CH129479A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH129479A
CH129479A CH129479TA CH129479A CH 129479 A CH129479 A CH 129479A CH 129479T A CH129479T A CH 129479TA CH 129479 A CH129479 A CH 129479A
Authority
CH
Switzerland
Prior art keywords
production
dye
azo dye
new azo
naphthylamine
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 CH129479T priority Critical patent/CH129479A/en
Publication of CH129479A publication Critical patent/CH129479A/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. 127260.    Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Azofarbstoff    erhält, wenn man das     3-IyIethyl-          5-pyrazolon    mit dem     diazotierten    Farbstoff  aus     diazotiertem        a-Naphthylamin    und     a-Naph-          thylamin    kuppelt. Der neue     Farbstoff    stellt  ein schwarzes Pulver dar, welches sich mit  oranger Farbe in verschiedenen organischen  Lösungsmitteln löst.

   Er ist zum Färben von  Lacken sehr gut geeignet und färbt diese  Erzeugnisse in rotbraunen Tönen von vor  züglicher Lichtechtheit.  



  <I>Beispiel:</I>  Eine wie üblich hergestellte     Diazolösung     von 29,7 Teilen des Farbstoffes aus     diazo-          tiertem        a-Naphthylamin    und     a-Naphthylamin     wird in eine mit 30 Teilen kristallisiertem       Natriumacetat    versetzte Lösung von 10 Teilen         3-klethyl-55-pyrazolon    eingegossen. Der sofort  ausfallende Farbstoff wird alsdann     filtriert     und gegebenenfalls getrocknet.



      Additional patent to main patent no. 127260. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if the 3-ethyl-5-pyrazolone is coupled with the diazotized dye composed of diazotized a-naphthylamine and a-naphthylamine. The new dye is a black powder that dissolves in various organic solvents with an orange color.

   It is very suitable for coloring lacquers and colors these products in red-brown shades of excellent lightfastness.



  <I> Example: </I> A conventionally prepared diazo solution of 29.7 parts of the dye from diazo-tated a-naphthylamine and a-naphthylamine is mixed with 30 parts of crystallized sodium acetate solution of 10 parts of 3-klethyl-55 -pyrazolone poured. The dye which precipitates out immediately is then filtered and, if necessary, dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Azofarbstoffes, dadurch gekennzeichnet, dass man das 3-1Vlethyl-5-pyrazolon mit dem diazo- tierten Farbstoff aus diazotiertem a-Naphthyl- amin und a-Naphthylamin kuppelt. Der neue Farbstoff stellt ein schwarzes Pulver dar, welches sich mit oranger Farbe in verschie denen organischen Lösungsmitteln löst. Er ist zum Färben von Lacken sehr gut geeig net und färbt diese Erzeugnisse in rotbraunen Tönen von vorzüglicher Lichtechtheit. Claim: Process for the production of a new azo dye, characterized in that the 3-1Vlethyl-5-pyrazolone is coupled with the diazotized dye made from diazotized a-naphthylamine and a-naphthylamine. The new dye is a black powder that dissolves in various organic solvents with an orange color. It is very suitable for coloring lacquers and colors these products in red-brown shades of excellent lightfastness.
CH129479T 1926-12-24 1926-12-24 Process for the production of a new azo dye. CH129479A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH129479T CH129479A (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
CH129479T CH129479A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Publications (1)

Publication Number Publication Date
CH129479A true CH129479A (en) 1928-12-17

Family

ID=25710822

Family Applications (1)

Application Number Title Priority Date Filing Date
CH129479T CH129479A (en) 1926-12-24 1926-12-24 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH129479A (en)

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