Process for the preparation of an alkali-metal benzoate...

Details Process for the preparation of an alkali-metal benzoate... Process for the preparation of an alkali-metal benzoate...

C - Chemistry, Metallurgy

07

C

260/640, 202/92,

C07C 33/22 (2006.01) C07C 29/80 (2006.01) C07C 51/41 (2006.01) C07C 51/42 (2006.01) C07C 63/08 (2006.01)

Patent

CA 1133503

ABSTRACT OF THE DISCLOSURE An alkali-metal benzoate is prepared besides benzyl alcohol from a contaminated benzyl benzoate reaction residue obtained in the oxida- tion of a monoalkyl-benzene compound with a gas containing molecular oxygen. The disclosed process pro- vides for distillation of the contaminated benzyl benzo- ate in the presence of a basic substance and the result- ing distillate is hydrolyzed using an alkali-metal base. In this way, the benzyl benzoate that pre- viously could not be separated from certain tar compo- nents by distillation is converted into a pure alkali metal benzoate such as sodium benzoate, besides pure benzyl alcohol, so that a waste product that was pre- viously useless is converted into useful substances.

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