CH211815A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211815A
CH211815A CH211815DA CH211815A CH 211815 A CH211815 A CH 211815A CH 211815D A CH211815D A CH 211815DA CH 211815 A CH211815 A CH 211815A
Authority
CH
Switzerland
Prior art keywords
azo dye
dye
preparation
diazo
nitrobenzene
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 CH211815A publication Critical patent/CH211815A/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

Description

  

  Zusatzpatent zum Hauptpatent     Nr.   <B>208950.</B>    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    man einen neuen  wertvollen     Azofarbstoff    erhält, wenn man       A.thyloxä,thylaminobenzol,    die     Diazoverbin-          dung    des     1-Amino-2-methoxy-4-nitrobenzols     und     Maleinsäureanhydrid    derart aufeinander  einwirken     lässt,

          dass    der saure     Maleinsäure-          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       Aoetatkunstseide    aus     wässriger    Lösung in  roten Tönen färbt.

      <I>Beispiel:</I>  in die     Diazolösung,    die man aus<B>168</B> Tei  len<B>1 -</B>     Amino   <B>-</B> 2<B>-</B>     methoxy   <B>-</B> 4<B>-</B>     nitrobenzol    her  stellt, trägt man<B>263</B> Teile des sauren     Malein-          säureesters    des     3.thyloxäthylaminobenzols,     erhalten durch Umsetzung von     Maleinsäure-          anhydrid    mit     Äthyloxätliylaminobenzol,    der  in Form einer     wässrigen    Lösung eines     Ammo-          niumsalzes    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     Natriumehloridlösung    und stellt mit       Natriumearbonat    oder mit     Ainmoniak    auf  den     Neutralpunkt.  



  Additional patent to main patent no. <B> 208950. </B> Process for the production of an azo dye. It has been found that a new valuable azo dye is obtained if A.thyloxä, thylaminobenzene, the diazo compound of 1-amino-2-methoxy-4-nitrobenzene and maleic anhydride are allowed to act on one another in such a way that

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



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

      <I> Example: </I> into the diazo solution, which is made up of <B> 168 </B> parts <B> 1 - </B> Amino <B> - </B> 2 <B> - < / B> methoxy <B> - </B> 4 <B> - </B> nitrobenzene, one carries <B> 263 </B> parts of the acidic maleic acid ester of 3.thyloxäthylaminobenzene, obtained by reacting Maleic anhydride with ethyloxätliylaminobenzene, which is in the form of an aqueous solution of an ammonium salt.

   You lead the hitch ment by prolonged stirring to the end and, if necessary, neutralizing agents such. 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 adjusted to the neutral point with sodium carbonate or ammonia.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man Ätl,Yloxäthylaminobenzol, die Diazoverbin- dung des 1-Amino-2-methoxy-4-nitrobenzols und Maleinsäureanliydrid derart aufeinander einwirken lässt, PATENT CLAIM: Process for the production of an azo dye, characterized in that ethylene, yloxyethylaminobenzene, the diazo compound of 1-amino-2-methoxy-4-nitrobenzene and maleic anhydride are allowed to act on one another in such a way that dass der saure Maleinsäure- ester des Ätliyloxäthylaminobenzols 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. that the acidic maleic acid ester of Ätliyloxäthylaminobenzols 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, in the form of an alkali salt, dissolves in water with a red color and dyes acetate artificial silk from aqueous solution in red shades.
CH211815D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211815A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211815T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211815A true CH211815A (en) 1940-10-15

Family

ID=25724606

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211815D CH211815A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211815A (en)

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