CH211005A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH211005A
CH211005A CH211005DA CH211005A CH 211005 A CH211005 A CH 211005A CH 211005D A CH211005D A CH 211005DA CH 211005 A CH211005 A CH 211005A
Authority
CH
Switzerland
Prior art keywords
mol
oxy
azo dye
parts
preparation
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 CH211005A publication Critical patent/CH211005A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/38Trisazo dyes ot the type
    • C09B35/40Trisazo dyes ot the type the component K being a dihydroxy or polyhydroxy compound

Landscapes

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

Description

  

      Zusatzpatent    zum     lIauptpatent        Nr.   <B>208538.</B>    Verfahren zur Herstellung eines     Azofarbstoffes.       Es wurde gefunden,     dass    ein neuer     Azo-          farbstoff    hergestellt werden kann, wenn man  <B>1</B>     Mol        1,3-Dioxybenzol    einerseits mit<B>1</B>     Mol     der     Diazoverbindung    aus     1-Oxy-2-aminoben-          zol-4-sulfamid    und anderseits mit<B>1</B>     Mol    der       Diazoazoverbindung,

      die bei der einseitigen  Kupplung     tetrazotierten        3,3'-Dimetlioxy-4,4'-          diaminodiphenyls    mit     3-Methvj-2-oxy-l-ben-          zoesäure    entsteht, vereinigt.  



  Der erhaltene Farbstoff bildet ein schwärz  liches Pulver, das sieh, in Wasser und ver  dünnten     Alkalien    mit     bräunlieller    und in       konz.    Schwefelsäure mit rotblauer Farbe  löst. Baumwolle und regenerierte Zellulose  werden aus Glaubersalz enthaltendem Bade    in braunroten Tönen gefärbt, die durch       NacUbehandlung    mit Metall-, insbesondere       Kupfersalzen,    vorzüglich licht- und wasch  echt werden.  



  <I>Beispiel:</I>  24,4 Teile     3,3'-Dimethoxy-4,4'-diamino-          diphenyl    werden in bekannter Weise mit  <B>52</B> Teilen     konz.    Salzsäure und 14 Teilen       Natriumnitrit    in die     Tetrazoverbindung    über  geführt. Diese     lässt    man zu einer bei 4'<B>C</B>  gehaltenen Lösung fliessen, die man aus<B>18</B>  Teilen     3-Metliyl-2-oxy-l-benzoesäure    und     55     Teilen wasserfreiem     Natriumcarbonat    erhal  ten hat.

   In kurzer Zeit bildet sieh     diebraune          Diazoazoverbindung    der Formel  
EMI0001.0037     
    Diese kombiniert man nun mit dem     Mono-          azofarbste,ff,    den man erhält, wenn man die         Diazoverbindung    aus<B>18,8</B> Teilen     1-Oxy-2-          aminobenzol-4-suliamid    in Gegenwart von      <B>25</B> Teilen wasserfreiem     Natriumcarbonat    mit  <B>11</B> Teilen     1,3-1)ioxybenzol    kuppelt.

   Die  Kupplung zum     Monoazofarbstoff    ist sofort  beendet und die rote Lösung desselben wird  nun zu der oben erhaltenen     Diazoazoverbin-          dung    gegeben, worauf eine braune Fällung  des     Trisazofarbstoffes    entsteht.  



  Nach     24stündigem    Rühren erhitzt man  auf<B>65 '</B> und filtriert, trocknet und pulveri  siert den schwärzlichen Filterrückstand.



      Additional patent to main patent no. <B> 208538. </B> Process for the production of an azo dye. It has been found that a new azo dye can be produced if <B> 1 </B> mol 1,3-dioxybenzene on the one hand with <B> 1 </B> mol of the diazo compound from 1-oxy-2- aminobenzene-4-sulfamide and on the other hand with <B> 1 </B> mol of the diazoazo compound,

      the 3,3'-dimetlioxy-4,4'-diaminodiphenyl tetrazotized in the one-sided coupling is formed with 3-methoxy-2-oxy-1-benzoic acid, combined.



  The dye obtained forms a blackish powder that you see in water and dilute alkalis with brownish and in conc. Dissolves sulfuric acid with a red-blue color. Cotton and regenerated cellulose are dyed from baths containing Glauber's salt in brown-red tones, which are extremely lightfast and washfast by treatment with metal salts, especially copper salts.



  <I> Example: </I> 24.4 parts of 3,3'-dimethoxy-4,4'-diamino-diphenyl are concentrated in a known manner with 52 parts. Hydrochloric acid and 14 parts of sodium nitrite passed into the tetrazo compound. This is allowed to flow to a solution kept at 4 ° C, which is obtained from 18 parts of 3-methyl-2-oxy-1-benzoic acid and 55 parts of anhydrous sodium carbonate Has.

   In a short time it forms the brown diazoazo compound of the formula
EMI0001.0037
    This is now combined with the monoazo color, ff, which is obtained when the diazo compound is obtained from 18.8 parts of 1-oxy-2-aminobenzene-4-suliamide in the presence of 25 Parts of anhydrous sodium carbonate with 11 parts of 1,3-1) ioxybenzene coupled.

   The coupling to the monoazo dye is ended immediately and the red solution of the same is now added to the diazoazo compound obtained above, whereupon a brown precipitate of the trisazo dye results.



  After stirring for 24 hours, the mixture is heated to <B> 65 '</B> and filtered, dried and pulverized the blackish filter residue.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet dass man <B>1</B> Mol 1,3-Dioxybenzol einerseits mit<B>1</B> Mol der Diazoverbindung aus 1-Oxy-2-aminoben- zol-4-sulfamid und anderseits mit<B>1</B> Mol der Diazoverbindung, die bei der einseitigen Kupplung tetrazotierten 3,3'-Dimethoxy-4, PATENT CLAIM: A process for the production of an azo dye, characterized in that <B> 1 </B> mol 1,3-dioxybenzene is mixed with <B> 1 </B> mol of the diazo compound from 1-oxy-2-aminoben- zol-4-sulfamide and on the other hand with <B> 1 </B> mol of the diazo compound, the 3,3'-dimethoxy-4, tetrazotized in the one-sided coupling, 4- diaminodiphenyIs mit 3-31ethyl-2-oxy-l-ben- zoesäure entsteht, vereinigt. Der erhaltene Farbstoff bildet ein schwärz- liehes Pulver, das sieh in Wasser und ver dünnten Alkalien mit bräunlicher und in konzentrierter Schwefelsäure mit rotblauer Farbe löst. 4-diaminodiphenyl is formed with 3-31ethyl-2-oxy-1-benzoic acid, combined. The dye obtained forms a black powder that dissolves in water and dilute alkalis with a brownish color and in concentrated sulfuric acid with a red-blue color.
CH211005D 1938-07-22 1938-07-22 Process for the preparation of an azo dye. CH211005A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH211005T 1938-07-22
CH208538T 1938-07-22

Publications (1)

Publication Number Publication Date
CH211005A true CH211005A (en) 1940-08-15

Family

ID=25724534

Family Applications (1)

Application Number Title Priority Date Filing Date
CH211005D CH211005A (en) 1938-07-22 1938-07-22 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH211005A (en)

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