CH223710A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH223710A
CH223710A CH223710DA CH223710A CH 223710 A CH223710 A CH 223710A CH 223710D A CH223710D A CH 223710DA CH 223710 A CH223710 A CH 223710A
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 CH223710A publication Critical patent/CH223710A/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. 220751.         Verfahren    zur Herstellung 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    der     1-Aminobenzol-2-carbonsäure     vereinigt.  



  Der neue Farbstoff stellt ein gelbes Pulver  dar; seine     nachchromierten    Färbungen auf  Wolle weisen gelbe Töne von sehr guten  Echtheitseigenschaften auf.  



       Beispiel:          Man    löst 13,7 Teile     1-Aminobenzol-2-          carbonsäure    in 90 Teilen     10%iger    Salzsäure,  kühlt mit Eis auf     0,     und dianotiert     mit     einer Lösung von 7 Teilen     Natriumnitrit    in  30 Teilen Wasser.

   Diese     Diazolösung    gibt  man langsam zu einer eiskalten Lösung von  25,3 Teilen Diphenyl-4',4"-di-(3-methyl-5-         pyrazolon)-2',2"-disulfonsäure    in 150 Teilen  Wasser und 18 Teilen     Natriumcarbonat.    Nach  beendigter     Kupplung    wird der Farbstoff aus  gesalzen, filtriert und getrocknet.



  <B> Additional patent </B> to main patent no. 220751. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if 1 mole of diphenyl-4 ', 4 "-di- (3-methyl-5-pyrazolone) -2', 2" -disulfonic acid is mixed with 2 moles of diazo - Combined compound of 1-aminobenzene-2-carboxylic acid.



  The new dye is a yellow powder; his re-chrome-plated dyeings on wool show yellow tones with very good fastness properties.



       Example: 13.7 parts of 1-aminobenzene-2-carboxylic acid are dissolved in 90 parts of 10% strength hydrochloric acid, cooled to 0 with ice and dianotized with a solution of 7 parts of sodium nitrite in 30 parts of water.

   This diazo solution is slowly added to an ice-cold solution of 25.3 parts of diphenyl-4 ', 4 "-di- (3-methyl-5-pyrazolone) -2', 2" -disulfonic acid in 150 parts of water and 18 parts of sodium carbonate. After 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 der 1-Aminobenzol-2- carbonsäum vereinigt. Der neueFarbstoff stellt ein gelbesPulver dar; seine nachchromierten Färbungen auf Wolle weisen gelbe Töne von sehr guten Echtheitseigenschaften auf. 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 of 1-aminobenzene-2-carbonsäum combined. The new dye is a yellow powder; his re-chrome-plated dyeings on wool show yellow tones with very good fastness properties.
CH223710D 1941-03-29 1941-03-29 Process for the production of a new azo dye. CH223710A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH220751T 1941-03-29
CH223710T 1941-03-29

Publications (1)

Publication Number Publication Date
CH223710A true CH223710A (en) 1942-09-30

Family

ID=25726497

Family Applications (1)

Application Number Title Priority Date Filing Date
CH223710D CH223710A (en) 1941-03-29 1941-03-29 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH223710A (en)

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