DE46375C - Process for the preparation of dyes from the diazo compounds of phenylene and toluene brown - Google Patents

Process for the preparation of dyes from the diazo compounds of phenylene and toluene brown

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Publication number
DE46375C
DE46375C DENDAT46375D DE46375DA DE46375C DE 46375 C DE46375 C DE 46375C DE NDAT46375 D DENDAT46375 D DE NDAT46375D DE 46375D A DE46375D A DE 46375DA DE 46375 C DE46375 C DE 46375C
Authority
DE
Germany
Prior art keywords
phenylene
dyes
preparation
diazo compounds
toluene
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.)
Active
Application number
DENDAT46375D
Other languages
German (de)
Original Assignee
Dr. H. KUPFERBERG in Manchester, Crumpsall 49, England
Publication of DE46375C publication Critical patent/DE46375C/en
Active legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B39/00Other azo dyes prepared by diazotising and coupling

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Color Printing (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

und Toluylenbrauns.and toluene brown.

Bekanntlich entstehen aus m-Phenylendiamin bezw. m-Toluylendiamin, salpetrigsaurem Natron und Salzsäure das Phenylen- bezw. Toluylenbraun. Diese Farbstoffe lassen sich nun in Diazoverbindungen überführen und letztere mit m-Phenylendiamin und m-Toluylendiamin vereinigen. Die so entstehenden neuen Azofarbstoffe färben Baumwolle mit und ohne Beize tiefbraun.As is known, arise from m-phenylenediamine respectively. m-Toluylenediamine, nitrous acid sodium and hydrochloric acid, the phenylene respectively. Toluene brown. These dyes can now be used in Transfer diazo compounds and combine the latter with m-phenylenediamine and m-tolylenediamine. The resulting new azo dyes dye cotton with and without stain a deep brown.

Beispiel: 10 kg reines Toluylenbraun werden in etwa 500 1 Wasser gelöst und nach Zusatz von 4,8 kg Salzsäure (200 B.) in der Kälte (50 C.) mit einer Lösung von 2,5 kg Nitrit versetzt. In diese Lösung der Diazoverbindung des Toluylenbrauns läfst man nach einiger Zeit eine stark abgekühlte Lösung von 4,4 kg Toluylendiamin einfliefsen. Der als dunkelbrauner Niederschlag ausfallende Farbstoff wird nach mehrstündigem Stehen durch Salzsäurezusatz in Lösung gebracht, mit Kochsalz gefällt, abfiltrirt, geprefst und getrocknet.Example: 10 kg of pure Toluylenbraun are dissolved in about 500 1 of water and (20 0 B.) was added after the addition of 4.8 kg of hydrochloric acid in the cold (5 0 C.) with a solution of 2.5 kg nitrite. After some time, a strongly cooled solution of 4.4 kg of toluene diamine is run into this solution of the diazo compound of toluene brown. After standing for several hours, the dye which separates out as a dark brown precipitate is brought into solution by adding hydrochloric acid, precipitated with common salt, filtered off, pressed and dried.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung von Farbstoffen durch Einwirkung der Diazoverbindungen des Phenylen- und Toluylenbrauns auf m-Phenylen- und m-Toluylendiamin.Process for the preparation of dyes by the action of the diazo compounds of Phenylene and toluene brown on m-phenylene and m-toluene diamine.
DENDAT46375D Process for the preparation of dyes from the diazo compounds of phenylene and toluene brown Active DE46375C (en)

Publications (1)

Publication Number Publication Date
DE46375C true DE46375C (en)

Family

ID=321487

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT46375D Active DE46375C (en) Process for the preparation of dyes from the diazo compounds of phenylene and toluene brown

Country Status (1)

Country Link
DE (1) DE46375C (en)

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