf den     Neutralpunkt.  



  <B> Additional patent </B> to main patent no. 203950. Process for the production of an azo dye. It has been found that a new valuable azo dye is obtained if ethyloxyethylaminobenzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and succinic anhydride, act on one another in such a way that

   that the acid succinic acid ester of Äthyloxäthylaminobenzols 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, in the form of an alkali salt, dissolves in water with a red color and dyes acetate rayon from an aqueous solution in red shades.



  <I> Example: </I> 265 parts of the acidic succinic acid ester of ethyloxethylaminobenzene are added to the diazo solution which is prepared on 172.5 parts of 1-amino-2-chloro-4-nitrobenzene Reaction of succinic anhydride with ethyloxethylamino-benzene, 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. B. sodium acetate to give. The dye is then filtered off and washed a little with water. It is then stirred with a sodium chloride solution and set to neutral with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Äthyloxäthylaminobenzol, die Diazoverbin- dung des 1-Amino-2-chlor-4-nitrobenzols und Bernsteinsäureanhydrid derart aufeinander einwirken lässt, dass der saure Bernsteinsäure ester des Äthyloxäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur ter tiären Aminogruppe eintritt. PATENT CLAIM: A process for the production of an azo dye, characterized in that ethyloxethylaminobenzene, the diazo compound of 1-amino-2-chloro-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 the diazo radical occurs in position 4 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 obtained in this way forms a dark powder which, in the form of an alkali salt, dissolves in water with a red color and dyes acetate rayon from an aqueous solution in red shades.
CH211811D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211811A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211811T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211811A true CH211811A (en) 1940-10-15

Family

ID=25724602

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211811D CH211811A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211811A (en)

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