DE224590C - - Google Patents

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Publication number
DE224590C
DE224590C DENDAT224590D DE224590DA DE224590C DE 224590 C DE224590 C DE 224590C DE NDAT224590 D DENDAT224590 D DE NDAT224590D DE 224590D A DE224590D A DE 224590DA DE 224590 C DE224590 C DE 224590C
Authority
DE
Germany
Prior art keywords
nitrosophenols
sulfine
carbazole
condensation
bodies
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
DENDAT224590D
Other languages
German (de)
Publication of DE224590C publication Critical patent/DE224590C/de
Active 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
    • C09B49/00—Sulfur dyes
    • C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Description

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung blauer Küpenfarbstoffe der Sulfinreihe aus den durch Kondensation von Nitrosophenolen und Carbazol in Gegenwart von konzentrierter Schwefelsäure erhältlichen Produkten oder ihren Leukoverbindungen, darin bestehend, daß man die beim Erhitzen dieser Körper mit Alkalipolysulfiden nach den üblichen Methoden gewonnenen Rohschmelzen zur Entfernung der in verdünnten Schwefelalkalien leicht löslichen Anteile mit Schwefelnatriumlösung extrahiert.Process for the preparation of blue vat dyes of the sulfine series from the through Condensation of nitrosophenols and carbazole in the presence of concentrated sulfuric acid or products their leuco compounds, consisting in the fact that they are produced when these bodies are heated with alkali polysulphides obtained by the usual methods for crude melts Removal of the easily soluble parts in dilute alkaline sulfur with sodium sulphide solution extracted.
DENDAT224590D Active DE224590C (en)

Publications (1)

Publication Number Publication Date
DE224590C true DE224590C (en)

Family

ID=485311

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT224590D Active DE224590C (en)

Country Status (1)

Country Link
DE (1) DE224590C (en)

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