CH148365A - Process for the production of a new metal-containing dye. - Google Patents

Process for the production of a new metal-containing dye.

Info

Publication number
CH148365A
CH148365A CH148365DA CH148365A CH 148365 A CH148365 A CH 148365A CH 148365D A CH148365D A CH 148365DA CH 148365 A CH148365 A CH 148365A
Authority
CH
Switzerland
Prior art keywords
chromium
dye
containing dye
production
dissolves
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 CH148365A publication Critical patent/CH148365A/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
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Description

  

  Verfahren zur Herstellung eines neuen metallhaltigen     Farbstoffes.       Es wurde gefunden, dass man einen neuen  chromhaltigen Farbstoff erhält, wenn man  den     Azofarbstoff    aus     diazotiertern        4,6-Dinitro-          2-arnirro-l-phenol    und     fl-Naphthylamin    in  Gegenwart von     Pyridin    mit chromabgebenden  Mitteln behandelt.  



  Der erhaltene chromhaltige     Farbstoff    stellt  ein grünschwarzes Pulver dar, das sich in  Wasser oder Natronlauge sehr schwer und  in konzentrierter Schwefelsäure mit violetter  Farbe löst. Aus der gelbgrünen Lösung des  Farbstoffes in     Acetylcelluloselack    erhält man  auf     Metallfolien        olivegrüne    Überzüge.  



  <I>Beispiel:</I>  3,53 Gewichtsteile des Farbstoffes aus       diazotiertem        4,6-Dinitro-2-amino-l-phenol    und       ss-Naphthylamin    werden in 100 Teilen     Pyri-          din    mit einer 1,14 Teilen     Cr20s    entsprechen  den Menge von ameisensaurem Chrom wäh  rend mehreren     Stunden    am     Rückflusskühler     zum Sieden erhitzt. Nach Beendigung der       Chromierung    wird vom Ungelösten filtriert,  das     Pyridin    im Vakuum     abdestilliert    und  der Rückstand getrocknet.

      Als chromabgebende Mittel können statt       Chromformiat    andere, wie zum Beispiel Chrom  acetat, verwendet werden; die     Chromierung     kann ferner in Gegenwart geeigneter Zusätze,  wie zum Beispiel der     Alkalisalze    organischer       Säuren,    durchgeführt werden.



  Process for the production of a new metal-containing dye. It has been found that a new chromium-containing dye is obtained if the azo dye from diazotized 4,6-dinitro-2-aminirro-1-phenol and fl-naphthylamine is treated with chromium donating agents in the presence of pyridine.



  The chromium-containing dye obtained is a greenish-black powder that dissolves very difficultly in water or sodium hydroxide solution and dissolves in concentrated sulfuric acid with a violet color. From the yellow-green solution of the dye in acetyl cellulose lacquer, olive-green coatings are obtained on metal foils.



  <I> Example: </I> 3.53 parts by weight of the dye from diazotized 4,6-dinitro-2-amino-1-phenol and β-naphthylamine in 100 parts of pyridine with 1.14 parts of Cr20s correspond to the Amount of formic chromium heated to boiling for several hours on the reflux condenser. After the chromation has ended, the undissolved material is filtered off, the pyridine is distilled off in vacuo and the residue is dried.

      Instead of chromium formate, other chromium donating agents, such as chromium acetate, can be used; the chromating can also be carried out in the presence of suitable additives, such as, for example, the alkali metal salts of organic acids.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen chromhaltigen Farbstoffes, dadurch gekenn zeichnet, dass man den Azofarbstoff aus dia- zotiertem 4,6-Dinitro-2-amino-l-pherrol und f-Naphthylamin in Gegenwart von Pyridin mit chromabgebenden Mitteln behandelt. Der erhaltene chromhaltige Farbstoff stellt ein grünschwarzes Pulver dar, das sich in Wasser oder Natronlauge sehr schwer und in konzentrierter Schwefelsäure rnit violetter Farbe löst. PATENT CLAIM: Process for the production of a new chromium-containing dye, characterized in that the azo dye composed of diazotized 4,6-dinitro-2-amino-1-pherrole and f-naphthylamine is treated in the presence of pyridine with chromium donating agents. The chromium-containing dye obtained is a greenish-black powder which dissolves very difficultly in water or sodium hydroxide solution and dissolves violet in color in concentrated sulfuric acid. Aus der gelbgrünen Lösung des Farbstoffes in Acetylcelluloselaek erhält man auf Al_etallfolien olivegrüne Überzüge. From the yellow-green solution of the dye in acetylcelluloselaek, olive-green coatings are obtained on aluminum metal foils.
CH148365D 1929-06-08 1929-06-08 Process for the production of a new metal-containing dye. CH148365A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH145447T 1929-06-08
CH148365T 1929-06-08

Publications (1)

Publication Number Publication Date
CH148365A true CH148365A (en) 1931-07-15

Family

ID=25714695

Family Applications (1)

Application Number Title Priority Date Filing Date
CH148365D CH148365A (en) 1929-06-08 1929-06-08 Process for the production of a new metal-containing dye.

Country Status (1)

Country Link
CH (1) CH148365A (en)

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