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US 10,093,643 B2Granted
Method for synthesizing cyclic carbonates
AssigneeHenkel AG & Co. KGaA and Henkel IP & Holding GmbH
InventorsThérèse Hémery, Hans-Georg Kinzelmann, Rosa Maria Sebastián Pérez, Jordi Marquet Cortés, Yongxia Wang, Jorge Aguilera
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Abstract
The present invention relates to a method for synthesizing cyclocarbonates by reacting an epoxy compound and carbon dioxide at atmospheric pressure and elevated temperature in the presence of a heterogeneous catalyst system comprising an alkali metal halide and silica as well as the use of said catalyst system for the synthesis of cyclocarbonates.
Claims13
A method for synthesizing a cyclocarbonate, comprising:
- providing at least one epoxy compound;
- providing carbon dioxide;
- providing a heterogeneous catalyst system;
- reacting the at least one epoxy compound and the carbon dioxide at atmospheric pressure and a temperature in the range of 100 to 150° C. in the presence of the heterogeneous catalyst system, wherein the catalyst system comprises
- (a) at least one alkali metal halide selected from the group consisting of alkali metal iodides and alkali metal bromides, and
- (b) silica (SiO2).
3 more elements
Dependencies are inferred from the claim text.