CH211803A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211803A
CH211803A CH211803DA CH211803A CH 211803 A CH211803 A CH 211803A CH 211803D A CH211803D A CH 211803DA CH 211803 A CH211803 A CH 211803A
Authority
CH
Switzerland
Prior art keywords
azo dye
methyl
preparation
dye
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 CH211803A publication Critical patent/CH211803A/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       5-Met'hyl-N-ätllyloxyät'hylaminobenzol,    die       Diazoverbindung    des     1-Amino-4-nitrobenzol-          2-metliylsulions        undMaleinsäureanllydrid    der  art aufeinander einwirken     lässt,

          dass    der saure       Maleinsäureester    des     5-Methyl-N-ät'hyloxy-          ät'hylaminobenzols    gebildet wird und der     Di-          azorest    in     4-Stellung    zur tertiären     Amino-          gruppe    eintritt.  



  Der so erhaltene Farbstoff bildet ein  dunkles Pulver, das sieh in Form eines     Al-          kalisalzes    in Wasser mit violetter Farbe löst  und     Acetatkunstseide    auf wässeriger Lösung  in violetten Tönen färbt.

      <I>Beispiel:</I>    In die     Diazolösung,    die man aus<B>216</B> Tei  len     1-Amino-4-nitrobenzol-2-methylsulfon     herstellt, trägt man<B>277</B> Teile des sauren       Maleinsäureesters    des     5-Methyl-N-äthyloxy-          äthylaminobenzols,    erhalten durch Umset-         zung    von     Maleinsäureanhydrid    mit     5-Me-          thyl-N-ätliyloxyä,t'hylaminobenzol,    der in  Form einer wässerigen Lösung seines     Ammo-          uiumsalzes    vorliegt<B>,</B> 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 Ammoniak  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 5-methyl-N-ätllyloxyät'hylaminobenzene, the diazo compound of 1-amino-4-nitrobenzene-2-methylsulion and maleic anhydride, is allowed to act on one another

          that the acidic maleic acid ester of 5-methyl-N-ät'hyloxy-ät'hylaminobenzols is formed and the diazo group occurs in the 4-position to the tertiary amino group.



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

      <I> Example: </I> <B> 277 </B> parts are added to the diazo solution that is produced from <B> 216 </B> parts of 1-amino-4-nitrobenzene-2-methylsulfone of the acidic maleic acid ester of 5-methyl-N-ethyloxy-ethylaminobenzene, obtained by reacting maleic anhydride with 5-methyl-N-ethyloxy-ethylaminobenzene, which is in the form of an aqueous solution of its ammonium salt <B> , </B> a.

   The coupling is completed by prolonged stirring and neutralizing agents can also be used. such as B. Add 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)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 5- l#lethyl-N-ä,thyloxyäthylaminabenzol, die Di- azoverbindung des 1-Amino-4-nitrobenze,1-2- methylsulfons und L#laleinsäureanliydrid der art aufeinander einwirken lässt, <B> PATENT CLAIM: </B> Process for the production of an azo dye, characterized in that 5- l # lethyl-N-ä, thyloxyäthylaminabenzol, the diazo compound of 1-amino-4-nitrobenze, 1-2 - lets methyl sulfone and laleic anhydride act on each other dass der saure Maleinsäureester des 5-Methyl-N-äthyloxy- äthylaminobenzols gebildet wird und der Di- azorest in 4-Stellung zur tertiären Amino- gruppe eintritt. Der so erhaltene Farbstoff bildet ein dunkles Pulver, das sieh in Form eines Al- ka,lisalzes in Wasser mit violetter Farbe löst und #leetittkuiistsei(le aus wässeriger Lösung in violetten Tönen färbt. that the acidic maleic acid ester of 5-methyl-N-ethyloxy-ethylaminobenzene is formed and the diazo group is in the 4-position to the tertiary amino group. The dye obtained in this way forms a dark powder which, in the form of an alkali salt, dissolves in water with a violet color and colors leetittkuiistsei (le from aqueous solution in violet shades.
CH211803D 1937-09-18 1937-09-18 Process for the preparation of an azo dye. CH211803A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH208950T 1937-09-18
CH211803T 1937-09-18

Publications (1)

Publication Number Publication Date
CH211803A true CH211803A (en) 1940-10-15

Family

ID=25724594

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211803D CH211803A (en) 1937-09-18 1937-09-18 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211803A (en)

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