CH224125A - Process for the preparation of a primary disazo dye. - Google Patents

Process for the preparation of a primary disazo dye.

Info

Publication number
CH224125A
CH224125A CH224125DA CH224125A CH 224125 A CH224125 A CH 224125A CH 224125D A CH224125D A CH 224125DA CH 224125 A CH224125 A CH 224125A
Authority
CH
Switzerland
Prior art keywords
amino
dye
disazo dye
preparation
diazo
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH224125A publication Critical patent/CH224125A/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

Landscapes

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

Description

  

  Verfahren zur Herstellung eines primären     Disazofarbstoifes.       Vorliegendes Patent bezieht sich auf \ein  Verfahren .zur Herstellung eines primären       Disazofarbstoffes,    dadurch gekennzeichnet,       dass    man die     Diazoverbindung    von     1-Amino-          2-chlorbenzol    in saurem Medium mit -1  Amino -,8 -     ogy.naphthalin    -<B>3,6</B> -     ,

  disulfonsäure     und den so     erhaltenen        Monoazofarbstoff    in       alkalischem    Medium mit der     Diazoverbin-          dung    aus     1-Amino-4-N-cyclohegyl-caprinyl-          aminobenzol    vereinigt.  



  Der so erhaltene     Disazofarbstoff    ist ein  dunkles Pulver, das sich in Wasser mit  blauer, in     konzentrierter        ,Schwefelsäure    mit  schwarzer Farbe löst und     Wolle    .oder Seide  aus saurem oder neutralem Bade in blau  schwarzen Tönen färbt.

   Die Färbungen sind  sehr .gut walk-,     seewasser-,        schweiss-,        deka-          tur-    und     lichtecht.            Beispiel:     Eine mineralsaure     Lösung    von     3,1,9    Tei  len 1-Amino-8-ogynaphthalin-.3,6-,disulfon-    säure wird mit     einer    aus 13 Teilen     1-Amino-          2-chlorbenzo,1        hergestellten        Diazodösung    ver  einigt.

   Wenn die     Bildung    des     Monoazofarb-          stoffes    beendet ist, wird er durch Zugabe  von     überschüssigem        Natriumcarbonat    oder       Natriumbicarbonat    in     Lösung    gebracht. In  diese     Lösung    lässt man bei etwa<B>5-101</B> eine  aus 34,4     Teilen        1-Amino-4-N-cyclohegyl-          caprinyl    -     aminofbenzol    hergestellte     Diazolö-          sung        langsam    einlaufen.

   Der     Disazofarbstoff     bildet sieh sofort und scheidet sich aus.



  Process for the preparation of a primary disazo dye. The present patent relates to a process for the production of a primary disazo dye, characterized in that the diazo compound of 1-amino-2-chlorobenzene is mixed in an acidic medium with -1 amino -, 8 - ogy.naphthalene - <B> 3, 6 </B> -,

  disulfonic acid and the monoazo dye thus obtained are combined in an alkaline medium with the diazo compound of 1-amino-4-N-cyclohegyl-caprinyl-aminobenzene.



  The disazo dye thus obtained is a dark powder that dissolves in water with a blue color, in concentrated sulfuric acid with a black color and dyes wool or silk from an acidic or neutral bath in blue-black tones.

   The colorations are very good mill, seawater, sweat, decay and lightfast. Example: A mineral acid solution of 3.1.9 parts of 1-amino-8-ogynaphthalene-.3,6-, disulfonic acid is combined with a diazo solution prepared from 13 parts of 1-amino-2-chlorobenzo.1.

   When the formation of the monoazo dye has ended, it is brought into solution by adding excess sodium carbonate or sodium bicarbonate. A diazo solution prepared from 34.4 parts of 1-amino-4-N-cyclohegylcaprinyl-aminofbenzene is slowly run into this solution at about 5-101.

   The disazo dye forms and precipitates immediately.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines primä ren Dis@azofarbstoffes,dadurch gekennzeich net, dass man die Diazoverbindung von 1- Amino-2-chlorbenzol in saurem Medium mit 1-Amino--8-ogynaphthalin-3,6-,disulfon- säure und den so erhaltenen Monoazofarb- stoff in abkalis.chem Medium mit der Diazo- , Claim: Process for the production of a primary dis @ azo dye, characterized in that the diazo compound of 1-amino-2-chlorobenzene in an acidic medium with 1-amino-8-ogynaphthalene-3,6-, disulfonic acid and the monoazo dye thus obtained in abkalis.chem medium with the diazo, verbindung aus 1-Amino-4-N-cyolohegyl- caprinyl-aminobenzol vereinigt. Der so erhaltene Disazofarbstoff ist ein dunkles Pulver, das sich in Wasser mit blauer, in konzentrierter Schwefelsäure mit schwarzer Farbe löst und Wolle oder Seide aus saurem oder neutralem Bade in blau schwarzen Tönen färbt. Die Färbungen sind sehr gut walk-, seewasser-, schweiss-, deka- tur- und lichtecht. compound of 1-amino-4-N-cyolohegyl-caprinyl-aminobenzene combined. The disazo dye obtained in this way is a dark powder which dissolves in water with a blue color and in concentrated sulfuric acid with a black color and dyes wool or silk from an acidic or neutral bath in blue-black tones. The dyeings are very good mill, seawater, sweat, decay and lightfast.
CH224125D 1940-09-07 1941-07-18 Process for the preparation of a primary disazo dye. CH224125A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE224125X 1940-09-07
CH221927T 1941-07-18

Publications (1)

Publication Number Publication Date
CH224125A true CH224125A (en) 1942-10-31

Family

ID=25726567

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224125D CH224125A (en) 1940-09-07 1941-07-18 Process for the preparation of a primary disazo dye.

Country Status (1)

Country Link
CH (1) CH224125A (en)

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