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US 5,635,588 AGranted
Polymerisation of glycerol using a zeolite catalyst
AssigneeUnichema Chemie B.V.
InventorsJohan I. Eshuis, Johannes A. Laan, Ronald P. Potman
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Abstract
Disclosed herein is a process wherein glycerol, glycidol or 2,2-dimethyl-1,3-dioxolane-4-methanol is polymerized in the presence of an acid zeolite having an average pore size of at least 0.6 nanometer at 150.degree.-250.degree. C. At least 50 wt. % of cyclic polymers are obtained.
Claims7
A process of preparing polymers of glycerol in which glycerol, glycidol or 2,2-dimethyl-1,3-dioxolane-4-methanol is polymerized in the presence of a zeolite, characterized in that an acid zeolite having an average pore size of at least 0.6 nanometer is used.
Dependencies are inferred from the claim text.