DE216891C - - Google Patents

Info

Publication number
DE216891C
DE216891C DENDAT216891D DE216891DC DE216891C DE 216891 C DE216891 C DE 216891C DE NDAT216891 D DENDAT216891 D DE NDAT216891D DE 216891D C DE216891D C DE 216891DC DE 216891 C DE216891 C DE 216891C
Authority
DE
Germany
Prior art keywords
blue
expediently
mild
treated
preparation
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
DENDAT216891D
Other languages
German (de)
Publication of DE216891C publication Critical patent/DE216891C/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
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/24—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic rings being only condensed with an anthraquinone nucleus in 1-2 or 2-3 position
    • C09B5/44—Azines of the anthracene series
    • C09B5/46—Para-diazines
    • C09B5/48—Bis-anthraquinonediazines (indanthrone)
    • C09B5/56—Preparation from starting materials already containing the indanthrene nucleus

Description

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

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung eines blauen Farbstoffs der Anthracenreihe, darin bestehend, daß man Indanthrenblau mit milde sulfierenden Mitteln, zweckmäßig in Gegenwart von Borsäure, behandelt.Process for the preparation of a blue dye of the anthracene series, consisting therein that indanthrene blue is treated with mild sulphurizing agents, expediently in the presence of boric acid.
DENDAT216891D Active DE216891C (en)

Publications (1)

Publication Number Publication Date
DE216891C true DE216891C (en)

Family

ID=478251

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT216891D Active DE216891C (en)

Country Status (1)

Country Link
DE (1) DE216891C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700420A1 (en) * 1993-05-21 1996-03-13 Russian Technology Group Thermostable and lightfast dichroic light polarizers
US6962734B2 (en) 2002-06-07 2005-11-08 Nitto Denko Corporation Sulfoderivatives of indanthrone, lyotropic liquid crystal system and anisotropic film on their base

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0700420A1 (en) * 1993-05-21 1996-03-13 Russian Technology Group Thermostable and lightfast dichroic light polarizers
EP0700420A4 (en) * 1993-05-21 1997-05-28 Russian Technology Group Thermostable and lightfast dichroic light polarizers
US6962734B2 (en) 2002-06-07 2005-11-08 Nitto Denko Corporation Sulfoderivatives of indanthrone, lyotropic liquid crystal system and anisotropic film on their base

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