CH150185A - 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
CH150185A
CH150185A CH150185DA CH150185A CH 150185 A CH150185 A CH 150185A CH 150185D A CH150185D A CH 150185DA CH 150185 A CH150185 A CH 150185A
Authority
CH
Switzerland
Prior art keywords
benzanthrone
pyrazole
pyrazole anthrone
preparation
blue
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 CH150185A publication Critical patent/CH150185A/en

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Description

  

  Verfahren zur Darstellung eines     güpenfarbstoffes    der     Benzanthronpyrazolanthronreiheo       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines     Küpenfarb-          stoffes    der     Benzanthronpyrazolanthronreihe,     welches dadurch gekennzeichnet ist, dass man  1 Molekül     Dichlorbenzanthronpyrazolanthron,     wie es durch     Chlorierung    von     Benzanthron-          pyrazolanthron    mittelst     Sulfurylchloricl    er  halten werden kann,

   in Gegenwart eines Lö  sungsmittels     mit    2 Molekülen     Aminobenz-          anthronpy        razolanthron,    erhältlich durch     Ni-          trierung    von     Benzanthronpyrazolanthron    und  nachfolgende Reduktion dieses     Nitroproduk-          tes,    durch Erhitzen zur Reaktion bringt.  



  <I>Beispiel:</I>  92,2 Gewichtsteile     Amino-Benzanthronpyr-          azolanthron        (vergl.    Beispiel des Hauptpaten  tes Nr. 146858) und 51,5 Gewichtsteile     Di-          ehlor-Benzanthronpyrazolanthron,    erhältlich  durch     Chlorierung    von     Benzanthronpyrazol-          anthron    mittelst     Sulfurylchlorid    nach dem  Schweizer Patent Nr.<B>131,362,</B> Beispiel 1,    werden mit 75 Gewichtsteilen trockenem Na  triumacetat und 25 Gewichtsteilen Kupfer  karbonat in 1750 Gewichtsteilen Nitrobenzol  16 Stunden lang zum Kochen erhitzt.

   Das  Produkt stellt nach der Aufarbeitung ein       braunstichig    schwarzes     Farbstoffpulver    dar,       violettstichigbraun    löslich in     konzentrierter     Schwefelsäure. Wasser fällt aus dieser Lö  sung grünblaue Flocken. Aus     grünstichig     blauer alkalischer     pIydrosulfitküpe    wird  Baumwolle in echten blaugrauen Tönen an  gefärbt.



  Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series o 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 1 molecule of dichlorobenzanthrone pyrazolanthrone, as can be obtained by chlorination of benzanthrone pyrazolanthrone,

   in the presence of a solvent with 2 molecules of aminobenzanthronpyrazolanthrone, obtainable by nitration of benzanthronpyrazolanthrone and subsequent reduction of this nitro product, by heating.



  <I> Example: </I> 92.2 parts by weight of amino-benzanthrone-pyrazole-anthrone (see example of the main sponsor no. 146858) and 51.5 parts by weight of dichloro-benzanthrone-pyrazole-anthrone, obtainable by chlorination of benzanthrone-pyrazole-anthrone by means of sulfuryl chloride Swiss Patent No. 131,362, Example 1, are heated to boiling with 75 parts by weight of dry sodium acetate and 25 parts by weight of copper carbonate in 1750 parts by weight of nitrobenzene for 16 hours.

   After work-up, the product is a brownish black dye powder, soluble in concentrated sulfuric acid in a violetish brown color. From this solution water falls green-blue flakes. Cotton is dyed in real blue-gray tones from a greenish blue alkaline hydrosulfite vat.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Küpen- farbstoffes der Benzanthronpyrazolanthron- reihe, dadurch gekennzeichnet, dass man 1 Molekül Dichlorbenzanthronpyrazolanthron, wie es durch Chlorierung von Benzanthron- pyrazolanthron mittelst Sulfurylchlorid er- balten werden kann, in Gegenwart eines Lö sungsmittels mit 2 Molekülen Aminobenz- anthronpyrazolanthron, PATENT CLAIM: Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series, characterized in that 1 molecule of dichlorobenzanthrone pyrazole anthrone, as can be obtained by chlorination of benzanthrone pyrazole anthrone by means of sulfuryl chloride, in the presence of a solvent with 2 molecules of aminobenzolanthrone pyrazole anthrone , erhältlich durch Ni- trierung von Benzanthronpyrazolanthron und nachfolgende Reduktion dieses Nitroproduk tes, durch Erhitzen zur Reaktion bringt. Das Produkt stellt nach der Aufarbeitung ein braunstichig schwarzes Farbstoffpulver dar, violettstichig braun löslich in konzen trierter Schwefelsäure. Wasser fällt aus die ser Lösung grünblaue Flocken. Aus grün stichig blauer alkalischer Hydrosulfitküpe wird Baumwolle in echten blaugrauen Tönen angefärbt. iJNTERANSPR-CCHE 1. obtainable by nitration of Benzanthronpyrazolanthron and subsequent reduction of this Nitroproduk tes, brings to reaction by heating. After work-up, the product is a brownish black dye powder, soluble in concentrated sulfuric acid with a violetish brown color. Water falls from this solution, green-blue flakes. Cotton is dyed in real blue-gray tones from a green, blue alkaline hydrosulfite vat. INTERPRETATION 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Nitrobenzol als Lösungsmittel verwendet. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktion in Gegenwart eines säurebindenden Mittel ausführt. 3. Verfahren nach Patentanspruch, dadurch gekennzeichnet, 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.
CH150185D 1928-12-01 1929-11-23 Process for the preparation of a vat dye of the benzanthrone pyrazole anthrone series. CH150185A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE150185X 1928-12-01
CH146858T 1929-11-23

Publications (1)

Publication Number Publication Date
CH150185A true CH150185A (en) 1931-10-15

Family

ID=25714942

Family Applications (1)

Application Number Title Priority Date Filing Date
CH150185D CH150185A (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) CH150185A (en)

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