CH302024A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH302024A
CH302024A CH302024DA CH302024A CH 302024 A CH302024 A CH 302024A CH 302024D A CH302024D A CH 302024DA CH 302024 A CH302024 A CH 302024A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
parts
amino
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 CH302024A publication Critical patent/CH302024A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur     Herstellung        eines        Azofarbstoffes.            (legenstand    des vorliegenden     Zusatzpaten-          tes    ist ein Verfahren zur Herstellung eines       Azofarbstoffes,    welches dadurch gekennzeich  net ist, dass man die     Diazoniumverbindung    aus         1-Aminobenzol-3-(ss-chloräthylsulfon)    mit     2-          Amino    - 8 -     oxynaphthalin    - 6 -     sulfonsäur    e verei  nigt.

      <I>Beispiel:</I>    12,3     Gewiehtsteile        2-Amino-8-oxyna,phtha-          liti-6-sulfonsäure        (97,10/aig)    werden in 375       Volumteilen    Wasser und 50     Volumteilen        ln-          Natronlauge    gelöst.

   Die filtrierte Lösung wird  in eine     -Mischung    aus 75     Volumteilen        ln-Salz-          .I        I        *i        Lire        -und        175        Volumteilen        Wasser        eingerührt,          @vobei    die 2-Amino-8-oxvnaphthalin-6-sulfon-    säure in feinverteilter Form ausfällt.

   In diese  saure Suspension lässt man bei 5-10  C die  aus 11 Gewichtsteilen     1-Aminobenzol-3-(ss-          ehloräthylsulfon)    in üblicher Weise herge  stellte     Diazolösung    einfliessen. Nach beendeter  Kupplung wird der     Azofarbstoff    der folgen  den Formel:  
EMI0001.0039     
    mit     Kaliumchlorid        ausgesalzen,    abgesaugt, mit  <B>10</B>     1/o        irrer        Kaliumchloridlösung    gewaschen und  getrocknet.  



  Das so erhaltene Produkt stellt ein dunkel  rotes Pulver dar, das Wolle in roten Tönen  von guten Echtheitseigenschaften färbt.



  Process for the preparation of an azo dye. (The status 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-3- (ss-chloroethylsulfone) with 2-amino-8-oxynaphthalene-6-sulfonic acid united.

      <I> Example: </I> 12.3 parts by weight of 2-amino-8-oxyna, phthalite-6-sulfonic acid (97.10 / aig) are dissolved in 375 parts by volume of water and 50 parts by volume of sodium hydroxide solution.

   The filtered solution is stirred into a mixture of 75 parts by volume of ln salt and 175 parts by volume of water, with the 2-amino-8-oxynaphthalene-6-sulfonic acid precipitating in finely divided form.

   The diazo solution prepared in the usual manner from 11 parts by weight of 1-aminobenzene-3- (ss-ehloräthylsulfon) is allowed to flow into this acidic suspension at 5-10 ° C. After the coupling is complete, the azo dye will have the following formula:
EMI0001.0039
    Salted out with potassium chloride, filtered off with suction, washed with <B> 10 </B> 1 / o crazy potassium chloride solution and dried.



  The product thus obtained is a dark red powder which dyes wool in red shades with good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, da.ss man die Diazoniumverbindung aus 1-Aminobenzol-3- (ss-ehloräthjsulfon) mit 2-Amino-8-oxynaph- thalin-6-sulfonsäure vereinigt. Das so erhaltene Produkt stellt ein dunkel rotes Pulver dar, das Wolle in roten Tönen von guten Echtheitseigenschaften färbt. Claim: Process for the production of an azo dye, characterized in that the diazonium compound from 1-aminobenzene-3- (ss-ehloräthjsulfon) is combined with 2-amino-8-oxynaphthalene-6-sulfonic acid. The product thus obtained is a dark red powder which dyes wool in red shades with good fastness properties.
CH302024D 1950-07-03 1951-06-29 Process for the preparation of an azo dye. CH302024A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE302024X 1950-07-03
CH296340T 1954-01-29

Publications (1)

Publication Number Publication Date
CH302024A true CH302024A (en) 1954-09-30

Family

ID=25733681

Family Applications (1)

Application Number Title Priority Date Filing Date
CH302024D CH302024A (en) 1950-07-03 1951-06-29 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH302024A (en)

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