Mitsui Chemicals, Inc.

Mitsui Toatsu Chemicals, Incorporated

Shohei Nozaki

Masao Imai

Nobuhiro Fukuda

Hitoshi Shimotori

Tamotsu Asano

Kanemitsu Miyama

Satoru Iwamori

Masaru Arai

Shigeharu Morimoto

Masahiro Sakamoto

Hiroko Kaminaga

Kiyoo Miyazaki

Tatsuro Shinomiya

Naohiro Murata

Hydrochalcone derivatives, cosmetic compositions containing said

Described are a stick-shaped soil fumigant preparation and an application method therefor. The fumigant preparation comprises a water-soluble and/or biodegradable film and a soil sterilizer and/or nematocide hermetically packed in the form of a stick with the film. The soil sterilizer and nematocide are each in a liquid form at room temperature. The soil fumigant preparation according to the present invention remains suppressed in toxicity, volatility and irritation before application to the soil, but its active ingredient(s) are promptly released after application. In addition, the present invention makes it possible to provide a fumigant in such a form as permitting a substantial improvement in the efficiency of work by a fumigating worker and also to provide an effective application method therefor, without the need for any machine designed exclusively for fumigation.

Soil fumigant preparations

A method is provided for the separation of at least one aromatic amino acid from an aqueous solution of mixed amino acids including the aromatic amino acid. The aqueous solution is brought into contact with a strongly acidic gel-type cation exchange resin which has been converted into a salt with an alkali metal or an alkaline earth metal, whereby the aromatic amino acid is selectively sorbed by the cation exchange resin. The aromatic amino acid thus sorbed can then be desorbed from the ion exchange resin, preferably with water.

Separation method of amino acids

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Yokohama, Japan

Shohei Nozaki