Sumitomo Chemical Company, Limited

Sumtiomo Chemical Company, Limited

Masaaki Katao

Toshio Sasaki

Akinobu Shiga

Kiyoshi Kawai

Shigeru Goto

Junpei Tsuji

Jun Yamamoto

Noriaki Oku

Koji Shinohara

Shigenori Shiraishi

A method for collecting an object material from a solution, which comprises the following steps:

Method for collecting object material from solution

A process for the production of cumene, which comprises producing cumene from cumyl alcohol and hydrogen with a dehydration catalyst and a hydrogenation catalyst, wherein the dehydration catalyst and hydrogenation catalyst are alternately packed so as to form n layers (n is an integer of 3 or more) or are packed as a mixture thereof in a reactor.

Process for producing cumene

A process for producing purified propylene oxide comprising:

Method for producing propylene oxide

A process for recovering cumene, characterized by subjecting 2,3-dimethyl-2,3-diphenylbutane produced in a process in which cumene is used, to hydrogenolysis in the presence of a catalyst thereby to convert it into cumene, and recovering the cumene.

Method of recovering cumene

Process for producing oxirane compound

Olefin polymers are produced by a process which comprises homopolymerizing or copolymerizing olefins in the presence of a catalyst system comprising:

Process for producing olefin polymers and catalyst used therein

Process for producing .alpha.-olefin polymers

Catalyst and process for producing alpha-olefin polymers using the same

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Ichihara, Japan

Masaaki Katao