CH189052A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH189052A
CH189052A CH189052DA CH189052A CH 189052 A CH189052 A CH 189052A CH 189052D A CH189052D A CH 189052DA CH 189052 A CH189052 A CH 189052A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
monoazo dye
pyrazolone
phenyl
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 CH189052A publication Critical patent/CH189052A/en

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Description

  

  Verfahren zur Herstellung eines     Dionoazofarbstoffes.       Gemäss dem im Hauptpatent beschriebenen  Verfahren erhält man einen Wolle in echten  Tönen anfärbenden     Azofarbstoff,    wenn man       Anthranilsäure    dianotiert und die     Diazover-          bindung    mit einem     Pyrazolon    kuppelt, wel  ches in der     1-Stellung    durch einen     Phenylrest     substituiert ist, der noch durch einen     Sulfo-          amidophenylrest    weiter substituiert ist.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff von ganz ähnlichen  Eigenschaften, wenn man     4-Nitro-6-chlor-2-          amino-l-oxybeiizol    dianotiert und die     Diazo-          verbindung    mit     1-(Phenyl-4'-carbonsäure-          anilid    - 3"-     sulfosäure)    - 3 -     methyl-        "5        -pyrazolon     kombiniert.    <I>Beispiel:</I>    37 Teile     1-(Phenyl-4'-carbonsäureanilid-3"-          sulfosäure)-3-methyl-5-pyrazolon    werden in  Wasser mit Soda gelöst.

   Zu der mit über  schüssiger Soda versetzten Lösung gibt man  eine aus 18,9 Teilen 4-Nitro-6-chlor-2-amino-         1-oxybenzol    hergestellte     Diazoverbindung.     Nach Beendigung der     Farbstoffbildung    wird  erwärmt,     ausgesalzen    und abgesaugt. Der  getrocknete     Farbstoff    löst sich leicht in Wasser  und färbt Wolle nach dem     Einbadchromver-          fahren    in orange Tönen von guten Echtheits  eigenschaften an.



  Process for the preparation of a dionoazo dye. According to the process described in the main patent, an azo dye which dyes wool in real shades is obtained if anthranilic acid is dianotized and the diazo compound is coupled with a pyrazolone which is substituted in the 1-position by a phenyl radical which is also substituted by a sulfoamidophenyl radical is further substituted.



  As has now been further found, a dye with very similar properties is obtained if 4-nitro-6-chloro-2-amino-1-oxybeiizole is dianotized and the diazo compound with 1- (phenyl-4'-carboxylic acid anilide - 3 "- sulfonic acid) - 3 - methyl-" 5 -pyrazolone combined. <I> Example: </I> 37 parts of 1- (phenyl-4'-carboxylic acid anilide-3 "-sulfonic acid) -3-methyl-5-pyrazolone are dissolved in water with soda.

   A diazo compound prepared from 18.9 parts of 4-nitro-6-chloro-2-amino-1-oxybenzene is added to the solution with excess soda. After the dye formation has ended, it is heated, salted out and suction filtered. The dried dye dissolves easily in water and dyes wool in orange shades with good fastness properties using the single-bath chrome process.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, dass man 4-Nitro-6-chlor-2-amino-l-oxybenzol di anotiert und die Diazoverbindung mit 1 (Phenyl-4'-carbonsäureanilid-3"-sulfosäure)-3- methyl-5-pyrazolon kuppelt. Der Farbstoff löst sich leicht in Wasser und färbt Wolle nach dem Einbadchrom- verfahren in echten orangen Tönen an. PATENT CLAIM: A process for the production of a mono azo dye, characterized in that 4-nitro-6-chloro-2-amino-1-oxybenzene is anotated and the diazo compound with 1 (phenyl-4'-carboxylic anilide-3 "sulfonic acid) - 3-methyl-5-pyrazolone couples, the dye dissolves easily in water and dyes wool in real orange shades using the single-bath chrome process.
CH189052D 1934-06-29 1935-05-29 Process for the preparation of a monoazo dye. CH189052A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE189052X 1934-06-29
CH185147T 1935-05-29

Publications (1)

Publication Number Publication Date
CH189052A true CH189052A (en) 1937-01-31

Family

ID=25721168

Family Applications (1)

Application Number Title Priority Date Filing Date
CH189052D CH189052A (en) 1934-06-29 1935-05-29 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH189052A (en)

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