CH175033A - Process for the preparation of a dye of the anthraquinone series. - Google Patents

Process for the preparation of a dye of the anthraquinone series.

Info

Publication number
CH175033A
CH175033A CH175033DA CH175033A CH 175033 A CH175033 A CH 175033A CH 175033D A CH175033D A CH 175033DA CH 175033 A CH175033 A CH 175033A
Authority
CH
Switzerland
Prior art keywords
dye
anthraquinone series
preparation
acetyl
amino
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
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
Publication of CH175033A publication Critical patent/CH175033A/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
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/26—Dyes with amino groups substituted by hydrocarbon radicals
    • C09B1/32—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups
    • C09B1/34—Dyes with amino groups substituted by hydrocarbon radicals substituted by aryl groups sulfonated

Description

  

  Verfahren zur Herstellung eines Farbstoffes der     Anthrachinonreihe.       Es wurde gefunden,     dass    man einen wert  vollen Farbstoff der     Anthrachinonreihe    er  hält, wenn man     1-Amino-2-acetyl-4-p-toluido-          anthrachinon    so lange mit einem sulfonierend       #virkenden    Mittel behandelt, bis eine ent  nommene Probe eben     wasserlöslieh    gewor  den ist.  



  Der erhaltene neue Farbstoff färbt die  tierische Faser aus saurem Bade in     blau-          ,-rünen    Tönen von guten Echtheitseigen  schaften.  



  <I>Beispiel:</I>  Man löst 7,4 Teile     1-Amino-2-acetyl-4-p-          toluidoanthrachinon    (erhältlich zum Beispiel  aus     1-Amino-2-acetyl-4-eliloranthrachinon     und     p-Tolui-din    und Spaltung des zunächst  entstandenen     Anils    mit Schwefelsäure bei  Zimmertemperatur) bei<B>0'</B> in 140 Teilen       Schwefelsäuremonohydrat    und gibt<B>65</B> Ge  wichtsteile rauchende Schwefelsäure, enthal  tend 23<B>% SO"</B> zu. Man rührt so lange bei  <B>0</B>     ',    bis eine entnommene und aufgearbeitete  Probe erkennen     lässt,        dass    das Reaktions  produkt eben völlig wasserlöslich geworden    ist.

   Die entstandene Verbindung wird sodann  durch vorsichtige Zugabe von Wasser ab  geschieden. Man filtriert, wäscht den Rück  stand mit verdünnter Schwefelsäure und löst  ihn in heissem Wasser. Man filtriert darauf  und versetzt das Filtrat so lange mit Koch  salz, bis eine Vermehrung der dabei ein  tretenden     Abselieidung    nicht mehr zu     be-          obaeliten    ist. Der erhaltene Niederschlag,  wird sodann in der üblichen Weise auf  gearbeitet.



  Process for the preparation of a dye of the anthraquinone series. It was found that a valuable dye of the anthraquinone series is obtained if 1-amino-2-acetyl-4-p-toluido-anthraquinone is treated with a sulfonating agent until a sample taken is just water-soluble that is.



  The new dye obtained dyes the animal fiber from acid bath in blue, green shades of good fastness properties.



  <I> Example: </I> 7.4 parts of 1-amino-2-acetyl-4-p-toluidoanthraquinone (obtainable, for example, from 1-amino-2-acetyl-4-eliloranthraquinone and p-toluidin) are dissolved and cleavage of the anile initially formed with sulfuric acid at room temperature) at <B> 0 '</B> in 140 parts of sulfuric acid monohydrate and gives <B> 65 </B> parts by weight of fuming sulfuric acid, containing 23 <B>% SO "< / B>. The mixture is stirred at <B> 0 </B> 'until a sample taken and processed shows that the reaction product has just become completely water-soluble.

   The resulting compound is then separated off by carefully adding water. It is filtered, the residue is washed with dilute sulfuric acid and dissolved in hot water. It is then filtered, and sodium chloride is added to the filtrate until an increase in the precipitation that occurs is no longer to be observed. The precipitate obtained is then worked up in the usual way.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Herstellung eines Farb stoffes der Anthrachinonreihe, dadurch ge kennzeichnet, dass man 1-Amino-2-acetyl-4- p-toluidoanthrachinon so lange mit einem sulfonierend wirkenden Mittel behandelt, bis eine entnommene Probe eben wasserlöslieli ist. Der erhaltene Farbstoff färbt die tie rische Faser aus saurem Bade in blaugrünen Tönen von guten Ealltheitseigenseliaften. <B> PATENT CLAIM: </B> Process for the production of a dye of the anthraquinone series, characterized in that 1-amino-2-acetyl-4-p-toluidoanthraquinone is treated with a sulfonating agent until a sample is removed just water-soluble. The dye obtained dyes the animal fiber from an acid bath in blue-green tones with good integrity properties.
CH175033D 1934-03-28 1934-03-28 Process for the preparation of a dye of the anthraquinone series. CH175033A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH175033T 1934-03-28

Publications (1)

Publication Number Publication Date
CH175033A true CH175033A (en) 1935-02-15

Family

ID=4425922

Family Applications (1)

Application Number Title Priority Date Filing Date
CH175033D CH175033A (en) 1934-03-28 1934-03-28 Process for the preparation of a dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH175033A (en)

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