CH115939A - Process for the preparation of an o-oxyazo dye. - Google Patents

Process for the preparation of an o-oxyazo dye.

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Publication number
CH115939A
CH115939A CH115939DA CH115939A CH 115939 A CH115939 A CH 115939A CH 115939D A CH115939D A CH 115939DA CH 115939 A CH115939 A CH 115939A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
oxyazo
oxybenzene
pyrazolone
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH115939A publication Critical patent/CH115939A/en

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Description

  

  Verfahren zur Darstellung eines     o-Oayazofarbstoffes.       Wie gefunden wurde, entsteht bei der       l'upplung    von     diazotierter        2-Amino-4-nitro-          1-oxybenzol-6-sulfosäure    mit     1-ss-Naphthyl-3-          methyl-5-pyra.zolon    ein Farbstoff, welcher  von grossem Wert für die Wollfärberei ist.  Die     nachchromierte    oder mit Hilfe einer  Chrombeize hergestellte Färbung zeichnet  sich durch ihre Echtheitseigenschaften, beson  ders durch Licht- und Schwefelechtheit, aus.

         Beispiel:     Zu einer     Aufschlemmung    von 22,6 Teilen       1-6-Naphthyl-3-methyl-5-pyrazolon    in der     10-          fachen    Menge Wasser wird bei 3-5   die  aus 23,5 Teilen     2-Amino-4-nitro-l-oxybenzol-          6-sulfosäure    bereitete     Diazoverbindung    ge  geben. Nach dem Zusatz von 5,3 Teilen was-         serfreiem    Natriumkarbonat wird 6-8 Stun  den gerührt.

   Der Farbstoff ist zum     grössten     Teil     ausgeschieden.    Er wird in der üblichen  Weise aufgearbeitet und färbt Wolle im Ver  ein mit Chrombeizen     orange.  



  Process for the preparation of an o-oayazo dye. As has been found, the coupling of diazotized 2-amino-4-nitro-1-oxybenzene-6-sulfonic acid with 1-ss-naphthyl-3-methyl-5-pyrazolone produces a dye which is of great value for wool dyeing. The coloration, which has been chromed or produced with the help of a chromium stain, is distinguished by its fastness properties, particularly light and sulfur fastness.

         Example: For a slurry of 22.6 parts of 1-6-naphthyl-3-methyl-5-pyrazolone in 10 times the amount of water, at 3-5, the mixture of 23.5 parts of 2-amino-4-nitro-1 -oxybenzene-6-sulfonic acid prepared diazo compound give ge. After the addition of 5.3 parts of anhydrous sodium carbonate, the mixture is stirred for 6-8 hours.

   Most of the dye has been eliminated. It is worked up in the usual way and dyes wool orange in combination with chrome stains.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines o-Oxya7o- farbstoffes von guten Echtheitseigenschaften, der Wolle unter Chrombehandlung orange färbt, dadurch -gekennzeichnet, dass man 2- Diazo-4-nitro-l-oxybenzol-6-sulfosäure mit 1-ss-Naphthyl-3-methyl-5-pyrazolon kuppelt. PATENT CLAIM: Process for the preparation of an o-Oxya7o dye with good fastness properties, which dyes wool orange under chromium treatment, characterized in that 2- diazo-4-nitro-1-oxybenzene-6-sulfonic acid is mixed with 1-ss-naphthyl 3-methyl-5-pyrazolone couples.
CH115939D 1924-04-19 1925-04-18 Process for the preparation of an o-oxyazo dye. CH115939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE115939X 1924-04-19

Publications (1)

Publication Number Publication Date
CH115939A true CH115939A (en) 1926-07-16

Family

ID=5654483

Family Applications (1)

Application Number Title Priority Date Filing Date
CH115939D CH115939A (en) 1924-04-19 1925-04-18 Process for the preparation of an o-oxyazo dye.

Country Status (1)

Country Link
CH (1) CH115939A (en)

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