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CH211808A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211808A
CH211808A CH211808DA CH211808A CH 211808 A CH211808 A CH 211808A CH 211808D A CH211808D A CH 211808DA CH 211808 A CH211808 A CH 211808A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
preparation
diazo
ethyloxethylaminobenzene
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 CH211808A publication Critical patent/CH211808A/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
    • C09B43/22—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 having the carboxylic group directly attached to an aromatic carbocyclic ring

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     rnan          Äthyloxäthylaminoberrzol,    die     Diazoverbin-          dung    des     1-Amino-4-nitro-2-methoxybenzols     und     Phthalsäureanhydrid    derart aufeinander  einwirken lässt,

   dass der saure     Phthalsäure-          ester    des     Äthyloxäthylaminobenzols    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 Alkali  salzes in Wasser mit roter Farbe löst und       Acetatkurrstseide    aus wässriger Lösung in roten  Tönen färbt.  



       Beispiel:     In die     Diazolösung,    die man aus 168 Teilen       1-Amino-4-nitro-2-methoxybenzol    herstellt,  trägt man 313 Teile des sauren     Phthalsäure-          esters    des     Äthyloxäthylaminobenzols,    erhalten  <I>durch</I> Umsetzung von     Phthalsäureanhydrid     mit     Äthyloxäthylaminobenzol,    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 ge  waschen. Man verrührt ihn dann mit einer       Natriumchloridlösung    und stellt mit     Natrium-          carbonat    oder mit Ammoniak auf den Neutral  punkt.



  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 ethyloxethylaminoberrzene, the diazo compound of 1-amino-4-nitro-2-methoxybenzene and phthalic anhydride, act on one another in such a way that

   that the acidic phthalic acid ester of Äthyloxäthylaminobenzols is formed and the diazo radical occurs in position 4 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 silk from aqueous solution in red shades.



       Example: 313 parts of the acidic phthalic acid ester of ethyloxethylaminobenzene, obtained by reacting phthalic anhydride with ethyloxethylaminobenzene, are added to the diazo solution which is prepared from 168 parts of 1-amino-4-nitro-2-methoxybenzene 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. 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-4-rritro-2-methoxybenzols und Phtbalsäureanhydrid derart aufeinander einwirken lässt, dass der saure Phthalsäure- ester des Äthylogäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur tertiären Aminogruppe eintritt. PATENT CLAIM: A process for the production of an azo dye, characterized in that ethyloxethylaminobenzene, the diazo compound of 1-amino-4-ritro-2-methoxybenzene and phthalic anhydride are allowed to act on one another in such a way that the acidic phthalic acid ester of ethylo-ethylamine is formed and the diazo radical enters the 4-position to the tertiary amino group. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sich in Form eines Alkali salzes in Wasser mit roter Farbe löst und Acetatkunatseide 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 silk from aqueous solution in red shades.
CH211808D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211808A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211808T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211808A true CH211808A (en) 1940-10-15

Family

ID=25724599

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211808D CH211808A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211808A (en)

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