CH187908A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH187908A
CH187908A CH187908DA CH187908A CH 187908 A CH187908 A CH 187908A CH 187908D A CH187908D A CH 187908DA CH 187908 A CH187908 A CH 187908A
Authority
CH
Switzerland
Prior art keywords
production
azo dye
new azo
new
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 CH187908A publication Critical patent/CH187908A/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
    • C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group
    • 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

Landscapes

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

Description

  

  Verfahren zur Herstellung eines neuen     Azofarbstoffes.       Es wurde gefunden, dass man einen neuen       Farbstoff    erhält, welcher der Formel  
EMI0001.0003     
    entspricht, wenn man     diazotiertes        4-Amino-          2.5-diäthoxy-3'-chlor-1.1'-azobenzol    mit     3-          Oxy-1.2-benzofluorenon    kuppelt.  



  Der neue Farbstoff bildet ein schwarzes  Pulver. Auf geeigneten Substraten, wie zum  Beispiel pflanzlichen Fasern hergestellt, färbt  er diese in echten schwarzen Tönen.  



       Beispiel:     31,9 Teile     4-Amino-2.5-diäthoxy-3'-chlor-          1.1'-azobenzol    werden wie üblich     diazotiert     und in eine Lösung von 24,6 Teilen des 3  Oxy-1.     2-benzofluorenons,    50 Teilen 30     o/oiger     Natronlauge, 30 Teilen Soda und 2000 Teilen  Wasser eingetragen. Der .gebildete     Farbstoff       fällt sofort aus. Der schwarze Niederschlag  wird filtriert und getrocknet.



  Process for the production of a new azo dye. It has been found that a new dye is obtained which has the formula
EMI0001.0003
    corresponds if one couples diazotized 4-amino-2.5-diethoxy-3'-chloro-1.1'-azobenzene with 3-oxy-1.2-benzofluorenone.



  The new dye forms a black powder. Produced on suitable substrates, such as vegetable fibers, he dyes them in real black tones.



       Example: 31.9 parts of 4-amino-2,5-diethoxy-3'-chloro-1,1'-azobenzene are diazotized as usual and in a solution of 24.6 parts of the 3 oxy-1. 2-benzofluorenone, 50 parts of 30% sodium hydroxide solution, 30 parts of soda and 2000 parts of water. The dye formed precipitates out immediately. The black precipitate is filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, welcher der Formel EMI0001.0017 entspricht, dadurch gekennzeichnet, dass man diazotiertes 4-Amino-2. 55-diäthoxy-3'-chlor- 1.1'-azobenzol mit 3-Oxy-1.2-benzofluorenon kuppelt. Der neue Farbstoff bildet ein schwarzes Pulver. Auf geeigneten Substraten, wie zum Beispiel pflanzlichen Fasern, hergestellt, färbt er diese in echten schwarzen Tönen. PATENT CLAIM: Process for the production of a new dye, which of the formula EMI0001.0017 corresponds, characterized in that diazotized 4-amino-2. 55-diethoxy-3'-chloro-1.1'-azobenzene couples with 3-oxy-1.2-benzofluorenone. The new dye forms a black powder. Produced on suitable substrates, such as vegetable fibers, he dyes them in real black tones.
CH187908D 1934-10-13 1934-10-13 Process for the production of a new azo dye. CH187908A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH187908T 1934-10-13
CH185145T 1934-10-13

Publications (1)

Publication Number Publication Date
CH187908A true CH187908A (en) 1936-11-30

Family

ID=25721144

Family Applications (1)

Application Number Title Priority Date Filing Date
CH187908D CH187908A (en) 1934-10-13 1934-10-13 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH187908A (en)

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