DE445844C - Process for the preparation of benzanthrone derivatives - Google Patents

Process for the preparation of benzanthrone derivatives

Info

Publication number
DE445844C
DE445844C DEF59227D DEF0059227D DE445844C DE 445844 C DE445844 C DE 445844C DE F59227 D DEF59227 D DE F59227D DE F0059227 D DEF0059227 D DE F0059227D DE 445844 C DE445844 C DE 445844C
Authority
DE
Germany
Prior art keywords
preparation
benzanthrone derivatives
benzanthrone
derivatives
solution
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
DEF59227D
Other languages
German (de)
Inventor
Dr Wilhelm Eckert
Dr Karl Zahn
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEF59227D priority Critical patent/DE445844C/en
Application granted granted Critical
Publication of DE445844C publication Critical patent/DE445844C/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/02—Benzathrones
    • C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus
    • C09B3/10—Amino derivatives

Landscapes

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

Description

Verfahren zur Darstellung von Benzanthronderivaten. Es wurde gefunden, daß man zuwertvollenAbkömmlingen der Benzanthronreihe gelangt,wenn man Nitrobenzanthrone mit Alkalisulfiten behandelt. Die neuen Verbindungen sind wasserlöslich und stellen wahrscheinlich Sulfosäuren von Aminobenzanthronen dar, welche bisher auf andere Weise nicht bekannt geworden sind. Sie sind an sich schon Farbstoffe und geben z. B. auf Wolle, Seide, Acetatseide leuchtendröte Färbungen; sie sind aber auch besonders wertvoll als Ausgangsmaterialien für die Darstellung von Farbstoffen.Process for the preparation of benzanthrone derivatives. It was found, that one arrives at valuable descendants of the benzanthrone series if one uses nitrobenzanthrones treated with alkali sulfites. The new compounds are water soluble and make probably sulfonic acids of aminobenzanthrones, which so far on others Way have not become known. They are already dyes in themselves and give z. B. on wool, silk, acetate silk bright red dyeings; but they are also special valuable as starting materials for the representation of dyes.

Beispiel. zoo Teile Nitrobenzanthron, dargestellt nach Beispiel z des B. Zusatzes 6435 zum französischen Patent 349 531, werden in fein verteilter Form, zweckmäßig als Paste, mit zooo Teilen technischer Natriumbisulfitlösung so lange am Rückflußkühler gekocht, bis alles oder fast alles umgesetzt ist. Nach dem Verdünnen mit heißem Wasser trennt man von unangegriffenem Ausgangsmaterial durch Filtrieren. Die Lösung wird alsdann angesäuert, die schweflige Säure durch kurzes Kochen vertrieben und das Reaktionsprodukt durch Zugäbe von Kochsalz zur Abscheidung gebracht. Es stellt getrocknet ein dunkelrotes Pulver dar, welches sich in heißem Wasser leicht mit roter Farbe auflöst. Die Lösungsfarbe in konzentrierter Schwefelsäure ist bräunlichgelb mit schwacher Fluoreszenz. In saurer Lösung wird Wolle in leuchtendroten Tönen angefärbt.Example. zoo parts of nitrobenzanthrone, represented by the example of addendum 6435 to French patent 349 531, are finely divided, expediently as a paste, boiled with zooo parts of technical sodium bisulfite solution on a reflux condenser until all or almost everything has been converted. After dilution with hot water, the unaffected starting material is separated off by filtration. The solution is then acidified, the sulphurous acid expelled by brief boiling and the reaction product is made to separate out by adding common salt. When dried, it is a dark red powder that easily dissolves in hot water with a red color. The solution color in concentrated sulfuric acid is brownish yellow with weak fluorescence. In an acidic solution, wool is dyed in bright red tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Benzanthronderivaten, darin bestehend, daß man Nitrobenzanthrone mit Alkalisulfiten behandelt. PATENT CLAIM: Process for the preparation of benzanthrone derivatives, consisting in treating nitrobenzanthrones with alkali sulfites.
DEF59227D 1925-06-28 1925-06-28 Process for the preparation of benzanthrone derivatives Expired DE445844C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF59227D DE445844C (en) 1925-06-28 1925-06-28 Process for the preparation of benzanthrone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF59227D DE445844C (en) 1925-06-28 1925-06-28 Process for the preparation of benzanthrone derivatives

Publications (1)

Publication Number Publication Date
DE445844C true DE445844C (en) 1927-06-18

Family

ID=7108760

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF59227D Expired DE445844C (en) 1925-06-28 1925-06-28 Process for the preparation of benzanthrone derivatives

Country Status (1)

Country Link
DE (1) DE445844C (en)

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