Mitsubishi Chemical Industries Limited

Mitsubishi Kasei Corporation

Nobuyuki Murai

Ichiro Yokotake

Junzo Haji

Masayuki Otake

Takashi Ushikubo

Takahiro Yamaguchi

Masato Sato

Hiroshi Takeo

Tatsuo Masuko

Toshihiro Kawakami

Masayuki Shirato

Hidetoshi Tanaka

Shigeo Fukaya

Jun Noma

Kazuya Nakamichi

A method for the production of polytetramethylene ether glycol wherein polymerization of tetrahydrofuran in the presence of fluorosulfonic acid is followed by hydrolysis of the resulting polymer, characterized by

Method for the production of polytetramethylene ether glycol

A method for producing an unsaturated glycol diester by reacting molecular oxygen, a carboxylic acid and a conjugated diene in the presence of a solid catalyst containing palladium and tellurium supported on a carrier, wherein an active carbon with the total pore volume of pores having radii of from 18 to 100,000 .ANG. being at least 0.45 cc/g and with the volume of pores having radii of at least 3,000 .ANG. constituting at least 50% of the total pore volume, is used as the carrier for the solid catalyst.

Method for producing an unsaturated glycol diester

A method for hydrogenating an aldehyde and/or a ketone in the presence of a ruthenium catalyst, wherein said ruthenium catalyst is obtained by reducing an alkali metal ruthenate with a reducing agent selected from the group consisting of methanol, formaldehyde and formic acid.

Method for hydrogenating an aldehyde and/or a ketone

A process for producing dimethyl ether useful as a propellant by dehydrating methanol and recovering dimethyl ether from the dehydrated product by distillation, which comprises

Process for the production of dimethyl ether useful as a propellant

There is disclosed a process for the production of isobutyric acid by liquid-phase oxidation of isobutyraldehyde in the presence of an alkali metal-containing compound, the oxidation being effected while maintaining the molar ratio of oxygen to isobutyraldehyde to be fed at 0.5 or above.

Process for preparing isobutyric acid

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Yokkaichi, Japan

Nobuyuki Murai