Patent ID: 6933394
Filing Date: 2005-08-23
Classification: B01J,C07D,C07F

Abstract:
1. A catalyst for synthesizing alkylene carbonate from alkylene oxide and carbon dioxide comprising a quaternary phosphonium salt or a quaternary ammonium salt represented by the following general formula (4), wherein Rf represents a group selected from the group consisting of alkyl, arylalkyl, alkenyl and aryl groups, and one or more hydrogen atoms on at least one carbon atom of the group is substituted with a fluorine atom, R represents any group selected from the group consisting of alkyl, arylalkyl, alkenyl and aryl groups, and when two or more Rf's or R's are bonded to M, the Rf's or R's may be the same or different, M represents phosphorous or nitrogen atom, X represents chlorine, bromine, or iodine atom, and m represents any integer of 1 to 4.