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CH140007A - Process for the preparation of a yellow monoazo dye. - Google Patents

Process for the preparation of a yellow monoazo dye.

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Publication number
CH140007A
CH140007A CH140007DA CH140007A CH 140007 A CH140007 A CH 140007A CH 140007D A CH140007D A CH 140007DA CH 140007 A CH140007 A CH 140007A
Authority
CH
Switzerland
Prior art keywords
preparation
yellow
chloro
dye
monoazo dye
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 CH140007A publication Critical patent/CH140007A/en

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Description

  

  Verfahren zur Darstellung eines gelben     JIonoazofarbstoffes.          e       Gegenstand dieser Erfindung ist ein Ver  fahren zur     Darstellung    des     Azofarbstoffes:     
EMI0001.0005     
  
    1-Amino-2-chlor-6-methylbenzol-4-sulfosäure <SEP> > <SEP> 1-(2'-Chlor-5'-sulfophenyl)  3-methyl-5-pyrazolon,            welches    dadurch gekennzeichnet ist., dass man       diazotierte        1-Amino-2-chl@or-6-methylbenzol-          4..sulfosäure    mit     1-(2'-Chlor-5'-sulfophenyl)-          3-methyl-5-pyrazolon    kuppelt.  



       Beispiel     288,5 Gewichtsteile     1-(2'-Chlor-5'-s,ulfo-          hhen        3-1)-3-methyl-5-pyrazolon    werden in     un-          gef;;1ir        70e0        Gewichtsteilen    Wasser und 212  Gewichtsteilen     Soda    gelöst.

   Dazu lässt man  eine in bekannter Weise aus     2'21.5    Gewichts  teilen     1-Amino-2-chlor-6-methylbenzol-4-sul-          fosäure    erhaltene     Diazo,lösung    langsam ein  laufen.     Nach    beendeter Kupplung wird der  Farbstoff durch wenig Kochsalz zur     Ab-          cheidung    gebracht; er stellt nach dem     Al?-          saugen    und Trocknen ein gelbes Pulver dar,  welches bei spielender Löslichkeit auch in       kalkhaltigem.    Wasser Wolle in     grünstichig       gelbem Farbton anfärbt.

   Die Färbung zeich  net sich durch hervorragende Lichtechtheit,  sehr gute Egalität und Wasserechtheit aus.



  Process for the preparation of a yellow jonoazo dye. e The subject of this invention is a process for the preparation of the azo dye:
EMI0001.0005
  
    1-Amino-2-chloro-6-methylbenzene-4-sulfonic acid <SEP>> <SEP> 1- (2'-chloro-5'-sulfophenyl) 3-methyl-5-pyrazolone, which is characterized. That diazotized 1-amino-2-chloro-6-methylbenzene-4-sulfonic acid is coupled with 1- (2'-chloro-5'-sulfophenyl) -3-methyl-5-pyrazolone.



       Example 288.5 parts by weight of 1- (2'-chloro-5'-s, sulfohhen 3-1) -3-methyl-5-pyrazolone are dissolved in about 1ir 70e0 parts by weight of water and 212 parts by weight of soda.

   For this purpose, a diazo solution obtained in a known manner from 2'21.5 parts by weight of 1-amino-2-chloro-6-methylbenzene-4-sulfonic acid is slowly run in. When the coupling is complete, the dye is deposited using a little common salt; After Al? - suction and drying it is a yellow powder, which is also very soluble in calcareous powder. Water dyes wool in a greenish yellow shade.

   The dyeing is characterized by excellent lightfastness, very good levelness and waterfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines gelben Monoazafarbstoffes, dadurch gekennzeichnet, da.ss man cEazo@tierte 1-Amino-2-chlor-6-me- thylbenzo@l-@4,-,sulfosäure mit 1-(2'-Chlor-,5'- sulfophenyl)-3-m@ethyl-5-pyrazolon kuppelt. Der Farbstoff stellt ein gelbes Pulver dar, welches bei spielender Löslichkeit auch in kalkhaltigem Wasser Wolle in grünstichig gelbem Farbton von hervorragender Licht echtheit, guter Egalität und Wasserechtheit anfärbt. PATENT CLAIM: Process for the preparation of a yellow monoaza dye, characterized in that one cEazo @ tated 1-amino-2-chloro-6-methylbenzo @ l- @ 4, -, sulfonic acid with 1- (2'-chloro , 5'-sulfophenyl) -3-m @ ethyl-5-pyrazolone couples. The dye is a yellow powder which, with excellent solubility even in calcareous water, dyes wool in a green-tinged yellow shade of excellent lightfastness, good levelness and waterfastness.
CH140007D 1927-05-10 1928-05-07 Process for the preparation of a yellow monoazo dye. CH140007A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE140007X 1927-05-10
CH136648T 1928-05-07

Publications (1)

Publication Number Publication Date
CH140007A true CH140007A (en) 1930-05-15

Family

ID=25712763

Family Applications (1)

Application Number Title Priority Date Filing Date
CH140007D CH140007A (en) 1927-05-10 1928-05-07 Process for the preparation of a yellow monoazo dye.

Country Status (1)

Country Link
CH (1) CH140007A (en)

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