CH201959A - Process for the preparation of an azo dye containing complexed chromium. - Google Patents

Process for the preparation of an azo dye containing complexed chromium.

Info

Publication number
CH201959A
CH201959A CH201959DA CH201959A CH 201959 A CH201959 A CH 201959A CH 201959D A CH201959D A CH 201959DA CH 201959 A CH201959 A CH 201959A
Authority
CH
Switzerland
Prior art keywords
chromium
azo dye
preparation
dye containing
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 CH201959A publication Critical patent/CH201959A/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
    • C09B45/38—Preparation from compounds with —OH and —COOH adjacent in the same ring or in peri position
    • C09B45/40—Chromium compounds

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

Description

  

  Verfahren zur Herstellung eines komplex gebundenes Chrom enthaltenden       Azofarbstoifes.       Es wurde gefunden,     .dass        ein        wertvoller,     komplex gebundenes Chrom enthaltender       Azofarbstoff    hergestellt werden kann, wenn  der     Azofarbstoff    der Formel  
EMI0001.0007     
    mit chromabgebenden Mitteln behandelt  wird.  



  Der neue     chromhaltige    Farbstoff stellt  ein gelbes Pulver dar, das sich in Wasser und  in     konzentrierter    Schwefelsäure mit gelber  Farbe löst und Wolle aus schwefelsaurem  Bade     in    gleichmässigen, reinen, grünstickig  gelben Tönen von vorzüglicher Echtheit  färbt.  



  Der dem Verfahren als Ausgangsstoff  dienende Farbstoff der obigen Formel kann    erhalten werden,     indem    man dianotierte 1-(3'       Aminobenzol-1'-sulfoyl-)amino-4-oxy-3-carb-          oxybenzol-5-sulfonsäure    mit     3-Methyl-5-pyr-          azolon    in alkalischer Lösung vereinigt.  



  Die     Behandlung        mit    chromabgebenden  Mitteln kann in bekannter Weise, durch Er  hitzen in saurem, neutralem oder alkalischem  Medium, mit oder ohne geeignete Zusätze,  wie Salze anorganischer oder organischer       Säuren    (z. B.     Kochsalz,        Natriumacetat,    Na  triumtartrat), in Gegenwart oder Abwesen  heit organischer     Lösungs-    oder Verteilungs  mittel,     wie    Alkohol,     Glycerin,        Pyridin,    offen  oder unter Druck, erfolgen.

      <I>Beispiel:</I>    Die durch     Diazotieren    von 38,8 Teilen       1-(3'-Aminobenzol-1'-sulfoyl-)amino-4-oxy-3-          carboxyhenzol-5-sulfontsüure,        Vereinigen        mit          1.0,3    Teilen     3-Methyl-5-pyrazolon    in alkali  scher     Lösung,    Ansäuern,     Abfiltrieren    und           Auswaschen    mit Kochsalzlösung in üblicher  \'eise erhaltene,

       etwa    20 bis     25%ige        Farb-          stoffpaste    wird in 500 Teilen     'i'asser    durch  Erwärmen gelöst und die     Lösung    nach Zu  satz einer etwa. 8 %     igen        Chromsulfatlösung,     die<B>9,25</B> Teile     Cr.-,0,    enthält, 20 Stunden  rückfliessend gekocht. Hierauf wird mit Soda       neutralisiert    und der Farbstoff durch Zugabe  von Kochsalz abgeschieden,     abfiltriert    und  getrocknet.



  Process for the production of an azo dye containing complexed chromium. It has been found that a valuable, complex-bound chromium-containing azo dye can be produced if the azo dye of the formula
EMI0001.0007
    is treated with chromium-releasing agents.



  The new chromium-containing dye is a yellow powder that dissolves in water and concentrated sulfuric acid with a yellow color and dyes wool from a sulfuric acid bath in uniform, pure, greenish yellow shades of excellent fastness.



  The dye of the above formula used as starting material for the process can be obtained by treating dianotated 1- (3 'aminobenzene-1'-sulfoyl-) amino-4-oxy-3-carbo-oxybenzene-5-sulfonic acid with 3-methyl- 5-pyrazolone combined in an alkaline solution.



  The treatment with chromium donating agents can be carried out in a known manner, by heating in an acidic, neutral or alkaline medium, with or without suitable additives, such as salts of inorganic or organic acids (e.g. sodium chloride, sodium acetate, sodium tartrate), in the presence or absence means organic solvents or distribution medium, such as alcohol, glycerine, pyridine, open or under pressure.

      <I> Example: </I> The obtained by diazotizing 38.8 parts of 1- (3'-aminobenzene-1'-sulfoyl-) amino-4-oxy-3-carboxyhenzene-5-sulfonic acid, combining with 1.0,3 Share 3-methyl-5-pyrazolone in an alkaline solution, acidify, filter off and wash with saline solution in the usual way,

       about 20 to 25% dye paste is dissolved in 500 parts of water by heating and the solution, after adding an approx. 8% chromium sulphate solution containing <B> 9.25 </B> parts Cr .-, 0, boiled under reflux for 20 hours. It is then neutralized with soda and the dye is deposited by adding sodium chloride, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines komplex gebundenes Chrom enthaltenden Azofarb- Stoffes. dadurch gekennzeichnet, dass der Azo- farbstoff der Formel EMI0002.0017 mit chromabgebenden Mitteln behandelt wird. Der neue chromhaltige Farbstoff stellt. ein gelbes Pulver dar, das sich in Wasser und in konzentrierter Schwefelsäure mit gel ber Farbe löst und Wolle aus schwefelsaurem Bade in gleichmässigen. reinen grünstichig gelben Tönen von vorzüglicher Echtheit färbt. PATENT CLAIM: Process for the production of an azo dye substance containing complexly bound chromium. characterized in that the azo dye of the formula EMI0002.0017 is treated with chromium-releasing agents. The new chromium-containing dye represents. a yellow powder, which dissolves in water and in concentrated sulfuric acid with a yellow color, and wool from a sulfuric acid bath in uniform. pure greenish yellow shades of excellent fastness.
CH201959D 1937-08-07 1937-08-07 Process for the preparation of an azo dye containing complexed chromium. CH201959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH201959T 1937-08-07

Publications (1)

Publication Number Publication Date
CH201959A true CH201959A (en) 1938-12-31

Family

ID=4443016

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201959D CH201959A (en) 1937-08-07 1937-08-07 Process for the preparation of an azo dye containing complexed chromium.

Country Status (1)

Country Link
CH (1) CH201959A (en)

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