Process for the production of anhydrosugar alcohols

Details Process for the production of anhydrosugar alcohols Process for the production of anhydrosugar alcohols

C - Chemistry, Metallurgy

07

D

C07D 493/04 (2006.01)

Patent

CA 2545914

A process is provided for the preparation of anhydrosugar alcohols. The process involves heating a sugar alcohol or a monoanhydrosugar alcohol starting material in the presence of an acid catalyst, and subsequent purification of the anhydrosugar alcohol. In some embodiments of the present invention, film evaporators are used in distillation and purification of the anhydrosugar alcohols. Anhydrosugar alcohols of very high purity are achieved in the practice of the present invention. In some embodiments of the present invention, very high purities of the anhydrosugar alcohols are achieved without the use of organic solvents.

L'invention concerne un procédé de préparation d'alcools de sucre anhydre. Ledit procédé consiste à chauffer un produit de départ à base d'alcool de sucre ou d'alcool de sucre mono-anhydre en présence d'un catalyseur acide, puis à purifier ultérieurement l'alcool de sucre anhydre. Dans certains modes de réalisation de la présente invention, des évaporateurs à film sont utilisés dans la distillation et la purification des alcools de sucre anhydre. Des alcools de sucre anhydre de pureté extrêmement élevée sont obtenus lors de la mise en oeuvre de la présente invention. Dans certains modes de réalisation, des degrés de pureté extrêmement élevés des alcools de sucre anhydre sont obtenues sans utiliser de solvants organiques.

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