abstract |
The present invention relates to a process for preparing alkylene carbonates from alkylene oxides and carbon dioxide and to 1,3-dialkylimidazolium dihalodialkylphosphatetozinc catalysts therefor. According to the production method of the present invention, the alkylene carbonate can be produced in high yield and high purity in a short time under mild conditions, the 1,3-dialkylimidazolium dihalodidialkylphosphatetozinc catalyst according to the present invention In addition to being inexpensive, they also have good thermal stability and do not decompose, resulting in halide by-products. |