CH211805A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211805A
CH211805A CH211805DA CH211805A CH 211805 A CH211805 A CH 211805A CH 211805D A CH211805D A CH 211805DA CH 211805 A CH211805 A CH 211805A
Authority
CH
Switzerland
Prior art keywords
ethyloxyethylaminobenzene
azo dye
dye
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 CH211805A publication Critical patent/CH211805A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00Preparation of azo dyes from other azo compounds
    • C09B43/18Preparation of azo dyes from other azo compounds by acylation of hydroxyl group or of mercapto group
    • C09B43/20Preparation 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
    • C09B43/22Preparation 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)
  • Coloring (AREA)

Description

  

  Zusatzpatent zum Hauptpatent Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstofes.       Es wurde gefunden, dass man     einen    neuen  wertvollen     Azofarbstoff    erhält, wenn man       Äthyloxyäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2-chlor-4-nitrobenzols    und       Phthalsäureanhydrid    derart aufeinander ein  wirken lässt,

   dass der saure     Phthalsäureester     des     Athyloxyäthylaminobenzols    gebildet wird  und der     Diazorest    in     4-Stellung    zur tertiären       Aminogruppe    eintritt.  



  Der so erhaltene Farbstoff bildet ein  dunkles     Pul-er,    das sich in Form eines Al  kalisalzes in Wasser mit roter Farbe löst und       Acetatkunstseide    aus wässeriger     Lösung    in  roten Tönen färbt.

      <I>Beispiel:</I>    In die     Diazolösung,    die man aus 172,5  Teilen     1-Amino-2-chlor-4-nitrobenzol    her  stellt, trägt man     313    Teile des sauren     Phthal-          säureesters    des     Äthyloxyäthylaminobenzols,     erhalten durch Umsetzung von     Phthalsäure-          an.hydrid    mit     Äthyloxyäthylaminobenzol,    der  in Form einer wässerigen Lösung eines Am  moniumsalzes 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     Natriumehloridlösung    und  stellt mit     Natriumearbonat    oder mit Am  moniak 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 ethyloxyethylaminobenzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and phthalic anhydride, act on one another in such a way that

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



  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.

      <I> Example: </I> In the diazo solution, which is prepared from 172.5 parts of 1-amino-2-chloro-4-nitrobenzene, 313 parts of the acidic phthalic acid ester of ethyloxyethylaminobenzene, obtained by reacting Phthalic an.hydride with ethyloxyethylaminobenzene, 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 mixed 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 Athyloxyäthylaminobenzol, die Diazoverbin- dung des 1-Amino-2-chlor-4-nitrobenzols und Phthalsäureanhydrid derart aufeinander ein wirken lässt, dass der saure Phthalsäureester des Äthyloxyäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur tertiären Aminogruppe eintritt. PATENT CLAIM: Process for the production of an azo dye, characterized in that ethyloxyethylaminobenzene, the diazo compound of 1-amino-2-chloro-4-nitrobenzene and phthalic anhydride can act on one another in such a way that the acidic phthalic acid ester of ethyloxyethylaminobenzene is formed and the diazo radical enters the 4-position to the tertiary amino group. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sieh in Form eines Al kalisalzes in Wasser mit roter Farbe löst und Acetatkunstseide aus wässeriger Lösung in roten Tönen färbt. The dye thus obtained 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.
CH211805D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211805A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH211805T 1937-09-18
CH208950T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211805A true CH211805A (en) 1940-10-15

Family

ID=25724596

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211805D CH211805A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211805A (en)

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