Toray Industries, Inc.

Masataka Makino

Mark Joseph Burk

Katsushige Yamada

Masateru Ito

Kenji Kawamura

Sadanori Kumazawa

Satoshi Sakami

Michael Japs

Yusuke Tojo

Warren Clark

Izumi Morita

A process produces 1,4-butanediol by purifying 1,4-butanediol originated from a fermentation broth, by which process 1,4-butanediol having properties suited as a material of producing a polyester is obtained, which 1,4-butanediol enables to reduce by-production of tetrahydrofuran during the esterification reaction and to reduce the delay in polymerization. The process of producing 1,4-butanediol includes adding an alkaline substance other than an ammonia or an amine to an aqueous 1,4-butanediol-containing solution originated from a fermentation broth; distilling the resulting mixture; and recovering a 1,4-butanediol-containing solution from the vapor flow.

Process of producing 1,4-butanediol

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Nagoya, Japan

Masataka Makino