Unitika Ltd.

Nec Corporation

Shiseido Company, Limited

Kazue Ueda

Fumio Matsuoka

Tatsuya Matsumoto

Mitsuhiro Kawahara

Akinobu Ogami

Takuma Yano

Miho Nakai

Masami Okamoto

Yutaka Oogi

Kazuko Yoshimura

Kazunobu Yamada

Masatoshi Iji

Akira Ito

Shin Serizawa

Motoki Takata

Tsunenori Yanagisawa

Takahiro Kusumoto

Shun Takahashi

Hiroo Kamikawa

Yohei Kabashima

Keisuke Kimura

Norio Fukawa

Shigeru Hayase

Yuji Kitora

Yoshio Okabayashi

Shigeta Fujii

Kiyohiko Yamamura

Tatsunori Masaki

Kazuhiko Inou

Takahiro c/oShisheido Research Center Kusumoto

Shun c/oShisheido Research Center Takahashi

Motoki c/oShisheido Research Center Takata

Provided is a polylactic acid resin composition obtained by adding a carboxylic acid amide and a carboxylic acid ester each of which has at least one polar group in a molecule to a polylactic acid resin reacted with a (meth)acrylate compound. Also provided is a polylactic acid resin molded article which is a molded article obtained by molding the polylactic acid resin composition, manufactured by setting a mold temperature to a glass transition temperature of a polylactic acid resin plus 20&#xb0; C. or higher and a melting point thereof minus 20&#xb0; C. or lower, at the time of injection molding the polylactic acid resin composition. Thus, a resin composition in which a moldability is improved at a temperature at which a polylactic acid resin is crystallized, and a molded article therefrom are provided.

Polylactic acid resin composition and molded item

A polylactic acid-based resin composition including a polylactic acid (A), a multilayered polymer (B) and a multilayered polymer (C), wherein the content of each of the multilayered polymer (B) and the multilayered polymer (C) is 0.5 to 8% by mass of the whole resin composition; the multilayered polymer (B) and the multilayered polymer (C) are each constituted of a core layer(s) and a shell layer(s); the core layer constituting the multilayered polymer (B) contains an acrylic rubber; and the core layer constituting the multilayered polymer (C) contains a composite rubber containing an acrylic component and a silicone component.

Polylactic acid-based resin composition, molded article and polylactic acid-based master batch pellets

Disclosed is a resin composition including a polylactic acid resin (A) and a polycarbonate resin (B) and a molded article produced by molding the resin composition. The mass ratio (A/B) between the resins (A) and (B) is 40/60 to 80/20. The ratio (MFR/MFR) between the melt flow rate (MFR) of the polylactic acid resin (A) and the melt flow rate (MFR) of the polycarbonate resin (B) at 240&#xb0; C. under a load of 21.2 N is 20 to 600. The polycarbonate resin (B) is particle-dispersed in island shapes in the polylactic acid resin (A) in a range from a surface of the molded article to a depth of 5 &#x3bc;m and lengths of cross sections of dispersed particles observed in a cross section of the molded article are 0.1 &#x3bc;m or more.

Resin composition, and molded article produced from the same

Disclosed is a resin composition forming an adhesive layer between a polylactic acid resin substrate layer and a polyolefin resin substrate layer. The resin composition includes a modified polyolefin resin (A) and a terpene resin (B), and the mass ratio (A)/(B) between the both resins (A) and (B) is 20/80 to 99/1. Alternatively, the resin composition may be a resin composition including 10 to 90% by mass of a polylactic acid resin (C), 5 to 89% by mass of the modified polyolefin resin (A) and 1 to 80% by mass of a hydrogenated petroleum resin (D), with the total amount of these resins constrained to be 100% by mass.

Resin composition, laminate using the same, and molded body using the laminate

Disclosed is a biodegradable resin composition improved in water barrier properties. Also disclosed is a molded body formed from such a resin composition. The biodegradable resin composition comprises 100 parts by mass of a biodegradable polyester resin and 0.1-15 parts by mass of a jojoba oil and/or a polar wax. The biodegradable polyester resin may contain not less than 50% by mass of a plant-based resin. Polylactic acid can be used as the plant-based resin.

Biodegradable resin and product molded or formed from the same

A biodegradable gas barrier vessel comprising 100 parts of mass of a biodegradable polyester resin having a polylactic acid content of not less than 50% by mass and 0.1 to 10 parts by mass of a phyllosilicate. The degree of crystallization as measured by X-ray diffractometry is not less than 15%, and the coefficient of oxygen permeation as measured under conditions of 20&#xb0; C. and relative humidity 90% is not more than 50 ml&#xb7;mm/m&#xb7;day&#xb7;MPa. Since the biodegradable polyester resin reinforced with the phyllosilicate has excellent heat resistance, the molded product can be heat treated at an elevated temperature. Such enhanced heat treatment conditions can further enhance the degree of crystallization of the polyester resin and thus can contribute to significantly improved gas barrier properties.

Biodegradable gas barrier container and process for producing the same

Disclosed is a foam sheet made of a biodegradable resin composition. The biodegradable resin composition contains a wax and/or a polyolefin resin. The biodegradable resin is mainly composed of polylactic acid. Natural candelilla wax or paraffin wax is preferable as the wax. Polyethylene is preferable as the polyolefin resin. Also disclosed are a foam article and a molded container made of such a foam sheet wherein the degree of crystallinity of the biodegradable resin is 10% or more.

Biodegradable resin foam sheet, biodegradable resin foam article and biodegradable resin molded container

A biodegradable resin composition is provided, which is highly transparent with little agglomeration. The biodegradable resin composition comprises a biodegradable polyester resin, a phyllosilicate, and at least one of a polyether phosphate compound, a polar wax and jojoba oil.

Biodegradable resin composition, production method therefor, and product molded or formed therefrom

A biodegradable polyester resin composition which comprises a thermoplastic polymer comprising 100 parts by mass of an aliphatic polyester (A) and 0.01 to 5 parts by mass of a (meth)acrylic ester (B1) and/or a glycidyl ether (B2, and has a gelation index (1) of not lower than 0.1% and a gelation index (2) of not higher than 0.5%.

Biodegradable polyester resin composition, preparation method therefor, and foamed article and molded article produced therefrom

A flame-retardant biodegradable polyester resin composition which comprises 100 parts by mass of a biodegradable polyester resin, 0.01 to 20 parts by mass of a (meth)acrylate compound, and 20 to 200 parts by mass of a metal oxide and/or a metal hydroxide.

Flame-retardant biodegradable polyester resin composition, production method therefor, and product molded/formed therefrom

It is intended to provide a biodegradable polyester resin composition which is excellent in gas barrier properties, mechanical strength and heat resistance and has Theological characteristics advantageously usable in molding a foamed article, etc., a process for producing the same, and a foamed article and a molded article using the same. The biodegradable polyester resin composition contains 100 parts by mass of a biodegradable polyester resin containing 59% mole or more of a hydroxycarboxylic acid unit, 0.01 to 10 parts by mass of a (meth)acrylic acid ester compound and 0.05 to 20 parts by mass of a layered silicate.

Biodegradable polyester resin composition, process for producing the same and foamed article and molded article using the same

An aliphatic polyester resin composition is provided which is excellent in heat resistance, moldability and hydrolysis resistance. The aliphatic polyester resin composition comprises a biodegradable polyester resin (A) essentially including an &#x3b1;- and/or &#x3b2;-hydroxycarboxylic acid unit and crosslinked by at least one crosslinking agent (B) selected from the group consisting of (meth)acrylate compounds and polyvalent isocyanate compounds, wherein some or all of carboxyl groups of the resin (A) are blocked by 0.01 to 20 parts by mass of a terminal blocking agent (C) based on 100 parts by mass of the resin (A).

Aliphatic polyester resin composition, preparation method thereof, and molded article and foamed article produced from the resin composition

A biodegradable resin composition and an object molded or formed from the composition. The resin composition comprises: 100 parts by weight of a biodegradable polyester resin comprising not smaller than 50% by weight of polylactic acid having a melting point of not lower than 160&#xb0; C., the biodegradable polyester resin having a melt flow rate of 0.1 to 50 g/10 min as measured under a load of 21.2 N at 190&#xb0; C.; and 0.1 to 20 parts by weight of a phyllosilicate containing a primary, secondary or tertiary amine salt, a quaternary ammonium salt or a phosphonium salt ionically bonded between layers thereof.

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Uji, Japan

Kazue Ueda