Nippon Shokubai Co., Ltd.

Nippon Shokubai Kagaku Kogyo Co., Ltd.

Norton Company

Nippon Shokubai Kagaku Kogyo Kabushiki Kaisha

Yoshiaki Urano

Yukio Kadono

Hideaki Tsuneki

Masaru Kirishiki

Takakiyo Goto

Fumio Watanabe

Yoshiyuki Onda

Yoshitaka Arita

Tomoharu Oku

Hideyuki Nishibayashi

Hisakazu Shindou

Fumiaki Morishita

Yoshiyuki Hozumi

Yukihide Hashimoto

Nobuhiro Matsuura

In producing alkanolamines by use of a microporous material as a catalyst, the difficulty in industrially performing the production because of the short lifetime of the catalyst is resolved. A process of regenerating the catalyst by removing an organic substance deposited on the catalyst by means of decomposing and/or extracting the substance is introduced, and thereby steady production is carried out substantially over the long term by switching the reaction and the regenerating processes.

Method of producing alkanolamines and apparatus for producing same

A industrially advantageous process for preparing dialkyl carbonates is provided. The process is characterized in that an alkylene carbonate and an alcohol are subjected to an transesterification in the presence of a catalyst which contains, as the catalytically active component, at least one rare-earth oxide. According to this process, the transesterification progresses rapidly due to the excellent activity of the catalyst, and the catalyst can be readily separated after termination of the reaction, allowing high efficiency isolation and purification of dialkyl carbonate.

Process for preparing dialkyl carbonates

Process for producing aminocarboxylic acid salt

Process for producing aminocarboxylic acid salts

A method for the production of a 1,3-dioxolane represented by the general formula III: ##STR1## wherein R.sup.1 is hydrogen atom or an alkyl group of 1 to 5 carbon atoms and R.sup.2 is hydrogen atom or an alkyl group of 1 to 2 carbon atoms or a phenyl group, which method comprises reacting an aldehyde represented by the general formula I ##STR2## wherein R.sup.1 has the same meaning as defined above, with an alkylene oxide represented by the general formul II: ##STR3## wherein R.sup.2 has the same meaning as defined above, in an alkylene glycol solvent corresponding to said alkylene oxide in the presence of at least one catalyst selected from the group consisting of bromides of alkali metals, iodides of alkali metals, bromides of alkaline earth metals, and iodides of alkaline earth metals.

Method for production of 1,3-dioxolanes

Flotation collector and method for treatment of inorganic

The present invention discloses an acid gas absorbent composition, comprising a diethylene glycol dialkyl ether represented by the general formula I:

Acid gas absorbent composition

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Kawasaki, Japan

Yoshiaki Urano