DE848679C - Process for the production of Kuepen dyes - Google Patents

Process for the production of Kuepen dyes

Info

Publication number
DE848679C
DE848679C DED5266A DED0005266A DE848679C DE 848679 C DE848679 C DE 848679C DE D5266 A DED5266 A DE D5266A DE D0005266 A DED0005266 A DE D0005266A DE 848679 C DE848679 C DE 848679C
Authority
DE
Germany
Prior art keywords
production
aluminum chloride
dyes
vat dyes
kuepen dyes
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DED5266A
Other languages
German (de)
Inventor
Rudolf Dr Mueller
Heinrich Dr Ritter
Eberhard Dr Stier
Werner Dr Zerweck
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cassella Farbwerke Mainkur AG
Original Assignee
Cassella Farbwerke Mainkur AG
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 Cassella Farbwerke Mainkur AG filed Critical Cassella Farbwerke Mainkur AG
Priority to DED5266A priority Critical patent/DE848679C/en
Application granted granted Critical
Publication of DE848679C publication Critical patent/DE848679C/en
Expired legal-status Critical Current

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
    • C09B17/00—Azine dyes

Landscapes

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

Description

Verfahren zur Herstellung von Küpenfarbstoffen Gegenstand des Patents 819 887 ist ein Verfahren zur Herstellung von Küpenfarbstoffen, dadurch gekennzeichnet, daß man die nach der Patentschrift 368 172 aus Nallhthsultäm-3, 4-phenazin und 2-Chlor-1, 4-cllinoiien bz-%v. aus den Halogen, Alkoxy oder ähnliche Substituenten enthaltenden, Derivaten dieser Komponenten erhaltenen Küpenfarbstoffe der Einwirkung von Brom in Gegenwart eines Lösungsmittels, gegebenenfalls im geschlossenen Gefäß, bei Temperaturen oberhalb ioo° unterwirft.Process for the production of vat dyes The subject of patent 819 887 is a process for the production of vat dyes, characterized in that the according to patent 368 172 from Nallhthsultäm-3, 4-phenazine and 2-chloro-1, 4-cllinoiien bz-% v. vat dyes obtained from the derivatives of these components containing halogen, alkoxy or similar substituents are subjected to the action of bromine in the presence of a solvent, optionally in a closed vessel, at temperatures above 100 °.

Es wurde nun gefunden, daß sich diese Reaktion mit besonderem Vorteil in Gegenwart von. Aluminiiuinchlorid und einem gegenüber Aluminiumchlorid inerten Lösungsmittel durchführen läßt. Die Reaktion läßt sich dabei leicht im offenen Gefäß durchführen. Die erhaltenen Farbstoffe sind mit den nach dem Verfahren des obigen Patents erhaltenen Farbstoffen identisch. Beispiel In i 5o Teilen Nitrobenzol werden 7,5 Teile Aluminiumcillorid gelöst. In diese Lösung werden i i Teile des nach Beispiel i der Patentschrift 368 172 erhaltenen Farbstoffes eingetragen, wobei der Farbstoff in Lösung geht. Dann werden 5,5 Teile Brom zugefügt. Das Ganze wird unter Rühren auf i io° geheizt. Dann wird die Temperatur im Laufe mehrerer Stunden auf 13o° gesteigert. Nach Beendigung der Reaktion, während welcher Bromwasserstoff entweicht, wird das Lösungsmittel mit Wasserdampf entfernt. Der so erhaltene Farbstoff entspricht in seinen Eigenschaften dem in Beispiel i des Patents 819887 beschriebenen.It has now been found that this reaction is particularly advantageous in the presence of. Aluminum chloride and a solvent inert to aluminum chloride can be carried out. The reaction can easily be carried out in an open vessel. The dyes obtained are identical to the dyes obtained by the method of the above patent. EXAMPLE 7.5 parts of aluminum chloride are dissolved in 150 parts of nitrobenzene. Parts of the dye obtained according to Example i of Patent 368 172 are introduced into this solution, the dye dissolving. Then 5.5 parts of bromine are added. The whole is heated to 10 ° with stirring. Then the temperature is increased to 130 ° over the course of several hours. When the reaction has ended, during which hydrogen bromide escapes, the solvent is removed with steam. The properties of the dye thus obtained correspond to those described in example i of patent 819887.

Mit gleichem Erfolg läBt sich Nitrobenzol durch Trichlorbenzol ersetzen.Nitrobenzene can be replaced by trichlorobenzene with equal success.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Küpenifarbstoffen, dadurch gekennzeichnet, daß man die nach der Patentschrift 368 172 aus Naphthsultam-3, 4-phenazin und 2-Chlor-i, 4-chinonen bzw. aus den Halogen, Alkoxy oder ähnliche Substituenten enthaltenden Derivaten dieser Komponenten erhaltenen Küpenfarbstoffe der Einwirkung von Brom in Gegenwart von Aluminiumchlorid und einem gegen Aluminiumchlorid inerten Lösungsmittel bei Temperaturen oberhalb ioo° unterwirft. PATENT CLAIM: Process for the production of vat dyes, characterized in that according to Patent 368 172 from naphthsultam-3, 4-phenazine and 2-chloro-i, 4-quinones or from the halogen, alkoxy or similar substituents containing derivatives of these Components obtained vat dyes subjected to the action of bromine in the presence of aluminum chloride and a solvent inert to aluminum chloride at temperatures above 100 °.
DED5266A 1950-08-17 1950-08-17 Process for the production of Kuepen dyes Expired DE848679C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED5266A DE848679C (en) 1950-08-17 1950-08-17 Process for the production of Kuepen dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED5266A DE848679C (en) 1950-08-17 1950-08-17 Process for the production of Kuepen dyes

Publications (1)

Publication Number Publication Date
DE848679C true DE848679C (en) 1952-11-10

Family

ID=7031344

Family Applications (1)

Application Number Title Priority Date Filing Date
DED5266A Expired DE848679C (en) 1950-08-17 1950-08-17 Process for the production of Kuepen dyes

Country Status (1)

Country Link
DE (1) DE848679C (en)

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