CH211806A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211806A
CH211806A CH211806DA CH211806A CH 211806 A CH211806 A CH 211806A CH 211806D A CH211806D A CH 211806DA CH 211806 A CH211806 A CH 211806A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
methyloxyethylaminobenzene
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 CH211806A publication Critical patent/CH211806A/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

  

      Zusatzpatent    zum Hauptpatent Nr. 208950.    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden, dass man einen     neuen     wertvollen     Azofarbstoff    erhält, wenn man       Methyloxyäthylaminobenzol,    die     Diazover-          bindung    des 1 -     Amino    - 4 -     nitrobenzols    und       Phthalsäureanhydrid    derart aufeinander ein  wirken lässt,

   dass der saure     Phthalsäureester     des     i4ethyloxyäthylaminobenzols    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 W     asser    mit roter Farbe löst und       Acetatkunstseide    aus wässeriger Lösung in  scharlachroten Tönen färbt.  



  <I>Beispiel:</I>  In die     Diazolösung,    die man aus 139 Tei  len     1-Amino-4-nitrobenzol    herstellt, trägt  man 299 Teile des sauren     Phthalsäureesters     des     2llethyloxyäthylaminobenzols,    erhalten  durch Umsetzung von     Phthalsäureanhydrid          tnit        3Tethyloxyäthylaminobenzol,    der in Form  einer wässerigen     Lösung    eines     Ammonium-          en    vorliegt, ein. Man führt die Kupp  lung durch längeres Rühren zu Ende und         kann    auch allenfalls neutralisierende Mittel,  wie z.

   B.     Natriumacetat,    zugeben. Der Farb  stoff wird dann     abfiltriert        und    etwas mit  Wasser gewaschen. Man verrührt ihn dann  mit einer     Natriumchloridlösung        und    stellt mit       Natriumcarbonat    oder mit Ammoniak 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 methyloxyethylaminobenzene, the diazo compound of 1 - amino - 4 - nitrobenzene and phthalic anhydride, can act on one another in such a way that

   that the acidic phthalic ester of i4ethyloxyäthylaminobenzols is formed and the diazo radical occurs in the 4-position to the tertiary amino group.



  The thus obtained. The dye forms a dark powder that dissolves in the form of an alkali salt in water with a red color and dyes acetate artificial silk from an aqueous solution in scarlet shades.



  <I> Example: </I> In the diazo solution, which is produced from 139 parts of 1-amino-4-nitrobenzene, you carry 299 parts of the acidic phthalic acid ester of 2llethyloxyäthylaminobenzols, obtained by reacting phthalic anhydride with 3-thyloxyethylaminobenzene, which is in the form of a aqueous solution of an ammonium is present. You lead the hitch ment by prolonged stirring to the end 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 Methyloxyäthylaminobenzol, die Diazover- bindung des 1 - Amino - 4 - nitrobenzols und Phthalsäureanhydrid derart aufeinander ein wirken lässt, dass der saure Phthalsäureester des Methyloxyäthylaminobenzols gebildet wird, und der Diazorest in 4-Stellung zur ter tiären Aminogruppe eintritt. PATENT CLAIM: Process for the production of an azo dye, characterized in that methyloxyethylaminobenzene, the diazo compound of 1 - amino - 4 - nitrobenzene and phthalic anhydride are allowed to act on one another in such a way that the acidic phthalic acid ester of methyloxyethylaminobenzene is formed, and the diazo radical is formed in 4-position to the tertiary amino group occurs. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sich in Form eines Al kalisalzes in Wasser mit roter Farbe löst und Acetatkunstseide aus wässeriger Lösung in scharlachroten 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 artificial silk from aqueous solution in scarlet shades.
CH211806D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211806A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211806T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211806A true CH211806A (en) 1940-10-15

Family

ID=25724597

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211806D CH211806A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211806A (en)

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