CH157523A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH157523A
CH157523A CH157523DA CH157523A CH 157523 A CH157523 A CH 157523A CH 157523D A CH157523D A CH 157523DA CH 157523 A CH157523 A CH 157523A
Authority
CH
Switzerland
Prior art keywords
dye
red
production
azo dye
new azo
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 CH157523A publication Critical patent/CH157523A/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
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Description

  

      Zusatzpatent    zum Hauptpatent Nr. 153486.         Verfahren    zur     Herstellung        eines    neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man     diazotierte          2-Amino-l-phenol-4,6-disulfosäure    mit     6,7-          Benzo-2,4-dioxychinolin    kuppelt und den er  haltenen     Farbstoff    mit einem chromabgeben  den Mittel behandelt.  



  Der erhaltene Farbstoff ist ein braunrot  gefärbtes Pulver, das sich in Wasser, in  10     o/oiger    Natronlauge oder     Sodalösung    mit  roter und in konzentrierter Schwefelsäure mit  blauroter Farbe löst. Der     Farbstoff    färbt  Wolle aus schwefelsaurem Bade gleichmässig  in bordeauxroten Tönen an, die gut walk  und lichtecht sind.  



       Beispiel:     269 Teile     2-Amino-l-phenol-4,6-disulfo-          säure    werden     diazotiert    und in alkalischem  Medium mit 220 Teilen     6,7-Benzo-2,4-dioxy-          chinolin    gekuppelt. Der Farbstoff wird mit  Kochsalz     ausgesalzen    und     abfiltriert.    Die  erhaltene     Farbstoffpaste    wird mit 7000 Tei  len Wasser angerührt und mit einer Chrom  form.iatlösung versetzt, die aus 85 Teilen    Chromoxyd, 160 Teilen Ameisensäure und  600 Teilen Wasser hergestellt wurde.

   Das  Gemisch wird etwa 20 Stunden unter     Rück-          fiuss    zum Sieden erhitzt und hierauf die  Chromverbindung des Farbstoffes mit Koch  salz abgeschieden,     abfiltriert    und getrocknet.



      Additional patent to main patent No. 153486. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if diazotized 2-amino-1-phenol-4,6-disulfonic acid is coupled with 6,7-benzo-2,4-dioxyquinoline and the dye obtained is given off with a chromium-donating agent treated.



  The dye obtained is a brown-red colored powder which dissolves in water, in 10% sodium hydroxide solution or soda solution with red and in concentrated sulfuric acid with a bluish-red color. The dye evenly dyes wool from sulfuric acid baths in burgundy-red tones, which are easy to walk and lightfast.



       Example: 269 parts of 2-amino-1-phenol-4,6-disulphonic acid are diazotized and coupled with 220 parts of 6,7-benzo-2,4-dioxyquinoline in an alkaline medium. The dye is salted out with common salt and filtered off. The dye paste obtained is mixed with 7000 parts of water and mixed with a chromium formate solution which was prepared from 85 parts of chromium oxide, 160 parts of formic acid and 600 parts of water.

   The mixture is heated to boiling under reflux for about 20 hours and the chromium compound of the dye is then precipitated with sodium chloride, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet; dass man diazotierte 2-Amino-l-phenol-4,6-disulfo- säure mit 6,7-Benzo-2,4-dioxychinolin kup pelt und den erhaltenen Farbstoff mit einem chromabgebenden Mittel behandelt. Der erhaltene Farbstoff ist ein braunrot gefärbtes Pulver, das sich in Wasser, in 10 o/oiger Natronlauge oder Sodalösung mit roter und in konzentrierter Schwefelsäure mit blauroter Farbe löst. PATENT CLAIM: Process for the production of a new azo dye, characterized in that; that diazotized 2-amino-1-phenol-4,6-disulphonic acid is coupled with 6,7-benzo-2,4-dioxyquinoline and the dye obtained is treated with a chromium donating agent. The dye obtained is a brown-red colored powder which dissolves in water, in 10% sodium hydroxide solution or soda solution with red and in concentrated sulfuric acid with a bluish-red color. Der Farbstoff färbt Wolle aus schwefelsaurem Bade gleichmässig in bordeauxroten Tönen an, die gut walk und lichtecht sind. The dye evenly dyes wool from sulfuric acid baths in burgundy-red tones, which are easy to walk and lightfast.
CH157523D 1930-12-16 1930-12-16 Process for the production of a new azo dye. CH157523A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH157523T 1930-12-16
CH153486T 1930-12-16

Publications (1)

Publication Number Publication Date
CH157523A true CH157523A (en) 1932-09-30

Family

ID=25716202

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157523D CH157523A (en) 1930-12-16 1930-12-16 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH157523A (en)

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