CH240617A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH240617A
CH240617A CH240617DA CH240617A CH 240617 A CH240617 A CH 240617A CH 240617D A CH240617D A CH 240617DA CH 240617 A CH240617 A CH 240617A
Authority
CH
Switzerland
Prior art keywords
new
preparation
dye
monoazo dye
parts
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH240617A publication Critical patent/CH240617A/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 Herstellung eines neuen     11Zonoazofarbstoffes.       Die vorliegende Erfindung betrifft ein  Verfahren zur Herstellung eines neuen     ehro-          mierbaren        Monoazowollfarbstoffes,    indem     di-          azotierte    6 -     Nitro    - 2 -     aminophenol    - 4 -     sulf        on-          säure    mit 1- (p - 4' -     Chlorphenoxyphenyl)    - 3     -          inethyl-5-pyrazolon    gekuppelt wird.

      <I>Beispiel:</I>  4,68 Teile     6-Nitro-2-aminophenol-4-sulfon-          säure    werden mit 60 Teilen Wasser und  5 Teilen 36%iger Salzsäure gerührt. Dann  versetzt man mit einer Lösung von 1,4 Teilen       Natriumnitrit    in 10 Teilen Wasser, wobei die  Temperatur auf 5  C gehalten     wird.    Die so  erhaltene     Diazolösung    lässt man innerhalb  10 Minuten in eine Lösung von 6,01 Teilen  1- (p -     4'-        Chlorphenoxyphenyl)    - 3 -     methyl    - 5     -          pyrazolon    einfliessen.

   Diese     Pyrazolonlösung          wurde    durch Lösen des     Pyrazolons    in 100  Teilen Wasser unter Zugabe einer solchen  Menge Natronlauge, bis die Lösung eben  auf gelbes     Claytonpapier    alkalisch reagiert,  und nachfolgende Zugabe von 8 Teilen was-         serfreiem        Natriumcarbonat    hergestellt. Nach  dem Rühren während 15 Stunden     wird    der  neue Farbstoff     abfiltriert        und    bei 50  C ge  trocknet.  



  Der neue Farbstoff färbt Wolle nach dem       Metachromverfahren    in     orangebraunen    Farb  tönen von ausgezeichneter Wasch-, Walk-.,       Potting-    und Lichtechtheit.



  Process for the preparation of a new 11-zonoazo dye. The present invention relates to a process for the production of a new earmouldable monoazo wool dye by mixing diacotated 6-nitro-2-aminophenol-4-sulfonic acid with 1- (p-4'-chlorophenoxyphenyl) -3-ynethyl-5 -pyrazolon is coupled.

      <I> Example: </I> 4.68 parts of 6-nitro-2-aminophenol-4-sulfonic acid are stirred with 60 parts of water and 5 parts of 36% strength hydrochloric acid. A solution of 1.4 parts of sodium nitrite in 10 parts of water is then added, the temperature being maintained at 5 ° C. The diazo solution thus obtained is allowed to flow into a solution of 6.01 parts of 1- (p-4'-chlorophenoxyphenyl) -3-methyl-5-pyrazolone within 10 minutes.

   This pyrazolone solution was prepared by dissolving the pyrazolone in 100 parts of water with the addition of such an amount of sodium hydroxide solution until the solution just reacts alkaline on yellow clay paper, and then adding 8 parts of anhydrous sodium carbonate. After stirring for 15 hours, the new dye is filtered off and dried at 50.degree.



  The new dye dyes wool using the metachrome process in orange-brown shades of excellent wash, milled, potting and lightfastness.

Claims (1)

PATEITA@SPRUCH: Verfahren zur Herstellung eines neuen chromierbaren Monoazowollfarbstoffes, da durch gekennzeichnet, dass man diazotierte 6 - Nitro - 2 - aminophenol-4-sulf onsäure mit 1- (p - 4'- Chlorphenoxyphenyl) - 3-methyl-5-pyr- azolon kuppelt. PATEITA @ SPRUCH: Process for the production of a new chromable monoazo wool dye, characterized in that diazotized 6 - nitro - 2 - aminophenol-4-sulfonic acid with 1- (p - 4'-chlorophenoxyphenyl) - 3-methyl-5-pyr - azolon domes. Der neue Farbstoff färbt Wolle nach dem Metachromverfahren in orangebraunen Farb tönen von ausgezeichneter Wasch-, Walk-, Potting- und Lichtechtheit. The new dye dyes wool using the metachrome process in orange-brown shades of excellent wash, milled, potting and lightfastness.
CH240617D 1942-09-18 1943-09-17 Process for the preparation of a new monoazo dye. CH240617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB240617X 1942-09-18

Publications (1)

Publication Number Publication Date
CH240617A true CH240617A (en) 1946-01-15

Family

ID=10205745

Family Applications (1)

Application Number Title Priority Date Filing Date
CH240617D CH240617A (en) 1942-09-18 1943-09-17 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH240617A (en)

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