US 7,488,835 B2
	Process for the preparation of alkylene carbonates
Eugene Marie Godfried Andre Van Kruchten, Amsterdam (Netherlands); Hendrik Stichter, Amsterdam (Netherlands); and Johannes Theodorus Gertruda Wijenberg, Amsterdam (Netherlands)
Assigned to Shell Oil Company, Houston, Tex. (US)
Filed on Jul. 31, 2006, as Appl. No. 11/461,325.
Claims priority of application No. 05254835 (EP), filed on Aug. 02, 2005.
Prior Publication US 2007/0179303 A1, Aug. 02, 2007
Int. Cl. C07D 317/36 (2006.01); C07D 317/38 (2006.01)

U.S. Cl. 549—230

17 Claims

1. A process for the catalytic carboxylation of alkylene oxides with carbon dioxide, in the presence of a catalyst composition and water, wherein the catalyst composition comprises an alkali metal halide and a macrocyclic chelating compound, and wherein the water is present in an amount of at least 0.05 moles per mole of alkylene oxide.