Maruzen Petrochemical Company, Limited

Maruzen Polymer Company, Ltd.

Nisso Maruzen Chemical Co., Ltd.

Tsuyoshi Matsumoto

Kunihiro Inamatsu

Masao Kaneko

Isao Maruyama

Sakae Kamiyama

Masao Kawahara

Kazuo Soga

Masaaki Matsui

Toshiyuki Fukudome

Keizo Kase

Masanobu Taniguchi

Akihiro Kawasaki

Akihiko Imai

Kouji Mizokami

Masaaki Tsuchida

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

The invention relates to a method for producing an ethylenic polymer composition, suitable for molding, at high catalytic efficiency. The ethylenic polymer composition produced has as a high melt tension when melted, and a high melt modulus (die swell ratio). The process comprises a three step polymerization of an olefin employing a transition metal catalyst, the catalyst being produced in a specific manner.

Method for producing an ethylenic polymer composition

The present invention relates to an isolation process of 2-chloroethylvinyl ether from a thermal decomposition product of 1,1-di(2-chloroethoxy)ethane, and comprises the azeotropic distillation of 2-chloroethyl vinyl ether and 2-chloroethanol from the product, the reaction of the 2-chloroethanol in the azeptrope with the 2-chloroethyl vinyl ether to 1-1-di(2-chloroethoxy)ethane without the separation from the product, and the purification of 2-chloroethyl vinyl ether by the rectification of the above reaction mixture.

Isolation process of 2-chloroethyl vinyl ether

The present disclosure relates to a process for alternating copolymerization of propylene and butadiene in the absence of a polymerization solvent. The disclosure contains information relative to commercial production of the said copolymer and detailed teachings relative to the preparation of catalyst for use in the said process.

Process for bulk alternating copolymerization of propylene and butadiene

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Ichihara, Japan

Tsuyoshi Matsumoto