CH302025A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH302025A
CH302025A CH302025DA CH302025A CH 302025 A CH302025 A CH 302025A CH 302025D A CH302025D A CH 302025DA CH 302025 A CH302025 A CH 302025A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
aminobenzene
methyl
sulfonic acid
Prior art date
Application number
Other languages
German (de)
Inventor
Farbwerke Hoechst Akt Bruening
Original Assignee
Hoechst 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 Hoechst Ag filed Critical Hoechst Ag
Publication of CH302025A publication Critical patent/CH302025A/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
    • C09B62/00—Reactive dyes, i.e. dyes which form covalent bonds with the substrates or which polymerise with themselves

Landscapes

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

Description

  

  Verfahren zur Herstellung     eines        Azofarbstoffes.            Gegenstand    des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Herstellung eines       Azofarbstoffes,    welches dadurch gekennzeich  net ist, dass man die     Diazoniumverbindung       aus     1-Aminobenzol-2-sulfonsäure    mit     1-(3'-,B-          C        hloräthylsulfonylphenyl)    -     3-methyl-5-pyrazo.     Ion     vereinigt.       <I>Beispiel:

  </I>    7,5     Clewichtsteile        1-(3'-fl-Chloräthylsulfo-          ny1phenyl)-3-methyl-5-pyrazolon    werden in 50  Gewichtsteilen     Methanol    gelöst und mit einer  in üblicher Weise hergestellten     Diazolösung       aus 5 Gewichtsteilen     1-Aminobenzol-2-sulfon-          säure        (89        %        ig)

          bei        PH        5-6        vereinigt.        Nach        be-          endeter    Kupplung wird der     Azofarbstoff    der  folgenden Formel:  
EMI0001.0030     
    mit     Koehsalz        ausgesalzen,    abgesaugt und ge  trocknet.  



  Das so erhaltene Produkt stellt ein gelbes  Pulver dar, das Wolle in lebhaften Gelbtönen  von guten Echtheitseigenschaften färbt.



  Process for the preparation of an azo dye. The subject of the present additional patent is a process for the production of an azo dye, which is characterized in that the diazonium compound from 1-aminobenzene-2-sulfonic acid with 1- (3 '-, B-chloroethylsulfonylphenyl) - 3-methyl-5 -pyrazo. Ion united. <I> example:

  7.5 parts by weight 1- (3'-fl-chloroethylsulfony1phenyl) -3-methyl-5-pyrazolone are dissolved in 50 parts by weight of methanol and mixed with a conventionally prepared diazo solution of 5 parts by weight of 1-aminobenzene-2 -sulfonic acid (89%)

          combined at PH 5-6. When the coupling is complete, the azo dye has the following formula:
EMI0001.0030
    Salted out with Koehsalz, vacuumed and dried.



  The product thus obtained is a yellow powder which dyes wool in vivid yellow tones with good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man die Diazoniumverbindung aus 1-Aminobenzol-2- sulfonsäure mit 1-(3'-ss-Chloräthylsulfonylphe- nyl)-3-methyl-5-pyrazolon vereinigt. Das so erhaltene Produkt stellt ein gelbes Pulver dar, das Wolle in lebhaften Gelbtönen von guten Echtheitseigenschaften färbt. Claim: Process for the production of an azo dye, characterized in that the diazonium compound from 1-aminobenzene-2-sulfonic acid is combined with 1- (3'-ss-chloroethylsulfonylphenyl) -3-methyl-5-pyrazolone. The product thus obtained is a yellow powder which dyes wool in vivid yellow tones with good fastness properties.
CH302025D 1954-01-29 1954-01-29 Process for the preparation of an azo dye. CH302025A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH296340T 1954-01-29
CH302025T 1954-01-29

Publications (1)

Publication Number Publication Date
CH302025A true CH302025A (en) 1954-09-30

Family

ID=25733676

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302025D CH302025A (en) 1954-01-29 1954-01-29 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH302025A (en)

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