CH150183A - Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series. - Google Patents

Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series.

Info

Publication number
CH150183A
CH150183A CH150183DA CH150183A CH 150183 A CH150183 A CH 150183A CH 150183D A CH150183D A CH 150183DA CH 150183 A CH150183 A CH 150183A
Authority
CH
Switzerland
Prior art keywords
pyrazole anthrone
benzanthrone
pyrazole
preparation
bromobenzanthrone
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 CH150183A publication Critical patent/CH150183A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur     Darstellane    eines     Küpenfarbstoffes    der     Benzanthronpyrazolanthronreihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Küpenfarb-          stoffes    der     Benzanthronpyrazolanthronreihe,     welches dadurch gekennzeichnet ist, dass man       Brombenzanthronpyrazolanthron,    wie es durch  Kondensation von     Pyrazolanthron    mit     Di-          brombenzanthron    vom Schmelzpunkt<B>256'</B>  und nachfolgende Kalischmelze     erhalten    wer  den kann,

   in Gegenwart eines Lösungsmittels  mit     Aminobenzanthronpyrazolanthron,    er  halten durch Kondensation von     Pyrazol-          anthron    mit nitriertem     Brombenzanthron,     Reduktion und nachfolgende     Kalischmelze,     durch Erhitzen zur Reaktion bringt.  



  <I>Beispiel:</I>  <B>10,5</B>     Teile        Brombenzanthronpyrazolanthron     (dargestellt, wie in dem Beispiel des Haupt-    patentes beschrieben), 9,3 Teile synthetische       Amino-Benzanthronpyrazolanthron    (erhalten  durch Kondensation von     Pyrazolanthron        inil     mononitriertem     Brombenzanthron,    Reduktion  und nachfolgende Kalischmelze), 10 Teile  trockenes     Natriumacetat    und 5     Gewichta-          teile    Kupferkarbonat werden in 350 Teilen  Nitrobenzol 16 Stunden lang bei Siede  temperatur verrührt.

   Nach der üblichen Auf  arbeitung erhält man eine blaugraue     Farb-          stoffpaste,    beziehungsweise ein schwarzes       Farbstoffpulver,    das sich in konzentrierter       Schwefelsäure        violettbraun    löst und Baum  wolle aus einer blauen     Küpe    ebenfalls in sehr       echten    graublauen Tönen anfärbt. Der Farb  stoff hat     vermutlich    die Formel:    
EMI0002.0001     




  Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series. The subject of this additional patent is a process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series, which is characterized in that bromobenzanthrone pyrazole anthrone, as obtained by condensation of pyrazole anthrone with dibromobenzanthrone of melting point 256, and subsequent potash melt who can

   in the presence of a solvent with aminobenzanthronpyrazolanthrone, he keeps by condensation of pyrazolanthrone with nitrated bromobenzanthrone, reduction and subsequent potash melt, brings to reaction by heating.



  <I> Example: </I> <B> 10.5 </B> parts of bromobenzanthrone pyrazole anthrone (shown as described in the example of the main patent), 9.3 parts of synthetic amino benzanthrone pyrazole anthrone (obtained by condensation of pyrazole anthrone inil mononitrated bromobenzanthrone, reduction and subsequent potash melt), 10 parts of dry sodium acetate and 5 parts by weight of copper carbonate are stirred in 350 parts of nitrobenzene for 16 hours at boiling temperature.

   The usual work-up gives a blue-gray dye paste or a black dye powder which dissolves in concentrated sulfuric acid to a violet-brown color and which also dyes cotton from a blue vat in very genuine gray-blue tones. The dye probably has the formula:
EMI0002.0001

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes der Benzanthronpyrazolanthron- reihe, dadurch gekennzeichnet, dass man Brombenzanthronpyrazolanthron, wie es durch Kondensation von Pyrazolanthron mit Di- brombenzanthron vom Schmelzpunkt 256 und nachfolgende Kalischmelze erhalten wer den kann, PATENT CLAIM: Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series, characterized in that bromobenzanthrone pyrazole anthrone, as can be obtained by condensation of pyrazole anthrone with dibromobenzanthrone of melting point 256 and subsequent potassium melt in Gegenwart eines Lösungsmittel mit Aminobenzanthronpyrazolanthron. er halten durch Kondensation von Pyrazol- anthron mit mononitriertemBrombenzanthron Reduktion und nachfolgende Kalischmelze, durch Erhitzen zur Reaktion bringt. Das er haltene Produkt ist ein schwarzes Farbstoff pulver, das sich in konzentrierter Scheefel- säure violettbraun löst und Baumwolle aus einer blauen Küpe ebenfalls in sehr echten graublauen Tönen anfärbt. <B>UNTERANSPRÜCHE:</B> 1. in the presence of a solvent with aminobenzanthronpyrazolanthrone. it is held by condensation of pyrazole anthrone with mononitrated bromobenzanthrone reduction and subsequent potassium melt, which is caused to react by heating. The product obtained is a black dye powder that dissolves in concentrated sheefelic acid to a violet-brown color and also dyes cotton from a blue vat in very genuine gray-blue tones. <B> SUBClaims: </B> 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Nitrobenzol als Lösungsmittel verwendet. 2. Verfahren nach Patentanspruch, dadureh gekennzeichnet, dass man die Reaktion in Gegenwart .eines säurebindenden Mittel;: ausführt. 3. Verfahren nach Patentanspruch, dadurch gekennzeiehnet, dass man dem Reaktions gemisch einen Katalysator zusetzt. Process according to patent claim, characterized in that nitrobenzene is used as the solvent. 2. The method according to claim, characterized in that the reaction is carried out in the presence of an acid-binding agent. 3. The method according to claim, characterized in that a catalyst is added to the reaction mixture.
CH150183D 1928-12-01 1929-11-23 Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series. CH150183A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE150183X 1928-12-01
CH146858T 1929-11-23

Publications (1)

Publication Number Publication Date
CH150183A true CH150183A (en) 1931-10-15

Family

ID=25714940

Family Applications (1)

Application Number Title Priority Date Filing Date
CH150183D CH150183A (en) 1928-12-01 1929-11-23 Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series.

Country Status (1)

Country Link
CH (1) CH150183A (en)

Similar Documents

Publication Publication Date Title
CH150183A (en) Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series.
DE546228C (en) Process for the production of nitrogen-containing Kuepen dyes
AT132375B (en) Process for the preparation of vat dyes of the perylene series.
DE548616C (en) Process for the preparation of Kuepen dyes of the 1íñ2íñ2&#39;íñ1&#39;-anthraquinonazine series
AT55039B (en) Process for the preparation of vat dyes.
DE513046C (en) Process for the preparation of Kuepen dyes of the 1,2-benzanthraquinone series
DE491429C (en) Process for the preparation of Kuepen dyes
DE526973C (en) Process for the preparation of Kuepen dyes
DE498063C (en) Process for the preparation of brown Kuepen dyes of the benzanthrone series
CH188225A (en) Process for the production of a vat dye of the anthraquinone series.
DE517441C (en) Process for the preparation of Kuepen dyes of the anthraquinone series
DE491427C (en) Process for the production of Kuepen dyes of the pyrazolanthrone series
CH150186A (en) Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series.
CH122071A (en) Process for the preparation of a nitrogenous vat dye.
CH150184A (en) Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series.
CH214180A (en) Process for the production of a vat dye.
CH149908A (en) Process for the preparation of a vat dye.
CH242509A (en) Process for the production of a vat dye.
CH178964A (en) Process for the preparation of a dye of the pyrene series.
DES0033864MA (en)
CH145046A (en) Process for the preparation of a vat dye of the anthraquinone series.
CH149910A (en) Process for the preparation of a vat dye.
CH129191A (en) Process for the preparation of dichloroisodibenzanthrone.
CH188226A (en) Process for the production of a vat dye of the anthraquinone series.
CH149913A (en) Process for the preparation of a vat dye.