CH241145A - Process for the preparation of a new disazo dye. - Google Patents

Process for the preparation of a new disazo dye.

Info

Publication number
CH241145A
CH241145A CH241145DA CH241145A CH 241145 A CH241145 A CH 241145A CH 241145D A CH241145D A CH 241145DA CH 241145 A CH241145 A CH 241145A
Authority
CH
Switzerland
Prior art keywords
preparation
new
mol
aminobenzene
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Ciba
Original Assignee
Ciba Geigy
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 Ciba Geigy filed Critical Ciba Geigy
Publication of CH241145A publication Critical patent/CH241145A/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
    • C09B33/02—Disazo dyes
    • C09B33/08—Disazo dyes in which the coupling component is a hydroxy-amino compound
    • C09B33/10—Disazo dyes in which the coupling component is a hydroxy-amino compound in which the coupling component is an amino naphthol

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 238336.    Verfahren zur Herstellung eines neuen     Bisazofarbstoifes.       Es wurde gefunden, dass man einen neuen       Disazofarbstoff    erhält, wenn man auf 1     Mol     der 5.5' -     Diogy    - 2.2' -     dinaphthylamin-    7.7'     -          disulfonsäure    1     Mol        diazotierte        1-Amino-4-          (2'.4"-        dichlorbenzoyl)

      -     aminobenzol-2-carbon-          säure    und 1     Mol        diazotierte        4-Brom-l-amino-          benzol-2-carbonsäure        einwirken    lässt.  



  Der neue Farbstoff stellt ein violettes  Pulver dar, das sich in Wasser oder konzen  trierter Schwefelsäure     mit    violetter Farbe  löst. Er färbt Baumwolle in rotstickig violet  ten Tönen, die durch Nachkupfern     wasch-          und    lichtecht werden.    <I>Beispiel:</I>    Man löst 32,5 Teile       chlorbenzoyl)-aminobenzol    - 2 -     carbonsäure    in  14 Teilen einer 30%igen     Natriumhydrogyd-          lösung        und    130 Teilen Wasser und fügt  7 Teile     Natriumnitrit    zu. Diese Lösung giesst  man bei 5 bis 10  in eine Mischung von 40  Teilen 30%iger Salzsäure und Eis und rührt  eine Stunde.

   Den erhaltenen     Diazobrei    giesst  man in eine mit Eis auf 5  gekühlte Lösung  von 32,1 Teilen 5.5'-Diogy-2.2'-dinaphthyl-         amin-7.7'-disulfonsäure    und 50 Teilen     Na-          triumcarbonat    in 200 Teilen Wasser. Man  rührt 4 Stunden     und    giesst dann eine     in    be  kannter Art aus 21,6 Teilen     4-Brom-l-amino-          benzol-2-carbonsäure    hergestellte     Diazolösung     zu. Nach erfolgter Kupplung     wird    der Farb  stoff     ausgesalzen,    filtriert und     getrocknet.  



      Additional patent to main patent No. 238336. Process for the production of a new bisazo dye. It has been found that a new disazo dye is obtained if 1 mole of diazotized 1-amino-4- (2'.4 "- dichlorobenzoyl) is added to 1 mole of 5.5 '- Diogy - 2.2' - dinaphthylamine- 7.7 '- disulfonic acid

      - Aminobenzene-2-carboxylic acid and 1 mol of diazotized 4-bromo-1-aminobenzene-2-carboxylic acid can act.



  The new dye is a purple powder that dissolves in water or concentrated sulfuric acid with a purple color. It dyes cotton in red-embroidered violet tones, which are washed and lightfast by re-coppering. <I> Example: </I> 32.5 parts of chlorobenzoyl) aminobenzene - 2 - carboxylic acid are dissolved in 14 parts of a 30% strength sodium hydrogen solution and 130 parts of water and 7 parts of sodium nitrite are added. This solution is poured into a mixture of 40 parts of 30% strength hydrochloric acid and ice at 5 to 10 and stirred for one hour.

   The resulting diazo slurry is poured into a solution, cooled to 5 with ice, of 32.1 parts of 5.5'-Diogy-2.2'-dinaphthylamine-7.7'-disulfonic acid and 50 parts of sodium carbonate in 200 parts of water. The mixture is stirred for 4 hours and then a diazo solution prepared in a known manner from 21.6 parts of 4-bromo-1-aminobenzene-2-carboxylic acid is poured in. After coupling has taken place, the dye is salted out, filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Diazofarbstoffes, dadurch gekennzeichnet, dass man auf 1 Mol der 5.5'-Diogy-2.2'-di- naphthylamin - 7.7'- disulfonsäure 1 Mol di- azotierte 1- Amino - 4 - (2'.4' - dichlorbenzoyl) PATENT CLAIM: Process for the preparation of a new diazo dye, characterized in that 1 mol of the 5.5'-Diogy-2.2'-di-naphthylamine-7.7'-disulfonic acid 1 mol of diazoated 1-amino-4 - (2'.4 '- dichlorobenzoyl) - aminobenzol-2-carbonsäure und 1 Mol diazo- tierte 4-Brom-l-aminobenzol-2-carbonsäure einwirken lässt. Der neue Farbstoff stellt ein violettes Pulver dar, das sich in Wasser oder konzen trierter Schwefelsäure mit violetter Farbe löst. Er färbt Baumwolle in rotstickig violet ten Tönen, die durch Nachkupfern wasch und lichtecht werden. - Aminobenzene-2-carboxylic acid and 1 mol of diazotized 4-bromo-1-aminobenzene-2-carboxylic acid can act. The new dye is a purple powder that dissolves in water or concentrated sulfuric acid with a purple color. It dyes cotton in red-embroidered violet tones, which are washed and lightfast by re-coppering.
CH241145D 1943-06-29 1943-06-29 Process for the preparation of a new disazo dye. CH241145A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH238336T 1943-06-29
CH241145T 1943-06-29

Publications (1)

Publication Number Publication Date
CH241145A true CH241145A (en) 1946-02-15

Family

ID=25728315

Family Applications (1)

Application Number Title Priority Date Filing Date
CH241145D CH241145A (en) 1943-06-29 1943-06-29 Process for the preparation of a new disazo dye.

Country Status (1)

Country Link
CH (1) CH241145A (en)

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