CH111125A - Process for the preparation of a dye. - Google Patents

Process for the preparation of a dye.

Info

Publication number
CH111125A
CH111125A CH111125DA CH111125A CH 111125 A CH111125 A CH 111125A CH 111125D A CH111125D A CH 111125DA CH 111125 A CH111125 A CH 111125A
Authority
CH
Switzerland
Prior art keywords
yellow
dye
preparation
reaction product
naphthophenazine
Prior art date
Application number
Other languages
German (de)
Inventor
Anilin-Fabrikation Actien Fuer
Original Assignee
Anilin Fabrikation 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 Anilin Fabrikation Ag filed Critical Anilin Fabrikation Ag
Publication of CH111125A publication Critical patent/CH111125A/en

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
    • C09B17/00—Azine dyes
    • C09B17/04—Azine dyes of the naphthalene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines     Farbstoffes.       Es wurde gefunden,     d.ass    man einen wert  vollen Farbstoff erhält, wenn man     das    Re  aktionsprodukt, das bei der     Alkalischmelze     aus     1,2-Naphthophenazin-8-sulf        osäure    ent  steht, mit     chlorierend    wirkenden Mitteln be  handelt.  



  <I>Beispiel:</I>  5 Teile des aus     1,2-Naphthophenazin-8-          sulfosäure    in der     Alkalischmelze    erhältlichen  Reaktionsproduktes werden in 100 Teilen     Ni-          trobenzol    bei 50   gelöst. Hierzu lässt man  8 Teile     Sulfurylchl.orid    tropfen. Nach     Be-          endigung,der    Reaktion wird das Nitrobenzol  abgeblasen. Man erhält ein in gelben Na  deln kristallisierendes     Trichlorderivat,    das  sich in konzentrierter Schwefelsäure mit  blauer Farbe löst und sich oberhalb<B>250'</B>  zersetzt.

   Beim Erhitzen mit alkalischer     Hy-          drosulfitlösung    bildet es eine gelbe     Küpe,     aus der Baumwolle goldgelb angefärbt wird.  Die Färbungen nehmen beim Chloren einen    noch lebhafteren Ton an und sind sehr licht  echt.



  Process for the preparation of a dye. It has been found that a valuable dye is obtained if the reaction product, which is formed from 1,2-naphthophenazine-8-sulphonic acid in the alkali melt, is treated with chlorinating agents.



  <I> Example: </I> 5 parts of the reaction product obtainable from 1,2-naphthophenazine-8-sulfonic acid in the alkali melt are dissolved in 100 parts of nitrobenzene at 50%. 8 parts of sulfuryl chloride are added dropwise to this. When the reaction has ended, the nitrobenzene is blown off. A trichloro derivative which crystallizes in yellow needles is obtained, which dissolves in concentrated sulfuric acid with a blue color and decomposes above <B> 250 '</B>.

   When heated with an alkaline hydrosulphite solution, it forms a yellow vat from which cotton is dyed golden yellow. When chlorinated, the colors take on an even livelier tone and are very lightfast.

Claims (1)

PATENTANSPRUCF3 Verfahren zur Darstellung eines Farb stoffes, ,dadurch gekennzeichnet, dass man das aus 1,2-Naphthophenazin-8-sulfosäure in der Adkalischmelze erhältliche Reaktionsprodukt mit chlorierend wirkenden Mitteln behandelt. PATENT claim 3 Process for the preparation of a dye, characterized in that the reaction product obtainable from 1,2-naphthophenazine-8-sulfonic acid in the adkali melt is treated with chlorinating agents. Das Reaktionsprodukt kristallisiert in gelben Nadeln, löst sich in konzentrierter Schwefelsäure mit blauer Farbe und zersetzt sich oberhalb 250 ; beim Erhitzen mit ajIka- lischer Hydrosulfitlösung bildet es eine gelbe Küpe, aus der Baumwolle goldgelb an gefärbt wird; die Färbungen nehmen beim Chloren einen noch lebhafteren Ton an und sind sehr lichtecht. The reaction product crystallizes in yellow needles, dissolves in concentrated sulfuric acid with a blue color and decomposes above 250; When heated with ajical hydrosulphite solution it forms a yellow vat from which cotton is dyed golden yellow; the coloring takes on an even livelier tone when chlorinated and is very lightfast.
CH111125D 1924-07-31 1924-07-31 Process for the preparation of a dye. CH111125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH111125T 1924-07-31

Publications (1)

Publication Number Publication Date
CH111125A true CH111125A (en) 1925-08-01

Family

ID=4370178

Family Applications (1)

Application Number Title Priority Date Filing Date
CH111125D CH111125A (en) 1924-07-31 1924-07-31 Process for the preparation of a dye.

Country Status (1)

Country Link
CH (1) CH111125A (en)

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