CH129475A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH129475A
CH129475A CH129475TA CH129475A CH 129475 A CH129475 A CH 129475A CH 129475T A CH129475T A CH 129475TA CH 129475 A CH129475 A CH 129475A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
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
Priority to CH129475T priority Critical patent/CH129475A/en
Publication of CH129475A publication Critical patent/CH129475A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/02—Disazo dyes
    • C09B31/12—Disazo dyes from other coupling components "C"
    • C09B31/14—Heterocyclic components
    • C09B31/143—1,2-Diazoles
    • C09B31/147—Pyrazoles

Landscapes

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

Description

  

      Zusatzpatent    zum Hauptpatent Nr.<B>127260.</B>    Verfahren zur Herstellung eines     netten        Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff        erhält,    wenn man das     3-1VTetliyl-          5-pyrazolon    mit     diazotiertem        4-Aminoazo-          ben7ol    kuppelt. Der neue Farbstoff stellt  ein braunes Pulver dar, welches sich mit  rotbrauner Farbe in verschiedenen     ormaiii-          #ehen    Lösungsmitteln löst.

   Er ist zum Fär  ben von     Acetatseide    und Lacken sehr gut       geeignet    und färbt diese Erzeugnisse in  orangen Tönen von vorzüglicher     Lichteeht-          h        eit.     



  <I>Beispiel</I>  Eine wie üblich hergestellte     Diazolösung     von 19.7 Teilen     4-Aminoazobenzol    wird in  eine mit 30 Teilen kristallisiertem Natrium  acetat versetzte Lösung von 10 Teilen     3-          Iethy1-5-pyrazolon    eingegossen: Der sofort    ausfallende Farbstoff wird alsdann filtriert  und gegebenenfalls getrocknet.



      Additional patent to main patent no. <B> 127260. </B> Process for the production of a nice azo dye. It has been found that a new azo dye is obtained if the 3-1V-tetliyl-5-pyrazolone is coupled with diazotized 4-aminoazobenzene. The new dye is a brown powder that dissolves with a red-brown color in various organic solvents.

   It is very suitable for dyeing acetate silk and lacquers and dyes these products in orange tones with excellent lightness.



  <I> Example </I> A conventionally prepared diazo solution of 19.7 parts of 4-aminoazobenzene is poured into a solution of 10 parts of 3-ethy1-5-pyrazolone mixed with 30 parts of crystallized sodium acetate: The dye which precipitates immediately is then filtered and optionally dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man das 3-Methyl-5-pyrazolon mit diazotier- tem 4-Aminoazobenzol kuppelt. Der neue Farbstoff stellt ein braunes Pulver dar, wel ches sich mit rotbrauner Farbe in verschie denen organischen Lösungsmitteln löst. PATENT CLAIM Process for the production of a new azo dye, characterized in that the 3-methyl-5-pyrazolone is coupled with diazotized 4-aminoazobenzene. The new dye is a brown powder which dissolves in various organic solvents with a red-brown color. Er ist zum Färben von Acetatseide und Lacken sehr gut geeignet und färbt diese Erzeug- nisse in orangen Tönen von vorzüglicher Lichtechtheit. It is very suitable for dyeing acetate silk and lacquers and dyes these products in orange tones with excellent lightfastness.
CH129475T 1926-12-24 1926-12-24 Process for the production of a new azo dye. CH129475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH129475T CH129475A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH127260T 1926-12-24
CH129475T CH129475A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Publications (1)

Publication Number Publication Date
CH129475A true CH129475A (en) 1928-12-17

Family

ID=25710818

Family Applications (1)

Application Number Title Priority Date Filing Date
CH129475T CH129475A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH129475A (en)

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