CH211807A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211807A
CH211807A CH211807DA CH211807A CH 211807 A CH211807 A CH 211807A CH 211807D A CH211807D A CH 211807DA CH 211807 A CH211807 A CH 211807A
Authority
CH
Switzerland
Prior art keywords
azo dye
yellow
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 CH211807A publication Critical patent/CH211807A/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

Description

  

  <B>Zusatzpatent</B> zum hauptpatent Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man       Äthyloxäthylaminobenzol,    die     Diazoverbin-          dung    des     1-Amir)o-3-nitro-6-methoxybenzols     und     Phthalsäureanhydrid    derart aufeinander  einwirken lässt,

   dass der saure     Phthalsäure-          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 Alkali  salzes in Wasser mit     gelboranger    Farbe löst  und     Acetatkunstseide    aus wässeriger Lösung  in gelborangen Tönen färbt.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man aus 168 Teilen       1-Amino-3-nitro-6-methoxybenzol    herstellt,  trägt man 313 Teile des sauren     Phthalsäure-          esters    des     Äthyloxäthylaminobenzols,    erhalten  durch Umsetzung von     Phthalsäureanhydrid     mit     Äthyloxäthylaminobenzol,    der in Form  einer wässerigen Lösung seines Ammonium  salzes 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-Natrium-          carbonat    oder mit Ammoniak auf den Neutral  punkt.



  <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 ethyloxethylaminobenzene, the diazo compound of 1-amir) o-3-nitro-6-methoxybenzene and phthalic anhydride are allowed to 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 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 salt in water with a yellow-orange color and dyes acetate rayon from an aqueous solution in yellow-orange shades.



  <I> Example: </I> 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-3-nitro-6-methoxybenzene , which is in the form of an aqueous solution of its 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 set to neutral with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRÜCH: Verfahren zur Herstellung eines Azofarb- etoffes, dadurch gekennzeichnet, dass man Äthyloxäthylaminobenzol, die Diazoverbin- dung des 1-Amino-3-nitro-6-methoxybenzols und Phthalsäureanhydrid derart aufeinander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that ethyloxethylaminobenzene, the diazo compound of 1-amino-3-nitro-6-methoxybenzene and phthalic anhydride are allowed to act on one another dass der saure Phthalsäure- ester des Äthyloxäthylaminobenzols gebildet wird und der Diazorest in 4-Stellung zur ter tiären Aminogruppe eintritt. Der so erhaltene Farbstoff bildet ein dunk les Pulver, das sich in Form eines Alkali salzes in Wasser mit gelboranger Farbe löst und Acetatkunstseide aus wässeriger Lösung in gelborangen Tönen färbt. that the acidic phthalic acid ester of Äthyloxäthylaminobenzols 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 yellow-orange color and dyes acetate rayon from an aqueous solution in yellow-orange tones.
CH211807D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211807A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211807T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211807A true CH211807A (en) 1940-10-15

Family

ID=25724598

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211807D CH211807A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211807A (en)

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