ORGANIC ZINC CATALYST, PREPARATION METHOD THEREFOR, AND METHOD FOR PREPARING POLYALKYLENE CARBONATE RESIN BY USING SAME

摘要

The present invention relates to: an organic zinc catalyst having a more uniform and finer particle size due to the inhibition of aggregation among catalyst particles during a preparation step, thereby exhibiting more improved activities in a polymerization step for preparing a polyalkylene carbonate resin; a preparation method therefor; and a method for preparing a polyalkylene carbonate resin by using the same. The organic zinc catalyst is a zinc dicarboxylate-based organic zinc catalyst used in a reaction for preparing a polyalkylene carbonate resin from carbon dioxide and an epoxide, wherein a monocarboxylic acid-derived residue having a C3-15 aliphatic hydrocarbon group (wherein at least one oxygen or carboxyl group can or cannot be contained in the aliphatic hydrocarbon group) is coupled to at least one end of the zinc dicarboxylate-based organic zinc catalyst.