Patent Number: 7,825,212

Title: Polylactic acid resin and composition and molded article of the same

Abstract: This invention provides a polylactic acid resin composition in which stereocomplex crystals of poly-L-lactic acid and poly-D-lactic acid can be selectively crystallized to obtain polylactic acid having a sufficiently high speed of crystallization and a sufficiently high ratio of stereocomplex crystal and a molded article thereof obtained via melt molding and crystallization of the same. Such polylactic acid resin composition comprises polylactic acid capable of generating stereocomplex crystallization and an aromatic urea compound represented by formula (1): ##STR00001## wherein R.sup.1 represents an alkylene group having 1 to 10 carbon atoms; R.sup.2 represents an alkyl group having 1 to 25 carbon atoms; and m is an integer between 1 to 6.

Inventors: Ouchi; Makoto (Kyoto, JP), Okamoto; Hirotaka (Aichi-gun, JP), Nakano; Mitsuru (Nagoya, JP), Usuki; Arimitsu (Nagoya, JP), Kanamori; Takeshi (Nagoya, JP), Okuyama; Hisashi (Nishikamo-gu, JP), Okuyama, legal representative; Naomi (Kyoto, JP), Yamashita; Seiji (Susono, JP), Kageyama; Yuji (Toyota, JP)

Assignee: Toyota Jidosha Kabushiki Kaisha

International Classification: C08G 63/08 (20060101); C08L 69/00 (20060101); C08L 67/00 (20060101)

Expiration Date: 2019-11-02 0:00:00