Teijin Limited

Musashino Chemical Laboratory, Ltd.

Kohei Endo

Kinji Hasegawa

Hirotaka Suzuki

Shigeyoshi Masuda

Shin To

Takaaki Matsuda

The polylactic acid film is obtained by melt extruding polylactic acid (A) prepared by melt kneading together polylactic acid (B) which comprises an L-lactic acid unit as the main ingredient and polylactic acid (C) which comprises a D-lactic acid unit as the main ingredient in a specific weight ratio, wherein the polylactic acid film has:

Polylactic acid film

A film made of a resin composition which includes polylactic acid (component A) composed of poly(L-lactic acid) and poly(D-lactic acid) and acrylic resin (component B) and has a crystal melting peak at 190&#xb0; C. or higher when measured by a scanning differential calorimeter (DSC). The film has a small change in birefringence caused by external force, excellent dimensional stability at the time of heating and a small change in birefringence caused by heat stress.

Film

It is an object of the present invention to provide a polylactic acid composition having excellent crystallinity, wet heat stability and melt stability. It is another object of the present invention to provide a molded article which is obtained from the polylactic acid composition and excellent in appearance and color. The present invention is a composition and molded article thereof which comprises a polylactic acid (component A), a carbodiimide compound (component B) and a phosphoric acid ester metal salt (component C).

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Iwakuni, Japan

Kohei Endo