C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 209/84 (2006.01) C07C 7/14 (2006.01) C07C 15/28 (2006.01)
Patent
CA 2433000
The invention relates to a method for obtaining anthracene and carbazole, in addition to the resultant products thereof, from anthracene oil arising from the distillation of coal tar or the purification products thereof. Anthracene oil or the purification product raw anthracene is transformed into a melt without the addition of a solvent. The melt is cooled to below the crystallization point of carbazole and anthracene. The crystal product thus obtained is separated from the liquid phase and the crystal product is distilled in order to obtain pure anthracene and pure carbazole.
L'invention concerne un procédé d'extraction d'anthracène et de carbazole, ainsi que de leurs produits de réaction, à partir de l'huile d'anthracène ou de ses produits d'épuration issue de la distillation de terre de houille. Selon ledit procédé, l'huile d'anthracène ou le produit d'épuration anthracène brut est mise en fusion sans addition de solvants, la fusion est refroidie en dessous du point de cristallisation du carbazole et de l'anthracène, et le produit cristallin obtenu est séparé de la phase liquide puis distillé de manière à obtenir de l'anthracène et du carbazole purs.
Alsmeier Friedhelm
Bergins Wolfgang
Bischof Rudolf
Buettner Thomas W.
Dialer Klaus
Riches Mckenzie & Herbert Llp
Ruetgers Chemicals Ag
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