CH150191A - 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.

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Publication number
CH150191A
CH150191A CH150191DA CH150191A CH 150191 A CH150191 A CH 150191A CH 150191D A CH150191D A CH 150191DA CH 150191 A CH150191 A CH 150191A
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CH
Switzerland
Prior art keywords
benzanthrone
preparation
pyrazole anthrone
pyrazole
vat dye
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 CH150191A publication Critical patent/CH150191A/en

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Description

  

  Verfahren zur Darstellung eines     Näponfarbstoffes    der     Benzantbronpyrazolaiitlironreihe       Gegenstand dieses Zusatzpatentes in ein  Verfahren zur Darstellung eines     Küpenfarb-          stoffes    der     Benzanthronpyrazolanthronreihe,     welches dadurch gekennzeichnet ist,     dass    man       Chlor-benzanthronpyrazolanthron,    das durch  Einwirkung von Chlor auf     Benzanthronpyr-          azolanthron    in Nitrobenzol bei<B>135</B> bis  145<B>' C</B> erhalten werden kann,

   in Gegen  wart eines Lösungsmittels mit     Dimethyl-          amin    durch Erhitzen zur Umsetzung bringt.    <I>Beispiel:</I>    <B>10</B> Teile     Chor-benzanthronpyrazolantliron     (erhalten durch Einwirkung von Chlor auf       Benzanthronpyrazolanthron    in Nitrobenzol  bei<B>135</B> bis 145<B>' C,</B> grün löslich in kon  zentrierter Schwefelsäure, Chlorgehalt zirka  <B>16%)</B> werden mit<B>30</B> Teilen 46%iger  alkoholischer     Dimethylaminlösung    unter Zu  gabe einer geringen Menge     Kupferchlorür     24 Stunden lang in geschlossenem Ge  <B>fäss</B> auf<B>160 '</B> erhitzt. Nach dem Erkal-         ten    wird filtriert, gewaschen und getrocknet.

    Der entstandene Farbstoff stellt ein blau  violettes Pulver dar, das sich mit grüner  Farbe in konzentrierter Schwefelsäure löst.  Aus blauer     Küpe    wird Baumwolle in ge  deckten Grautönen von sehr guten     Eclitheiten     angefärbt. Der Chlorgehalt des Produktes  deutet auf das Vorliegen eines     Monochlor-di-          methylamino-benzanthronpyrazolanthrons.  



  Process for the preparation of a nepon dye of the benzanthronpyrazolaiitliron series The subject of this additional patent is a process for the preparation of a vat dye of the benzanthronpyrazolanthron series, which is characterized in that chlorobenzanthronpyrazolanthrone, which is produced by the action of chlorine on benzanthronpyr- azolanthrone in nitrobenzene 135 / B> to 145 <B> 'C </B> can be obtained,

   in the presence of a solvent with dimethylamine by heating to react. <I> Example: </I> <B> 10 </B> parts of chloro-benzanthronpyrazolantlirone (obtained by the action of chlorine on benzanthronpyrazolanthrone in nitrobenzene at <B> 135 </B> to 145 <B> 'C, </ B> green soluble in concentrated sulfuric acid, chlorine content about <B> 16%) </B> are mixed with <B> 30 </B> parts of 46% alcoholic dimethylamine solution with the addition of a small amount of copper chloride for 24 hours in a closed container <B> barrel </B> heated to <B> 160 '</B>. After cooling, it is filtered, washed and dried.

    The resulting dye is a blue-violet powder that dissolves in concentrated sulfuric acid with a green color. Cotton is dyed from a blue vat in opaque gray tones of very good eclinity. The chlorine content of the product indicates the presence of a monochloro-dimethylamino-benzanthronpyrazolanthrone.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes der Benzanthronpyrazolanthron- reihe, dadurch gekennzeichnet, dass man Chlor-benzanthronpyrazolanthron, das durch Einwirkung von Chlor auf Benzanthronpyr- azolanthron in Nitrobenzol bei<B>135</B> bis 145<B>' C</B> erhalten werden kann, in Gegen wart eines Lösungsmittels mit Dimethyl- amin durch Erhitzen'zur Umsetzung bringt. PATENT CLAIM: Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series, characterized in that chlorobenzanthrone pyrazole anthrone, which is formed by the action of chlorine on benzanthrone pyrazole anthrone in nitrobenzene at 135 to 145 C Can be obtained in the presence of a solvent with dimethylamine by heating brings about the reaction. Der entstandene Farbstoff stellt ein blau violettes Pulver dar, das sich mit grüner Farbe in konzentrierter Schwefelsäure löst. Aus blauer Küpe wird Baumwolle in ge deckten Grautönen von sehr guten Eehtheiten angefärbt. Der Chlorgehalt des Produktes deutet auf das Vorliegen eines Monoeblor-di- methylamino-benzaut'hronpyrazola,nthrons. UNTERANSPRüCHE: <B>1.</B> Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Äthylalkohol als Lösungsmittel verwendet. The resulting dye is a blue-violet powder that dissolves in concentrated sulfuric acid with a green color. Cotton is dyed from a blue vat in opaque gray tones of very good integrity. The chlorine content of the product indicates the presence of a monoebloro-dimethylamino-benzaut'hronpyrazola, nthrons. SUBClaims: <B> 1. </B> Process according to patent claim, characterized in that ethyl alcohol is used as the solvent. 2, Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man dem Reaktions gemisch einen Katalysator zusetzt. 2. Process according to claim, characterized in that a catalyst is added to the reaction mixture.
CH150191D 1929-02-27 1929-11-23 Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series. CH150191A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE150191X 1929-02-27
CH146858T 1929-11-23

Publications (1)

Publication Number Publication Date
CH150191A true CH150191A (en) 1931-10-15

Family

ID=25714948

Family Applications (1)

Application Number Title Priority Date Filing Date
CH150191D CH150191A (en) 1929-02-27 1929-11-23 Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series.

Country Status (1)

Country Link
CH (1) CH150191A (en)

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