Mitsubishi Chemical Corporation

Mitsubishi Kasei Corporation

Kazunari Takahashi

Masaru Utsunomiya

Yoko Seto

Souichi Orita

Masayuki Otake

Satoshi Yamazaki

Chihiro Miyazawa

Haruhiko Kusaka

Hiroshi Kameo

Shinji Isogai

Hitoshi Sugiyama

Noboru Ueki

Tetsuo Asanuma

Kazutaka Maruyama

Souichi Amano

Makoto Ishikawa

Tomonori Okubi

Tetsuhiro Yamauchi

Soichi Orita

Masayuki Hattori

The present invention provides a method for producing a carbonyl compound by dehydrogenating an alcohol. Namely, it relates to a method for producing a carbonyl compound, which comprises dehydrogenating an alcohol in the presence of a complex compound catalyst comprising ruthenium and an organic phosphine wherein aliphatic carbons are bonded to two or more of the three bonding hands of the phosphorus atom.

Method for producing carbonyl compound by dehydrogenating alcohol

Process for preparing pyrrolidone derivative

The disclosure describes a method for separating a ruthenium complex, which comprises removing an objective hydrogenation reaction product from a hydrogenation reaction solution of an organic carbonyl compound in the presence of a ruthenium complex having a tertiary organic phosphorus compound as ligand to obtain a catalyst solution, contacting said catalyst solution with a polar solvent, and carrying out a phase-separation into a liquid phase substantially composed of the polar solvent and an another liquid phase substantially containing the ruthenium complex.

Process for preparing butyrolactone and method for separating organic

Disclosed herein are a method of cleaning an oil-deposited material, which comprises cleaning a material having oils deposited on the surface thereof with a cleaning agent comprising 25 to 90% by weight of at least one of compounds selected from the group consisting of pyrrolidones, .gamma.-butyrolactone and N,N-dimethylacetamide, and 10 to 75% by weight of water, then eliminating at least a portion of the deposited cleaning agent from said material to be cleaned by a physical means, and then applying water-washing with water, steam or water and steam; an apparatus for cleaning an oil-deposited materialhaving oils deposited on the surface thereof; and a cleaning agent therefor.

Method for cleaning oil-deposited material

A process for producing a lactone by reacting in a hydrogenation reaction zone a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester with hydrogen in a liquid phase using a solvent in the presence of a catalyst comprising ruthenium and an organic phosphine, which process comprises the following steps (1) to (6):

Process for producing a lactone

Growing community of inventors

Kurashiki, Japan

Kazunari Takahashi