CH296244A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH296244A
CH296244A CH296244DA CH296244A CH 296244 A CH296244 A CH 296244A CH 296244D A CH296244D A CH 296244DA CH 296244 A CH296244 A CH 296244A
Authority
CH
Switzerland
Prior art keywords
amino
brown
azo dye
dye
coupling
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Hoechst Akt Bruening
Original Assignee
Hoechst Ag
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 Hoechst Ag filed Critical Hoechst Ag
Publication of CH296244A publication Critical patent/CH296244A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/18—Trisazo or higher polyazo dyes
    • C09B33/28—Tetrazo dyes of the type A->B->K<-C<-D

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

      'Lnsatzpateiit    zum     Hauptpatent    Nr.<B>238699.</B>    Verfahren zur     Herstellung    eines     Azofarbstoffes.            Gegenstand    dieses Zusatzpatentes ist ein  Verfahren zur Herstellung eines     Azofarbstof-          fes.    w     elehes    darin besteht,

   dass man 2     Mol    der       Diazoverbindung    der     dureh    Kuppeln von     di-          azotierter        5-Amino-\?-oxvbenzol-l.-earbonsäur@e       mit     3-Amino-4-metlioxy-7-methylbenzol    erhält  liehen     Aminoazoverbindung    mit 1.     l2ol        2-Aeeto-          acetylamino    - 5 -     oxynaphthalin-7-sulfonsäure     kuppelt.

      <I>Beispiel:</I>    Die     1)iazoverbindung    aus 15,6 Gewichts  teilen     5-Amino        2-oxybenzol-l-earbonsänre    wird  bei     gewöhnlieher    Temperatur mit einer salz  sauren Lösung von<B>13,8</B> Gewichtsteilen     3-          Amino-4-methoxy-1.-methylben7ol    vereinigt.       1)nreh        Zutropfen    von     Natriumaeetatlösung          wird    die Kupplung     ztt        linde    geführt.

   Der er-         haltene        Aminoazofarbstoff    wird erneut     diazo-          tiert    und in Gegenwart eines     LTbersehusses     von     Natriumearbonat    bei Zimmertemperatur  mit 19 Gewichtsteilen des     Natriumsalzes    von  2     -Aeetoacety        lamino-5-oxy        naphthalin-    7     -sulfon-          säure,    in     _N\        asser    gelöst, vereinigt.

      Der     Tetrakisazofarbstoff    von der Formel:  
EMI0001.0048     
    wird als braunes Pulver erhalten. Er färbt  die     3liselifaser    aus Wolle und Zellwolle     gleieh-          inäl3ig        oran-ebraun;        dureh        Behandlung    der    Färbungen mit     Kupfersulfat-Chromkali=Lö-          sung    erhält man ein lebhaftes Rotbraun von  guten     Echtheitseigensehaften.  



      Insert file for main patent no. <B> 238699. </B> Process for the production of an azo dye. The subject of this additional patent is a process for the production of an azo dye. what it consists of

   that 2 moles of the diazo compound of the aminoazo compound borne by coupling diazo-azotized 5-amino - \? - oxvbenzol-l.-earbonsäur@e with 3-amino-4-metlioxy-7-methylbenzene is obtained with 1.12ol of 2-aeto - Acetylamino - 5 - oxynaphthalene-7-sulfonic acid couples.

      <I> Example: </I> The 1) iazo compound from 15.6 parts by weight of 5-amino-2-oxybenzene-1-carboxylic acid is mixed with a salt-acidic solution of <B> 13.8 </B> parts by weight at ordinary temperature 3-Amino-4-methoxy-1.-methylben7ol combined. 1) After the dropwise addition of sodium acetate solution, the coupling is led to the linden tree.

   The aminoazo dye obtained is diazotized again and, in the presence of an excess of sodium carbonate, combined with 19 parts by weight of the sodium salt of 2-aeetoacetylamino-5-oxynaphthalene-7-sulfonic acid, dissolved in water, at room temperature.

      The tetrakisazo dye of the formula:
EMI0001.0048
    is obtained as a brown powder. It dyes the liseli fiber made of wool and viscose viscose uniformly orange-ebrown; By treating the dyeings with copper sulfate-chromium-potassium solution, a vivid red-brown with good fastness properties is obtained.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeiehnet, dass man -? l-lol der Diazov erbindung der durch Kup peln von diazotierter 5-Amino-2-oxybenzol-l- carbonsäure mit 3-Amino-4-methoxy-l-methyl- benzol erhältlichen Aminoazoverbindung mit 1 iVIol 2-Aeetoacetyl-amino-5-oxynaphthalin-7- PATENT CLAIM Process for the production of an azo dye, characterized in that one -? l-lol of the Diazov connection of the aminoazo compound obtainable by coupling diazotized 5-amino-2-oxybenzene-l-carboxylic acid with 3-amino-4-methoxy-l-methylbenzene with 1 ivol of 2-aetoacetyl-amino-5- oxynaphthalene-7- sulfonsäure kuppelt. Der Farbstoff wird als braunes Pulver er halten. Er färbt Misehfasern aus Wolle und Zellwolle gleichmässig orangebraun; durch Be handeln der Färbungen mit Kupfersulfat- Chromkali-Lösung erhält man ein lebhaftes Rotbraun von guten Eehtheitseigensehaften. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet,. dass man die Kupplung in Gegenwart eines i'bersehusses von Natrium- carbonat vornimmt. sulfonic acid couples. The dye will be kept as a brown powder. It dyes miseh fibers made of wool and rayon evenly orange-brown; By treating the dyeings with copper sulfate-chromium-potassium solution, a vivid red-brown with good integrity properties is obtained. SUBClaim: Method according to claim, characterized in that. that the coupling is carried out in the presence of an excess of sodium carbonate.
CH296244D 1943-04-17 1944-03-21 Process for the preparation of an azo dye. CH296244A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE296244X 1943-04-17
CH238692T 1944-03-21

Publications (1)

Publication Number Publication Date
CH296244A true CH296244A (en) 1954-01-31

Family

ID=25728332

Family Applications (1)

Application Number Title Priority Date Filing Date
CH296244D CH296244A (en) 1943-04-17 1944-03-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH296244A (en)

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