Nippon Kayaku Kabushiki Kaisha

Masashi Hashiba

Masahiko Yabuuchi

Tsuneo Nakamura

Hiroshi Akanuma

Shigeru Tajima

Hiroshi Hayami

Minoru Masuda

Kazuo Katoh

Masachika Hirayama

Tomoko Takezawa

Akira Takahashi

Tatsuhiko Kurakami

Atsushi Sudo

Kazuo Shiraishi

Kazuo Kato

Susumu Matsumoto

Toru Kawaguchi

Yoshiko Shoya

Hideo Yoshida

Asa Taniguchi

Akinori Naito

An object of the invention is to provide a novel catalyst having high mechanical strength and capable of obtaining an unsaturated aldehyde or an unsaturated carboxylic acid in a high yield and a method for producing the same, and a method for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid using the catalyst. By containing silane-treated glass fibers in a catalytic active component composed of molybdenum and bismuth as essential components, high mechanical strength is revealed, and it is possible to obtain an unsaturated aldehyde or an unsaturated carboxylic acid in a high yield.

Catalyst for producing unsaturated aldehyde and/or unsaturated carboxylic acid, method for producing the catalyst, and method for producing unsaturated aldehyde and/or unsaturated carboxylic acid using the catalyst

A catalyst and a catalyst packing schedule are designed so that a relation between the raw material conversion rate at which the yield of the objective product becomes maximum and the raw material conversion rate at which a high and low correlation between maximum temperature of the catalyst layer present closest to a reaction gas inlet side Zin and maximum temperature of the catalyst layer present closest to a reaction gas outlet side Zout is reversed satisfies a specific condition of 0.5&#x2266;Cmax&#x2212;Ccrs&#x2266;5, in which Cmax: a raw material conversion rate at which yield of the objective products becomes maximum; and Ccrs: a raw material conversion rate at which, when maximum temperature of the catalyst layer Zin is regarded as Tin, maximum temperature of the catalyst layer Zout is regarded as Tout, and the raw material conversion rate is changed, a high and low correlation between Tin and Tout is reversed.

Process for producing unsaturated aldehyde and/or unsaturated carboxylic acid

A present invention relates to a method for quantitatively determining sugar-alcohols characterized by passing test samples containing sugar-alcohols, proteins, and saccharides through a column filled with basic anion-exchange resins which have a protein-removing ability and a saccharide-removing ability, and then quantitaing the sugar-alcohols in the effluent out of the column, a column filled with said resins and an aqueous solution of boric acid, and a kit. Sugar-alcohols such as 1,5-anhydroglucitol and the like have been calling attention as markers for diabetes mellitus recently.

Method for quantitatively measuring sugar-alcohol, column and kit

The present invention relates to a method of quantitative assay for 1,5-anhydroglucitol which comprises oxidizing 1,5-anhydroglucitol in an aqueous solution of a specimen in the presence of an electron acceptor to produce a compound represented by formula (1) below or a hydrate thereof represented by formula (2) below and quantitatively determining 1,5-anhydroglucitol from a consumption amount of said electron acceptor in said aqueous solution of a specimen or from a production amount of the reduction product of said electron acceptor produced or from an amount of oxidized product of 1,5-AG represented by formula (1) or formula (2). ##STR1##

Method of quantitative assay for 1,5-anhydroglucitol

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Gunma, Japan

Masashi Hashiba