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AssigneesClariant International Ltd., Universiteit Utrecht Holding B.V.
InventorsAnton Kaiser, Bert Marc Weckhuysen, Dirk Leinweber, Fiona Kirby, Franz Xaver Scherl, Hans Joachim Metz, Pieter Cornelis Antonius Bruijnincx
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The invention relates to a method for preparing polyglycerol, comprising —providing a catalyst salt on a support, the catalyst salt having catalytic activity with respect to an etherification reaction of a polyol selected from the group of glycerol and oligoglycerols, —contacting the catalyst salt on the support with a fluid phase comprising a polyol selected from the group of glycerol and oligoglycerols, —and subjecting the polyol in the fluid phase to an etherification reaction in the presence of the catalyst salt, thereby forming the polyglycerol.
A method for preparing polyglycerol, comprising:
A polyglycerol mixture having a hydroxyl value in the range of 846-1072 mg KOH/g, as determined by DIN 53240;
A catalyst salt on a support, the catalyst salt having catalytic activity with respect to an etherification reaction of a polyol selected from the group of glycerol and oligoglycerols, wherein the support comprises 1-15 wt. % catalyst salt, based on the total weight of the catalyst salt and support, wherein the salt is a calcium salt and the support is a carbon support material, which carbon support material is selected from the group consisting of carbon nanofibers and activated carbon.
A method for preparing polyglycerol, comprising:
Dependencies are inferred from the claim text.