CH117274A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH117274A
CH117274A CH117274DA CH117274A CH 117274 A CH117274 A CH 117274A CH 117274D A CH117274D A CH 117274DA CH 117274 A CH117274 A CH 117274A
Authority
CH
Switzerland
Prior art keywords
acid
new dye
production
parts
dye
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 CH117274A publication Critical patent/CH117274A/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
    • 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
    • C09B45/34—Preparation from o-monohydroxy azo compounds having in the o'-position an atom or functional group other than hydroxyl, alkoxy, carboxyl, amino or keto groups
    • C09B45/36—Preparation from o-monohydroxy azo compounds having in the o'-position an atom or functional group other than hydroxyl, alkoxy, carboxyl, amino or keto groups by oxidation of hydrogen in o'-position

Landscapes

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

Description

  

  Verfahren     zur    Herstellung eines neuen     Farbstoffes.       Es     wurde    gefunden, dass man einen neuen       Farbstoff    erhält, wenn man dianotierte     3-Ami-          nonaphthalin-1,8-dikarbonsäure    mit     2-Oxy-          naphthalin-6-sulfosäure    vereinigt und den so  erhaltenen     Azofarbstoff    mit chromabgebenden  Mitteln behandelt. Der neue Farbstoff stellt  ein rotbraunes Pulver dar und löst sich in  Wasser mit oranger, in konzentrierter Schwe  felsäure mit blauroter Farbe. Er färbt Wolle  aus saurem Bade in orangen Tönen.  



  <I>Beispiel:</I>  10,6 Teile     3-Aminonaphthalin-1,8-dikarbon-          säureanhydrid    werden mit Hilfe von 10 Teilen       30%iger        Natronlauge        und        150        Teilen        Wasser     heiss gelöst, nach Abkühlung auf zirka 20 0       mit        30        Teilen        Eis        und        25        Teilen        30        %iger     Salzsäure versetzt.

   Es scheidet sich die     3-          Aminonaphthalin-1,8-dikarbonsäureaus,welche     auf Zusatz von 3,5 Teilen Nitrit zunächst in  Lösung geht, um bald wieder als     Diazover-          bindung    auszufallen. Die so erhaltene Suspen  sion wird in eine alkalische Lösung von 11,2  Teilen     2-Oxyiiaphthalin-6-sulfosäure    einlaufen  gelassen. Nach beendeter Kupplung wird das  überschüssige Alkali mit Säure abgestumpft,  der Farbstoff     ausgesalzen,    filtriert und ge  trocknet.

      53 Teile des so erhaltenen     Azofarbstoffes     werden in 950 Teilen Wasser kochend ge  löst, mit einer     Ohromfluoridlösung    entsprechend  22,6 Teilen     Cr20s    versetzt     und    längere Zeit  in Gegenwart von Glaspulver am     Rückfluss-          kühler    gekocht. Die gebildete     Ohromverbin-          dung    wird     abfiltriert,    mit Wasser gewaschen,  in lauwarmer, verdünnter, wässeriger Natron  lauge gelöst und nach     Neutralstellen    der  Lösung mit Essigsäure in üblicher Weise ab  geschieden.



  Process for the production of a new dye. It has been found that a new dye is obtained if dianotated 3-aminonaphthalene-1,8-dicarboxylic acid is combined with 2-oxynaphthalene-6-sulfonic acid and the azo dye thus obtained is treated with chromium donating agents. The new dye is a red-brown powder and dissolves in water with an orange color and in concentrated sulfuric acid with a blue-red color. He dyes wool from an acid bath in orange tones.



  <I> Example: </I> 10.6 parts of 3-aminonaphthalene-1,8-dicarboxylic acid anhydride are dissolved with the aid of 10 parts of 30% strength sodium hydroxide solution and 150 parts of hot water, after cooling to about 20 ° with 30 parts Ice and 25 parts of 30% hydrochloric acid are added.

   The 3-aminonaphthalene-1,8-dicarboxylic acid separates out, which on the addition of 3.5 parts of nitrite initially dissolves and soon precipitates again as a diazo compound. The suspension thus obtained is allowed to run into an alkaline solution of 11.2 parts of 2-oxyiiaphthalene-6-sulfonic acid. After the coupling has ended, the excess alkali is blunted with acid, the dye is salted out, filtered and dried.

      53 parts of the azo dye obtained in this way are dissolved at the boil in 950 parts of water, an odorous fluoride solution corresponding to 22.6 parts of Cr20s is added and the mixture is refluxed for a long time in the presence of glass powder. The ear compound formed is filtered off, washed with water, dissolved in lukewarm, dilute, aqueous sodium hydroxide solution and, after the solution has been rendered neutral with acetic acid, separated off in the usual way.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man dianotierte 3-Aminonaphthalin-1,8-dikarbon- säure mit 2-Oxynaphthalin-6-sulfosäure ver einigt und den so erhaltenen Azofarbstoff, mit cbromabgebenden Mitteln behandelt. Der neue Farbstoff stellt ein rotbraunes Pulver dar und löst sich in Wasser mit oranger, in konzentrierter Schwefelsäure mit blauroter Farbe. Er färbt Wolle aus saurem Bade in orangen Tönen. Claim: Process for the production of a new dye, characterized in that dianotated 3-aminonaphthalene-1,8-dicarboxylic acid is combined with 2-oxynaphthalene-6-sulfonic acid and the azo dye thus obtained is treated with bromine-releasing agents. The new dye is a red-brown powder and dissolves in water with an orange color, in concentrated sulfuric acid with a blue-red color. He dyes wool from an acid bath in orange tones.
CH117274D 1923-12-28 1925-07-31 Process for the production of a new dye. CH117274A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH110287T 1923-12-28
CH117274T 1925-07-31

Publications (1)

Publication Number Publication Date
CH117274A true CH117274A (en) 1926-10-16

Family

ID=25707699

Family Applications (1)

Application Number Title Priority Date Filing Date
CH117274D CH117274A (en) 1923-12-28 1925-07-31 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH117274A (en)

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