Improved process for preparing anthraquinone in an aqueous...

C - Chemistry – Metallurgy – 07 – C

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260/236.2

C07C 50/18 (2006.01)

Patent

CA 1126267

ABREGE DESCRIPTIF Procédé amélioré pour la préparation de l'anthra- quinone par insufflation d'air dans une suspension de tétra- hydro-1,4,4a,9a anthraquinone dans une solution aqueuse alcaline, caractérisé en ce que la suspension comprend un alcool primaire ou secondaire aliphatique monofonctionnel, linéaire ou ramifie, possédant 2 à 10 atomes de carbone. L'addition d'alcool permet d'éviter la formation de mousses.

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