CH223709A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH223709A
CH223709A CH223709DA CH223709A CH 223709 A CH223709 A CH 223709A CH 223709D A CH223709D A CH 223709DA CH 223709 A CH223709 A CH 223709A
Authority
CH
Switzerland
Prior art keywords
azo dye
production
new azo
new
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH223709A publication Critical patent/CH223709A/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
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/12—Disazo dyes in which the coupling component is a heterocyclic compound

Landscapes

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

Description

  

  <B>Zusatzpatent</B> zum     Hauptpatent    Nr.     2207"51.            Verfahren    zur     Iier        stellung    eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen  neuen     Azofarbstoff    erhält, wenn man 1     Mol     der     Diphenyl-4',4"-di-(3-methyl-5-pyrazo-          lon)-2',2"-disulfonsäure    mit 2     Mol    der     Diazo-          verbindung    des     1-Amino-2-chlorbenzols    ver  einigt.  



  Der neue Farbstoff stellt ein gelbes Pulver  dar, das Wolle aus saurem Bade in reinen  gelben Tönen von bemerkenswerter Wasch  echtheit färbt.  



  <I>Beispiel:</I>  Man löst 12,7 Teile     1-Amino-2-chlor-          benzol    in 90 Teilen Salzsäure von 10     %    ,  kühlt durch Zufügen von     Eis    auf 0   und     di-          azotiert    mit einer Lösung von 7 Teilen Na  triumnitrit in 30 Teilen Wasser.

   Diese     Diazo-          lösung    giesst man in eine mit Eis gekühlte  Lösung von 25,3 Teilen Diphenyl-4',4"-di-         (8-methyl-5-pyrazolon)-2',2"-disulfonsäure    in  200 Teilen Wasser und 18 Teilen     Natrium-          carbonat.    Nach beendigter Kupplung     wird     der Farbstoff     ausgesalzen,        filtriert    und ge  trocknet.



  <B> Additional patent </B> to the main patent No. 2207 "51. Process for Iier position of a new azo dye. It has been found that a new azo dye is obtained if 1 mol of the diphenyl-4 ', 4" -di- (3-methyl-5-pyrazolone) -2 ', 2 "-disulfonic acid combined with 2 moles of the diazo compound of 1-amino-2-chlorobenzene.



  The new dye is a yellow powder that dyes wool from an acid bath in pure yellow shades that are remarkably fast to wash.



  <I> Example: </I> 12.7 parts of 1-amino-2-chlorobenzene are dissolved in 90 parts of 10% hydrochloric acid, the mixture is cooled to 0 by adding ice and diacotized with a solution of 7 parts of Na trium nitrite in 30 parts of water.

   This diazo solution is poured into a solution, cooled with ice, of 25.3 parts of diphenyl-4 ', 4 "-di (8-methyl-5-pyrazolone) -2', 2" -disulfonic acid in 200 parts of water and 18% Share sodium carbonate. After the coupling is complete, the dye is salted out, filtered and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man 1 Mol der Diphenyl-4',4"-di-(3-methyl- 5-pyrazolon)-2';2"-disulfonsäure mit 2 Mol der Diazoverbindung des 1-Amino-2-chlor- benzols vereinigt. Der neue Farbstoff stellt ein gelbes Pulver dar, das Wolle aus saurem Bade in reinen gelben Tönen von bemerkenswerter Wasch echtheit färbt. Claim: Process for the preparation of a new azo dye, characterized in that 1 mol of diphenyl-4 ', 4 "-di (3-methyl-5-pyrazolone) -2'; 2" -disulfonic acid is mixed with 2 mol of the diazo compound des 1-amino-2-chlorobenzene combined. The new dye is a yellow powder that dyes wool from an acid bath in pure yellow shades that are remarkably fast to wash.
CH223709D 1941-03-29 1941-03-29 Process for the production of a new azo dye. CH223709A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH223709T 1941-03-29
CH220751T 1941-03-29

Publications (1)

Publication Number Publication Date
CH223709A true CH223709A (en) 1942-09-30

Family

ID=25726496

Family Applications (1)

Application Number Title Priority Date Filing Date
CH223709D CH223709A (en) 1941-03-29 1941-03-29 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH223709A (en)

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