CH111926A - Process for the preparation of a new dye. - Google Patents

Process for the preparation of a new dye.

Info

Publication number
CH111926A
CH111926A CH111926DA CH111926A CH 111926 A CH111926 A CH 111926A CH 111926D A CH111926D A CH 111926DA CH 111926 A CH111926 A CH 111926A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
new dye
parts
coupled
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 CH111926A publication Critical patent/CH111926A/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)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines neuen     Parbstoffes.       Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man die     2,3-Ogynaph-          thoesäure    mit der     Diazoverbindung    aus 1  Oxynaphthalin-8-sulfamid-2-amino - 4     -sulfo-          säure    kuppelt     und    .den so erhaltenen Farb  stoff mit     Chromformiat    behandelt. Der neue  Farbstoff bildet ein     schwärzliches    Pulver,  das sich in Wasser mit blauer, in verdünn  ter Natronlauge mit violetter Farbe löst. Er       erzeugt    auf Baumwolle mit Hilfe von Chrom  beizen gedruckt, reine indigoblaue Töne.

    



  <I>Beispiel:</I>    In ein Gemisch von 60 Teilen Kalihydrat,  46 Teilen Wasser und 18,8 Teilen     2,3-Oxy-          naphtoösäure    trägt man unter Rühren bei  mittlerer Temperatur (ca. 50  ) 32,9 Teile der       Diazoverbindung    aus     1-Oxynaphthalin-8-sul-          famid-2-amino-4-sulfosäure    in Form einer  ca. 30     %igen    Paste ein. Man rührt noch län  gere Zeit bei dieser Temperatur, bis die     Di-          azoverbindung    verschwunden ist. Hierauf  verdünnt man mit 350 Teilen Wasser, stellt  mit nicht zu verdünnter Mineralsäure neutral    und fällt den gebildeten Farbstoff mit Koch  salz aus.  



  51,7 Teile dieses Farbstoffes werden in  400 Teile kochendes Wasser eingetragen und  mit 44 Teilen kristallisiertem     Chromformiat     entsprechend 16     Teilen        Cr203    versetzt. Man  kocht hierauf längere Zeit am     Rückfluss-          kühler,    dampft dann etwas ein     und    fällt .den  gebildeten     chromhaltigen    Farbstoff mit Koch  salz     a.nc..  



  Process for the preparation of a new paraffin. It has been found that a new dye is obtained if the 2,3-ogynaphthoic acid is coupled with the diazo compound of 1-oxynaphthalene-8-sulfamid-2-amino-4-sulfonic acid and the dye thus obtained is coupled with it Chromium formate treated. The new dye forms a blackish powder that dissolves in water with a blue color and in dilute caustic soda with a purple color. Printed on cotton with the help of chrome stain, it produces pure indigo blue tones.

    



  <I> Example: </I> 32.9 parts of the diazo compound are added to a mixture of 60 parts of potassium hydrate, 46 parts of water and 18.8 parts of 2,3-oxynaphthoic acid with stirring at medium temperature (approx. 50) of 1-oxynaphthalene-8-sulphamide-2-amino-4-sulphonic acid in the form of an approximately 30% paste. The mixture is stirred for a longer time at this temperature until the diazo compound has disappeared. It is then diluted with 350 parts of water, neutralized with mineral acid that is not too dilute and the dye formed is precipitated with sodium chloride.



  51.7 parts of this dye are introduced into 400 parts of boiling water and 44 parts of crystallized chromium formate, corresponding to 16 parts of Cr203, are added. It is then refluxed for a long time, then evaporated a little and the chromium-containing dye formed is precipitated with sodium chloride a.nc ..

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man die 2,3-Oxynaphtoösäure mit der Diazo- verbindung aus 1-Oxynaphthalin-8-sulfamid- 2-amino-4-sulfosäure kuppelt und den so er haltenen Farbstoff mit Chromformia.t be handelt. Der neue Farbstoff bildet ein schwärzliches Pulver,,d:as sieh in Wasser mit blauer, in verdünnter Natronlauge mit vio letter Farbe löst. Er erzeugt auf Baumwolle mit Hilfe von Chrombeizen gedruckt, reine indigoblaue Töne. . PATENT CLAIM: Process for the preparation of a new dye, characterized in that the 2,3-oxynaphthoic acid is coupled with the diazo compound of 1-oxynaphthalene-8-sulfamide-2-amino-4-sulfonic acid and the dye thus obtained is coupled with chromium formia .t treats. The new dye forms a blackish powder, which dissolves in water with blue, in dilute sodium hydroxide solution with violet color. Printed on cotton with the help of chrome stains, it produces pure indigo blue tones. .
CH111926D 1924-03-20 1924-03-20 Process for the preparation of a new dye. CH111926A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH111926T 1924-03-20
CH111565T 1924-03-20

Publications (1)

Publication Number Publication Date
CH111926A true CH111926A (en) 1925-09-16

Family

ID=25707884

Family Applications (1)

Application Number Title Priority Date Filing Date
CH111926D CH111926A (en) 1924-03-20 1924-03-20 Process for the preparation of a new dye.

Country Status (1)

Country Link
CH (1) CH111926A (en)

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