Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Adeka Corporation

Takemoto Yushi Kabushiki Kaisha

Asahi Denka Co., Ltd.

Takeshi Kanamori

Hisashi Okuyama

Hirotaka Okamoto

Mitsuru Nakano

Arimitsu Usuki

Etsuo Tobita

Naoshi Kawamoto

Tsuyoshi Urushihara

Makoto Ouchi

Naomi Okuyama, Legal Representative

Hitoshi Saito

Hisato Takeuchi

Tatsuhiko Osaki

Yuji Kageyama

Hiroshi Urayama

Seiji Yamashita

Yasumitsu Isobe

Mamoru Yasui

Takashi Inou

Yasumasa Horibe

An aliphatic polyester resin composition, useful for producing molded articles without causing deformation at the mold release time, has a non-copolymerized mixture of an aliphatic polyester resin including one or more polylactic acid resins and a crystallization nucleating agent including one or more metal salts of an aromatic sulfonate of Formula 1: 

Aliphatic polyester resin compositions, molded articles of aliphatic polyester resin and method of producing same

A polylactic acid resin composition in which polylactic acid is blended with dibasic acid bis(benzoylhydrazide) represented by general formula (I) below; and a process for producing heat-resistant polylactic acid resin moldings, wherein after the polylactic acid resin composition is melted, the polylactic acid resin composition melted is filled in a die of a molding machine and molded accompanied with crystallization, in which the temperature of the die has been set in a range not higher than the initiation temperature of crystallization and not lower than the glass transition temperature determined with a differential scanning calorimeter (DSC). (In the formula, R represents a alkylene, alkenylene, cycloalkylene, alkylene having an ether bond, or alkylene interrupted with a cycloalkylene, the groups each having 1 to 12 carbon atoms; and R, R, R, and Reach represent a hydrogen atom, halogen atom, alkyl, cycloalkyl, aryl, aralkyl, or alkylaryl, the groups each having 1 to 12 carbon atoms, or Rand Rand/or Rand Rbond to each other to form a five- to eight-membered ring.)

Polylactic acid resin composition, moldings, and process for production thereof

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): wherein Rrepresents an alkylene group having 1 to 10 carbon atoms; Rrepresents an alkyl group having 1 to 25 carbon atoms; and m is an integer between 1 to 6.

Polylactic acid resin and composition and molded article of the same

The polylactic acid composite material of the present invention comprises a polylactic acid, a low molecular weight compound which has an amide group, and a layered clay mineral that is organically modified by means of an organic onium salt. As a result, a polylactic acid composite material that has a sufficiently rapid crystallization rate, and that is superior in terms of heat resistance, moldability and mold release characteristics can be obtained.

Polylactic acid composite material and molded body

A polylactic acid resin composition comprising 100 parts by weight of a polylactic acid, (A) 0 to 10 parts by weight of a phenol antioxidant, and (B) 0.01 to 10 parts by weight of at least one amide compound selected from the group consisting of (b-1) an acyclic amide, (b-2) a cyclic amide, (b-3) an acyclic hydrazide, and (b-4) a cyclic hydrazide or (b-5) a compound represented by formula (P):wherein Rand Reach represent a hydrogen atom, a hydroxyl group, an alkyl group having 1 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms or an aryl group having 6 to 18 carbon atoms, or they are connected to each other to form a ring to make a condensed ring having a total carbon-atom number of 10 to 18; R represents a single bond, an n-valent hydrocarbon group having 2 to 30 carbon atoms, an n-valent heterocyclic group or a group of formula:

Polylactic acid resin composition and molded article thereof, and process of producing the molded article

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Toyota, Japan

Takeshi Kanamori