Sumitomo Chemical Company, Limited

Shoko Ikeda

Masayuki Yoshii

Hirofumi Koike

Makoto Murata

Shinjiro Ishihara

Tatsuro Uekusa

A method for producing cumene involves subjecting cumyl alcohol to (a) hydrocracking reaction, or (b) dehydration and subsequent hydrogenation reaction, to obtain cumene. The method includes the following steps:

Method for producing cumene

The objective of the present invention is to provide a method for the highly selective production of dipropylene glycol containing 1,1'-oxybis-2-propanol in a proportion of 0.10 to 0.70 and/or tripropylene glycol containing 1,1&#x2032;-[(1-methyl-1,2-ethanediyl)bis(oxy)]bis-2-propanol in a proportion of 0.10 to 0.70. The present invention is a method for producing dipropylene glycol containing 1,1&#x2032;-oxybis-2-propanol in a proportion of 0.10 to 0.70 and/or tripropylene glycol containing 1,1&#x2032;-[(1-methyl-1,2-ethanediyl)bis(oxy)]bis-2-propanol in a proportion of 0.10 to 0.70, the method comprising a reaction step of making a reactant comprising propylene oxide and water react in the presence of a catalyst, wherein the catalyst comprises at least one element selected from the group consisting of vanadium, niobium, and tantalum, and the Hammett acidity function (H) of the catalyst satisfies H&#x2266;9.3.

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Chiba, Japan

Shoko Ikeda