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CH149413A - Process for the production of a nitrogen-containing condensation product. - Google Patents

Process for the production of a nitrogen-containing condensation product.

Info

Publication number
CH149413A
CH149413A CH149413DA CH149413A CH 149413 A CH149413 A CH 149413A CH 149413D A CH149413D A CH 149413DA CH 149413 A CH149413 A CH 149413A
Authority
CH
Switzerland
Prior art keywords
nitrogen
condensation product
production
containing condensation
red
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 CH149413A publication Critical patent/CH149413A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     stickstoffhaltigen        Kondensationsproduktes.       Es wurde gefunden, dass man ein wert  volles     stickstoffhaltiges    Kondensationspro  dukt erhält, wenn man das aus dem durch  Nitrieren von     Pyrantbron    in Nitrobenzol mit  hochkonzentrierter Salpetersäure erhältlichen       Nitropyranthron    durch Reduktion entste  hende     2lonoaminopyranthron        mit        Glyzerin    in  Gegenwart von sauren,     wasserentziehenden     Mitteln behandelt.

       Gewünschtenfalls    kann  man zur Beschleunigung der Reaktion in Ge  genwart von oxydierend wirkenden Mitteln,  wie Nitrobenzol     etc.,    arbeiten.  



  Das erhaltene     Py        ridinopyranthron    löst  sich in konzentrierter Schwefelsäure mit  blauer Farbe, kristallisiert aus hochsiedenden       organischen        Lösungsmitteln    in rotbraunen  Nadeln, die oberhalb 300   C schmelzen, und  liefert auf der pflanzlichen Faser aus violett  roter     Küpe    sehr kräftige blaurote Färbungen  von sehr guter Echtheit.  



       Beispiel:     42 Teile     Monoaminopyranthron    werden in  1000 Teilen konzentrierter Schwefelsäure un-         ter    Rühren gelöst. Nach Zugabe von 24 Tei  len Nitrobenzol und 65 Teilen Glyzerin er  wärmt man auf<B>110</B> bis 115   C und hält so  lange bei dieser Temperatur, bis die Reak  tion beendet ist, was man am Abfallen der       während    der     Reaktion    steigenden Innentem  peratur leicht feststellen kann. Darauf arbei  tet man in der     üblichen    Weise auf.  



  Das Reaktionsprodukt kann gegebenen  falls über sein     Oxoniumsalz    oder Ammonium  salz oder durch Behandeln mit Oxydations  mitteln, zum Beispiel in Form seiner wässe  rigen Paste mit     Hypochlorit,    gereinigt wer  den.



  Process for the production of a nitrogen-containing condensation product. It has been found that a valuable nitrogen-containing condensation product is obtained if the 2lonoaminopyranthrone produced by reduction of the nitropyranthrone obtained by nitrating pyrantbrone in nitrobenzene with highly concentrated nitric acid is treated with glycerol in the presence of acidic dehydrating agents.

       If desired, one can work in the presence of oxidizing agents, such as nitrobenzene, etc., to accelerate the reaction.



  The pyridinopyranthrone obtained dissolves in concentrated sulfuric acid with a blue color, crystallizes from high-boiling organic solvents in red-brown needles that melt above 300 ° C. and provides very strong blue-red colorations of very good fastness on the vegetable fiber from a violet-red vat.



       Example: 42 parts of monoaminopyranthrone are dissolved in 1000 parts of concentrated sulfuric acid with stirring. After adding 24 parts of nitrobenzene and 65 parts of glycerine, it is warmed to 110 to 115 C and held at this temperature until the reaction has ended, which can be seen in the decrease in the increase during the reaction Can easily determine the internal temperature. You work on it in the usual way.



  The reaction product can, if appropriate, via its oxonium salt or ammonium salt or by treatment with oxidizing agents, for example in the form of its aqueous paste with hypochlorite, purified.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines stick stoffhaltigen Kondensationsproduktes, da durch gekennzeichnet, dass man das aus dem durch Nitrieren von Pyranthron in Nitroben- zol mit hochkonzentrierter Salpetersäure er hältlichen Nitropyranthron durch Reduktion entstehende Monoaminopyranthron mit Gly- zerin in Gegenwart von sauren, wassereni-- ziehenden Mitteln behandelt. PATENT CLAIM: A process for the production of a nitrogen-containing condensation product, characterized in that the monoaminopyranthrone, which is obtained by nitrating pyranthrone in nitrobenzene with highly concentrated nitric acid, is obtained by reduction with glycerine in the presence of acidic, water-drawing agents Means treated. Das erhaltene Pyridinopyranthron löst sich in konzentrierter Schwefelsäure mit blauer Farbe, kristallisiert aus hochsiedenden organischen Lösungsmitteln in rotbraunen Nadeln, die oberhalb 300 G schmelzen, und liefert auf der pflanzlichen Faser aus rotvio letter Iiüpe sehr kräftige blaurote Färbungen von sehr guter Echtheit. The pyridinopyranthrone obtained dissolves in concentrated sulfuric acid with a blue color, crystallizes from high-boiling organic solvents in red-brown needles which melt above 300 G, and gives very strong blue-red colorations of very good fastness on the vegetable fiber from rotvio letter Iiüpe.
CH149413D 1929-06-21 1930-06-20 Process for the production of a nitrogen-containing condensation product. CH149413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE149413X 1929-06-21

Publications (1)

Publication Number Publication Date
CH149413A true CH149413A (en) 1931-09-15

Family

ID=5673324

Family Applications (1)

Application Number Title Priority Date Filing Date
CH149413D CH149413A (en) 1929-06-21 1930-06-20 Process for the production of a nitrogen-containing condensation product.

Country Status (1)

Country Link
CH (1) CH149413A (en)

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