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CH139996A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH139996A
CH139996A CH139996DA CH139996A CH 139996 A CH139996 A CH 139996A CH 139996D A CH139996D A CH 139996DA CH 139996 A CH139996 A CH 139996A
Authority
CH
Switzerland
Prior art keywords
preparation
chloro
dye
azo dye
water
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 CH139996A publication Critical patent/CH139996A/en

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Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Gegenstand dieser     Anmeldung    ist ein  Verfahren zur     Darstellung    eines     Azofarb-          atoffes:     
EMI0001.0006     
  
    1-Amino-2-chlor-6-methylbenzol-4-sulfosäure <SEP> > <SEP> 1-(4'-Chlor-2'-sulfophenyl)  3-methyl-5-pyrazolon,       welches     dadurch    gekennzeichnet ist, dass man       dia.zotierte        1-Amino-2-chlor-6-methylbenzo@l-4-          sulfosäure    mit     1-(4'-Chlor-2'-sulfophenyl)-3-          methyl-5-pyra,zoIon    kuppelt.

   Der Farbstoff  stellt ein gelbes, in Wasser leicht lösliches Pul  ver dar, welches Wolle in sehr egalem, grün  stichig gelbem Farbton von hervorragender  Licht- und Wasserechtheit anfärbt.  



       Beispiel     288,5 Gewichtsteile     1-(4'-Chlor-2'-sulfo-          phenyl)-3-methyl-5-pyrazolon    werden in un  gefähr 1000 Gewichtsteilen Wasser und 212       Gewichtsteilen    Soda gelöst. Dazu lässt man  eine in bekannter Weise aus 221,5 Gewichts  teilen 1-Amino-2-chlor-6-methylbenzal-4-sul-         fosäure    erhaltene     Dia.zolösung    langsam ein  laufen. Nach beendeter 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 von     hervorragender    Licht- und Was  serechtheit anfärbt.



  Process for the preparation of an azo dye. The subject of this application is a process for the preparation of an azo dye:
EMI0001.0006
  
    1-Amino-2-chloro-6-methylbenzene-4-sulfonic acid <SEP>> <SEP> 1- (4'-chloro-2'-sulfophenyl) 3-methyl-5-pyrazolone, which is characterized in that one dia.zotierte 1-amino-2-chloro-6-methylbenzo @ 1-4-sulfonic acid with 1- (4'-chloro-2'-sulfophenyl) -3-methyl-5-pyra, zoIon couples.

   The dye is a yellow, easily soluble in water powder, which dyes wool in a very indifferent, green, yellowish shade of excellent light and water fastness.



       Example 288.5 parts by weight of 1- (4'-chloro-2'-sulfophenyl) -3-methyl-5-pyrazolone are dissolved in approximately 1000 parts by weight of water and 212 parts by weight of soda. For this purpose, a dialysis solution obtained in a known manner from 221.5 parts by weight of 1-amino-2-chloro-6-methylbenzal-4-sulphonic acid is slowly run in. After the coupling has ended, the dye is made to separate out using common salt.

   The dye is a yellow powder, easily soluble in water, which dyes wool in a very indifferent, greenish yellow shade of excellent light and water fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Aze- farbstoffes, dadurch gekennzeichnet, dass man diazotierte 1-Amino-2-chlor-6-methylbenzol-a- sulfosäure mit 1-(4'-Chlor-2'-sulfophenyl)-3- methyl-5-pyrazolon kuppelt. Der Farbstoff stellt ein gelbes, in Was ser leicht lösliches Pulver dar. welches Wolle in sehr egalem, grünstiehig gelbem Farbton von hervorragender Licht- und Wasserecht heit anfärbt. PATENT CLAIM: A process for the preparation of an aze dye, characterized in that diazotized 1-amino-2-chloro-6-methylbenzene-a-sulfonic acid with 1- (4'-chloro-2'-sulfophenyl) -3-methyl- 5-pyrazolone couples. The dye is a yellow powder that is easily soluble in water. Which dyes wool in a very unimportant, greenish yellow shade of excellent light and water fastness.
CH139996D 1927-05-11 1928-05-04 Process for the preparation of an azo dye. CH139996A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE139996X 1927-05-11
CH136647T 1928-05-04

Publications (1)

Publication Number Publication Date
CH139996A true CH139996A (en) 1930-05-15

Family

ID=25712751

Family Applications (1)

Application Number Title Priority Date Filing Date
CH139996D CH139996A (en) 1927-05-11 1928-05-04 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH139996A (en)

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