Tokyo Institute of Technology

Maruzen Petrochemical Company, Limited

Kazuo Soga

Sakuji Ikeda

Tsuyoshi Matsumoto

Kunihiro Inamatsu

A polymerization catalyst comprising a reaction product of an organic rare earth metal compound of the formula (I),

Polymerization catalyst and method for producing polyolefin or olefin

Process for preparing 2-oxazolidone and its derivatives by reacting react carbon dioxide with aziridine compound, preferably, in the presence of Lewis acid as a catalyst.

Process for preparing 2-oxazolidone and its derivatives

There is provided a process of preparing polyesters having carbonyl group and ether linkage in the principal chain thereof by the reaction of carbon dioxide with vinyl compounds or diene compounds (diolefins) having Alfrey-Price's value of less than -0.9. Said reaction may be carried out in the presence of catalysts as shown below: alkoxides, acetylacetone complexes and alkyl compounds of titanium, magnesium, cobalt, manganese, zinc, aluminium, tin and mercury.

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Yokohama, Japan

Kazuo Soga