CH296248A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH296248A
CH296248A CH296248DA CH296248A CH 296248 A CH296248 A CH 296248A CH 296248D A CH296248D A CH 296248DA CH 296248 A CH296248 A CH 296248A
Authority
CH
Switzerland
Prior art keywords
amino
wool
preparation
azo dye
brown
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 CH296248A publication Critical patent/CH296248A/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

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum Hauptpatent     Ni,.'-138692.       Verfahren zur Herstellung eines     Azofarbstoffes.            Segenstand    dieses Zusatzpatentes ist ein       \Terfahren    zur Herstellung eines     Azofarbstof-          fes,        welehes    darin besteht, dass man 2     hIol    der       1)iazoverbindung    der     dureh    Kuppeln von     di-          -izotiei-ter,    -1-:

  ilmino-1.1'-azobenzol-4'-oxv-3'-ear-    Bonsäure mit     1-Amino-2.5-dimethoxvbenzol    -er  hä.ltliehen     Aminoazov        erbindttng    mit 1     Mol          1-Aeetoaeetylamino-S-oxv        naphthalin-3.6-disul-          fonsäure    kuppelt.

      <I>Beispiel:</I>    1     >ie        Diazoverbindung    aus     -)9,2        Clewiehts-          teilen        88oloiger        -1-Amino-1.1'-azobenzol-4-'-oxv-          3'-earbonsäure    wird bei 1.0  mit einer wäs  serigen salzsauren Lösung von 1.5,9     Gewiehts-          teilen        1.-Amino-2.5-dimethoxvbenzol    verrührt.

    1     hireh        Zutropfen    von     Natriumaeetatlösung          wird    die Bildung des     Aminoazofarbstoffes    zu       Ende        geführt;

      er wird abgesaugt und in ver  dünnter Natronlauge gelöst.     Naeh    Eintragen  einer wässerigen Lösung von 6,9 Gewiehtstei-         len        Natriumnitrit    wird der Farbstoff     dureh          Einlaufenlassen    in kalte     übersehüssige    Salz  säure     diazotiert    und die     Diazoverbindung    mit  einer wässerigen, einen     übersehuss    von Na  triumearbonat.

   enthaltenden Lösung aus 23,3       Gewiehtsteilen    des     Mononatriumsalzes    der       1-Aeetoaeetplamin-8-oxvnaphthalin    - 3.6 -     disul-          fonsäure    vereinigt.

   Der fertige     13exakisazo-          farbstoff    wird aasgesalzen und abgesaugt; er  besitzt die Zusammensetzung  
EMI0001.0054     
         Er-    färbt die     Misehfaser    aus Wolle und     Zell-          wolle    in kupferbraunen Tönen, die     dureh    Be-    handeln mit Metallsalzen sehr     nasseehte,    rot  braune Färbungen geben.



  <B> Additional patent </B> to the main patent Ni, .'- 138692. Process for the preparation of an azo dye. The subject of this additional patent is a process for the production of an azo dye, which consists of adding 2 hIols of the 1) iazo compound of the di- -izotiei-ter, -1-:

  ilmino-1.1'-azobenzene-4'-oxv-3'-ear- Bonsäure with 1-Amino-2,5-dimethoxvbenzol -er holding Aminoazov bindttng with 1 mol 1-Aeetoaeetylamino-S-oxvnaphthalin-3,6-disulfonic acid clutch.

      <I> Example: </I> 1> The diazo compound from -) 9.2 Clewichts- parts 88oloiger -1-amino-1.1'-azobenzene-4 -'-oxv-3'-carboxylic acid is at 1.0 with an aqueous hydrochloric acid solution of 1.5.9 parts by weight of 1.-amino-2.5-dimethoxylbenzene.

    1 hireh dropwise addition of sodium acetate solution leads to the formation of the aminoazo dye;

      it is suctioned off and dissolved in dilute sodium hydroxide solution. After introducing an aqueous solution of 6.9 parts by weight of sodium nitrite, the dye is diazotized by running it into cold excess hydrochloric acid and the diazo compound with an aqueous excess of sodium carbonate.

   containing solution of 23.3 parts by weight of the monosodium salt of 1-Aeetoaeetplamin-8-oxvnaphthalin - 3.6 - disulphonic acid combined.

   The finished 13exakisazo dye is carrion-salted and filtered off with suction; he owns the composition
EMI0001.0054
         The mismatched fiber made of wool and cellulose wool discolors in copper-brown tones which, when treated with metal salts, give very wet, red-brown colorations.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofa.rb- stoffes, dadureh gekennzeiehnet, dass man <B><U>2</U></B> ' Mol der Diazoverbindung der dureh Kup- peln von diazotierter 4-Amino-1.1'-azobenzol- 4-'-oxv-3'-earbonsäure mit 1-Amino-2.5-di- methox7benzol erhältliehen Aminoazoverbin- Jung mit 1 1M1 PATENT CLAIM: A process for the production of an azo-fiber material, which is characterized in that <B><U>2</U> </B> 'mol of the diazo compound of the diazotized 4-amino-1.1'- azobenzene-4 -'-oxv-3'-carboxylic acid with 1-amino-2,5-dimethox7benzene obtained aminoazoverbin-Jung with 1 1M1 1-Aeeto-aeetylamino-8-oxp- naphthalin-3.fi-disulfonsäure kuppelt. Der Farbstoff färbt die Misehfaser aus Wolle und Zellwolle in kupferbraunen Tönen, die dureh Behandeln mit Metallsalzen sehr nasseehte rotbraune Färbungen geben. 1-aeeto-aeetylamino-8-oxp-naphthalene-3.fi-disulfonic acid couples. The dye dyes the mixed fiber made of wool and viscose wool in copper-brown tones, which, when treated with metal salts, give very wet red-brown colorations. <B>UNTERANSPRUCH:</B> \'erfahren naeh Patentansprueh, dadureh gekennzeiehnet, dass man die Kupplung in Clegenwart eines überseliusses von Natrium earbonat vornimmt. <B> SUBCLAIM: </B> \ 'learn from the patent claim, which indicates that the coupling is carried out in the presence of an excess of sodium earbonate.
CH296248D 1943-04-17 1944-03-21 Process for the preparation of an azo dye. CH296248A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE296248X 1943-04-17
CH238692T 1944-03-21

Publications (1)

Publication Number Publication Date
CH296248A true CH296248A (en) 1954-01-31

Family

ID=25728333

Family Applications (1)

Application Number Title Priority Date Filing Date
CH296248D CH296248A (en) 1943-04-17 1944-03-21 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH296248A (en)

Similar Documents

Publication Publication Date Title
CH286500A (en) Process for the preparation of a monoazo dye.
CH238451A (en) Process for the preparation of a copper-compatible polyazo dye.
CH296248A (en) Process for the preparation of an azo dye.
DE666147C (en) Process for the production of azo dyes on cellulose fibers
AT115627B (en) Process for the preparation of polyazo dyes.
CH238692A (en) Process for the preparation of an azo dye.
CH296244A (en) Process for the preparation of an azo dye.
CH265724A (en) Process for the preparation of a copper-compatible polyazo dye.
CH296249A (en) Process for the preparation of an azo dye.
CH244516A (en) Process for the production of a metallizable polyazo dye.
CH201842A (en) Process for the preparation of a disazo dye.
CH215044A (en) Process for the preparation of a trisazo dye.
CH204449A (en) Process for the production of a new azo dye.
CH217944A (en) Process for the preparation of a substantive trisazo dye.
CH201843A (en) Process for the preparation of a disazo dye.
CH201840A (en) Process for the preparation of a disazo dye.
CH218815A (en) Process for the preparation of a disazo dye.
CH192985A (en) Process for the production of a new azo dye.
CH265728A (en) Process for the preparation of a copper-compatible polyazo dye.
CH218814A (en) Process for the preparation of a disazo dye.
CH305336A (en) Process for the production of a copper-containing trisazo dye.
CH249552A (en) Process for the preparation of a polyazo dye.
CH259329A (en) Process for the preparation of an azo dye.
CH153395A (en) Process for the preparation of a black azo dye.
CH144487A (en) Process for the preparation of a disazo dye.