CH163546A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH163546A
CH163546A CH163546DA CH163546A CH 163546 A CH163546 A CH 163546A CH 163546D A CH163546D A CH 163546DA CH 163546 A CH163546 A CH 163546A
Authority
CH
Switzerland
Prior art keywords
azo dye
blue
production
new azo
mol
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 CH163546A publication Critical patent/CH163546A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/24—Disazo or polyazo compounds
    • C09B45/28—Disazo or polyazo compounds containing copper
    • 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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/205—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl- or triaryl- alkane or-alkene
    • C09B35/215—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl- or triaryl- alkane or-alkene of diarylethane or diarylethene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man 1     Mol        tetrazo-          tierte        4.4'-Diaminostilben-3.3'-dikarbon-          säure    mit 2'     Mol        1-Amino-8-oxynaphthalin-          4-sulfonsäure    kuppelt.  



  Der erhaltene     Azofarbstoff    stellt     ein     graues Pulver dar, das sich in konzentrier  ter Schwefelsäure mit blauer und in Wasser  mit     violetter    Farbe löst. Er färbt Baumwolle  aus neutralem oder schwach alkalischem Bade  in graublauen Tönen, die beim Nachbehan  deln mit Kupfersalzen in ein echtes Grün  blau umschlagen.  



  <I>Beispiel:</I>  29,8 Teile     4.4'-Diaminostilben-3.8'-di-          karbonsäure    werden in 304 Teilen Wasser  suspendiert und durch Beigabe der zur Bil  dung des     Dinatriumsalzes        notwendigen    Menge  Natronlauge in     Lösung    gebracht. Zu der  neutralen oder schwach alkalischen Lösung  gibt man 14 Teile     Natriumnitrit    als     20%ige          Lösung    hinzu und lässt das 'Ganze unter gu  tem Rühren langsam in ein Gemisch von  70 Teilen     konz.    Salzsäure und Eis einlaufen.  Nach einigem Rühren hat die     Tetrazolösung       eine hellbraune Farbe angenommen.

   Dann  lässt man diese Lösung in eine     abgekühlte,          sodaalkalisehe    Lösung von 48 Teilen     1-          Amino-8-oxynaphthalin-4-sulfonsäure    ein  laufen. Nach beendeter Kupplung wird der  Farbstoff nach Zugabe von etwas Kochsalz       abfiltriert,    gegebenenfalls umgelöst und ge  trocknet.



  Process for the production of a new azo dye. It has been found that a new azo dye is obtained if 1 mole of tetrazoated 4,4'-diaminostilbene-3,3'-dicarboxylic acid is coupled with 2 'mole of 1-amino-8-oxynaphthalene-4-sulfonic acid.



  The azo dye obtained is a gray powder which dissolves in concentrated sulfuric acid with a blue color and in water with a purple color. It dyes cotton from neutral or weakly alkaline baths in gray-blue tones that turn into a real green blue when treated with copper salts.



  <I> Example: </I> 29.8 parts of 4.4'-diaminostilbene-3.8'-dicarboxylic acid are suspended in 304 parts of water and brought into solution by adding the amount of sodium hydroxide required to form the disodium salt. 14 parts of sodium nitrite as a 20% solution are added to the neutral or weakly alkaline solution and the whole is slowly converted into a mixture of 70 parts of conc. Run in hydrochloric acid and ice. After some stirring, the tetrazo solution has turned a light brown color.

   This solution is then allowed to run into a cooled, soda-alkaline solution of 48 parts of 1-amino-8-oxynaphthalene-4-sulfonic acid. After coupling has ended, the dye is filtered off after adding a little sodium chloride, if necessary redissolved and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes,' dadurch gekennzeichnet, dass man 1 Mol tetrazotierte 4. 4'-Diaminostilben- 3,.3'-dikarbonsäure mit 2 Mol 1-Amino- 8-ogynaphthalin-4-sulfonsäure kuppelt. Der erhaltene Azofarbstoff stellt ein graues Pulver dar, das sich in konzentrier ter Schwefelsäure mit blauer und in Wasser mit violetter Farbe löst. PATENT CLAIM: Process for the preparation of a new azo dye, characterized in that 1 mol of tetrazotized 4,4'-diaminostilbene-3, 3'-dicarboxylic acid is coupled with 2 mol of 1-amino-8-ogynaphthalene-4-sulfonic acid. The azo dye obtained is a gray powder which dissolves in concentrated sulfuric acid with a blue color and in water with a purple color. Er färbt Baumwolle aus neutralem oder schwach alkalischem Bade in graublauen Tönen, die beim Nachbehan deln mit Kupfersalzen in ein echtes Grün blau umschlagen. It dyes cotton from neutral or weakly alkaline baths in gray-blue tones that turn into a real green blue when treated with copper salts.
CH163546D 1932-02-18 1932-02-18 Process for the production of a new azo dye. CH163546A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH163546T 1932-02-18

Publications (1)

Publication Number Publication Date
CH163546A true CH163546A (en) 1933-08-31

Family

ID=4416609

Family Applications (1)

Application Number Title Priority Date Filing Date
CH163546D CH163546A (en) 1932-02-18 1932-02-18 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH163546A (en)

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