CH139999A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH139999A
CH139999A CH139999DA CH139999A CH 139999 A CH139999 A CH 139999A CH 139999D A CH139999D A CH 139999DA CH 139999 A CH139999 A CH 139999A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
chloro
methyl
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 CH139999A publication Critical patent/CH139999A/en

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Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Gegenstand dieser     Anmelld'ung    ist ein  Verfahren zur Darstellung eines     Azofarb-          stoffes:     
EMI0001.0005     
  
    m-Aminobenzoesäureanilid <SEP> <B>#,</B> <SEP> 1-(4'-Chlor-2'-sulfophenyl-3-methyl-5-pyrazolon,       welches dadurch     .gekennzeichnet    ist, dass man       diazotiertes        m-Aminobenzoesäureanilid    mit       1-(4'-Chlor-2'-sulfo.phenyl    -.3 -     methyl-5-pyr-          a.zolon    kuppelt.

   Der Farbstoff stellt ein gel  bes, in Wasser leicht lösliches Pulver dar,  welches Wolle in sehr egalem,     grünstichig          gelbem    Farbton anfärbt. Die Färbung zeich  net sich durch     hervorragende    Lichtechtheit,  gute Egalität und Waschechtheit aus.  



  <I>Beispiel</I>       288,b    Gewichtsteile     1-(4'-Chl.or-2'-sulfo-          phenyl)-3-methyl-5-pyrazolon    werden in un  gefähr<B>1000</B>     Gewichtsteilen    Wasser und- 212<B>2</B>       Gewichtsteilen    Soda gelöst. Dazu lässt man       eine    in bekannter Weise aus 2'12 Gewichts  teilen     m-Amdnobenzoesäureanilid    erhaltene       Diazolösung    langsam     einlaufen.    Nach been  deter Kupplung wird der Farbstoff durch  Kochsalz zur     Abscheidung    gebracht.

   Der  Farbstoff stellt     ein    gelbes, in Wasser leicht    lösliches Pulver dar, welches Wolle in sehr       egalem,        grünstichig    gelbem Farbton anfärbt.  Die Färbung     zeichnet        sich    durch hervor  ragende Lichtechtheit,     gute    Egalität und  Waschechtheit aus.



  Process for the preparation of an azo dye. The subject of this application is a method for the preparation of an azo dye:
EMI0001.0005
  
    m-aminobenzoic acid anilide <SEP> <B> #, </B> <SEP> 1- (4'-chloro-2'-sulfophenyl-3-methyl-5-pyrazolone, which is characterized in that diazotized m- Aminobenzoic anilide couples with 1- (4'-chloro-2'-sulfo.phenyl -.3-methyl-5-pyr-a.zolon.

   The dye is a yellow powder, easily soluble in water, which dyes wool in an even, greenish yellow shade. The dyeing is characterized by excellent lightfastness, good levelness and washfastness.



  <I> Example </I> 288, b parts by weight of 1- (4'-chloro-2'-sulfophenyl) -3-methyl-5-pyrazolone are approximately 1000 parts by weight Dissolved water and 2 parts by weight of soda. For this purpose, a diazo solution obtained in a known manner from 2'12 parts by weight of m-amnobenzoic anilide is slowly run in. After the coupling has been completed, the dye is made to separate using common salt.

   The dye is a yellow powder which is easily soluble in water and which dyes wool in a very even, greenish yellow shade. The dyeing is characterized by excellent lightfastness, good levelness and washfastness.

Claims (1)

<B>PATENTANSPRÜCHE:</B> Verfahren zur Darstellung eines Azo- farbstoffes, dadurch gekennzeichnet, da.ss man diazotiertes m-Aminobenzoesäureanilid mit 1-i(4'.. Chlor-2"- sulfophenyl- 3-methyl- 5-pyr- azalon kuppelt. Der Farbstoff stellt ein gelbes, <B> PATENT CLAIMS: </B> Process for the preparation of an azo dye, characterized in that one diazotized m-aminobenzoic acid anilide with 1-i (4 '.. chloro-2 "- sulfophenyl- 3-methyl- 5- pyr-azalone coupling. The dye represents a yellow, in @%V as sei leicht lösliches Pulver dar, welches Wolle in sehr egalem, grünstichig gelbem Farbton anfärbt. Die Färbung zeichnet sich durch hervorragende Lichtechtheit, gute Egalität und Waschechtheit .aus. in @% V as is a readily soluble powder, which dyes wool in a very even, greenish yellow shade. The dyeing is characterized by excellent lightfastness, good levelness and washfastness.
CH139999D 1927-05-11 1928-05-04 Process for the preparation of an azo dye. CH139999A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE139999X 1927-05-11
CH136647T 1928-05-04

Publications (1)

Publication Number Publication Date
CH139999A true CH139999A (en) 1930-05-15

Family

ID=25712753

Family Applications (1)

Application Number Title Priority Date Filing Date
CH139999D CH139999A (en) 1927-05-11 1928-05-04 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH139999A (en)

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