Director-general of Agency of Industrial Science and Technology

Chuo Kagaku Co., Ltd.

Director-general of Agency of Industrial Science

Technology Research Institute of Innovative Technology for the Earth

Chuokagaku Ltd.

Masatoshi Koyama

Yutaka Tokiwa

Sigeyuki Takagi

Masahiro Suzuki

A biodegradable plastic composition, which may be in the form of a molded dy, includes gelatinized starch and a biodegradable, aliphatic polyester resin having a melting point of 45.degree.-130 .degree. C. The plastic is produced by kneading a blend containing a starchy substance selected from non-gelatinized, granular starch and gelatinized starch and the aliphatic polyester resin at a temperature higher than the melting point of the aliphatic polyester in the presence of water in an amount of 1-45 % based on the weight of the starchy substance.

Starch-containing biodegradable plastic and method of producing same

A biodecomposable or biodisintegrable moldable material which comprises a mixture of 10-70 vol. % of a natural high molecular substance, 30-70 vol. % of a thermoplastic resin and 0-45 vol. % of a filler.

Biodecomposable or biodisintegrable moldable material

Growing community of inventors

Tsukuba, Japan

Masatoshi Koyama