DE268891C - - Google Patents

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Publication number
DE268891C
DE268891C DENDAT268891D DE268891DA DE268891C DE 268891 C DE268891 C DE 268891C DE NDAT268891 D DENDAT268891 D DE NDAT268891D DE 268891D A DE268891D A DE 268891DA DE 268891 C DE268891 C DE 268891C
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DE
Germany
Prior art keywords
dyes
sulfur
sulfhydrates
sulfuric acid
particular alkali
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.)
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Application number
DENDAT268891D
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German (de)
Publication of DE268891C publication Critical patent/DE268891C/de
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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
    • C09B49/00Sulfur dyes
    • C09B49/10Sulfur 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

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

PATENTSCHRIFTPATENT LETTERING

- JVl 268891 -KLASSE lld. GRUPPE - JVl 268891 - CLASS lld. GROUP

FARBWERKE vorm. MEISTER LUCIUS & BRÜNING in HÖCHST a. M.FARBWERKE vorm. MASTER LUCIUS & BRÜNING in HÖCHST a. M.

Verfahren zur Herstellung in Schwefelnatrium löslicher Farbstoffe.Process for the preparation of dyes soluble in sodium sulphide.

Zusatz zum Patent 264044.Addendum to patent 264044.

Patentiert im Deutschen Reiche vom 14. Januar 1912 ab. Längste Dauer: 13.Januar 1927.Patented in the German Empire on January 14, 1912. Longest duration: January 13, 1927.

In dem Patent 264044, Kl. 22 d, wurde gezeigt, daß man die Farbstoffe der Patentschriften 222640, 224590 und 224591, Kl. 22 d, insbesondere aus den Indophenolen, welche sich von Alkyl- oder Arylcarbazolen ableiten, mittels Schwefelsäure in Farbstoffe, welche sich in Schwefelnatrium leicht färben lassen, umwandeln kann.In the patent 264044, cl. 22 d, it was shown that the dyes of the patents 222640, 224590 and 224591, class 22 d, in particular from the indophenols, which are derived from alkyl or aryl carbazoles, by means of sulfuric acid in dyes, which can be easily colored in sodium sulphide, can be transformed.

Es wurde nun weiter gefunden, daß man auch durch Behandlung mittels Schwefelalkalien, insbesondere Alkalisulfhydrate, eine Umwandlung erzielt.It has now been found that treatment with alkaline sulfur, in particular alkali sulfhydrates, achieved a conversion.

Beispiel.Example.

40 Teile Farbstoff, erhalten durch Verschwefeln des Indophenols aus einem Alkylcarbazol, z. B. Äthylcarbazol und Nitrosophenol, werden in Form einer Paste mit Teilen Kaliumsulfhydrat, gelöst in 600 Teilen Wasser, längere Zeit gekocht; das Reaktionsprodukt wird dann mit Säure gefällt.40 parts of dye, obtained by sulphurizing the indophenol from an alkyl carbazole, z. B. ethyl carbazole and nitrosophenol are in the form of a paste with parts of potassium sulfhydrate dissolved in 600 parts Water, boiled for a long time; the reaction product is then precipitated with acid.

Claims (1)

Patent-Anspruch:Patent claim: Abänderung des durch Patent 264044 geschützten Verfahrens zur Herstellung in Schwefelnatrium löslicher Farbstoffe, darin bestehend, daß man anstatt die dort genannten Ausgangsfarbstoffe mit Schwefelsäure umzuwandeln, diese mit Schwefelalkalien, insbesondere Alkalisulfhydraten, behandelt.Modification of the manufacturing process protected by patent 264044 in Sodium sulfur soluble dyes, consisting in the fact that one instead of the ones mentioned there To convert starting dyes with sulfuric acid, these with sulfur alkalis, in particular alkali sulfhydrates, treated.
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Publications (1)

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Country Status (1)

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