USE OF CATALYST IN MANUFACTURE OF ALIPHATIC OLIGOCARBONATE

摘要

PROBLEM TO BE SOLVED: To provide use of a catalyst having a high activity capable of achieving faster transesterification in the transesterification for manufacturing an aliphatic origocarbonate.;SOLUTION: The catalyst uses a salt and a complex of a rare earth metal and organic and/or inorganic compounds of the group III metals in the Mendeleev's element periodic law table except cerium, a cerium compound and a lanthanum hydroxide, as a catalyst for transesterification in the manufacture of an aliphatic origocarbonate having a molecular weight of 500-5,000 from an aliphatic polyol and an organic carbonate.;COPYRIGHT: (C)2003,JPO