Process for producing polyols with at least one...

Details Process for producing polyols with at least one... Process for producing polyols with at least one...

C - Chemistry, Metallurgy

07

H

260/233.2

C07H 3/10 (2006.01)

Patent

CA 1195687

PROCESS FOR PRODUCING POLYOLS WITH AT LEAST ONE OXACYCLOPENTANE RING ABSTRACT OF THE DISCLOSURE: Anhydro sugar alcohols having at least one oxacyclo- pentane ring are prepared by dehydrating sugar alcohols having 4 to 6 carbon atoms. The process is carried out at reduced pres- sure and elevated temperature in the presence of a strongly acidic heterogeneous catalyst and in the absence of organic solvent. A reaction temperature of from about 100° C. to 160° C. is selected as a function of the pressure to minimize distillation of the anhydrous sugar alcohols from the reaction mixture. The process results in high product yields compared to prior art processes. * * * * * * * * - 17 -

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