Daicel Corporation

Polyplastics Co., Ltd.

Daicel Value Coating Ltd.

Keiichi Osano

Yoshimichi Okano

Takayuki Yaegashi

Takeshi Yagi

Kouichi Sakata

Kazuya Goshima

Kouichi Umemoto

Kanae Nishimura

Kazuyuki Okada

A manufacturing method for a thermoplastic aromatic polyester resin composition is disclosed having a step of blending: a thermoplastic aromatic polyester resin A; an alkali composition B containing a thermoplastic aromatic polyester resin a and an alkali compound b; and a carbodiimide compound C. The alkali composition B is preferably a composition in which an aqueous solution of the alkali compound b is melt-kneaded with the thermoplastic aromatic polyester resin a. The carbodiimide compound C preferably contains an aromatic carbodiimide compound. The alkali compound U content in the thermoplastic aromatic polyester resin composition is preferably 10 ppm by mass or more and 100 ppm by mass or less.

Production method of thermoplastic aromatic polyester resin composition

A polybutylene terephthalate resin composition containing a polybutylene terephthalate resin, a silicone-based compound having a kinematic viscosity at 25&#xb0; C. of 1,000 to 10,000 cSt in an amount of 0.5 to 1.8% by mass of the total mass of the polybutylene terephthalate resin composition, and an olefin-based elastomer in an amount of 5 to 20% by mass of the total mass of the polybutylene terephthalate resin composition.

Polybutylene terephthalate resin composition and molded article

A polymer film comprises a polymer composition containing (A) a cyclic olefin polymer containing an olefin unit having a Calkyl group as a side chain thereof and (B) a chlorine-containing polymer. The chlorine-containing polymer (B) may comprise a vinylidene chloride-series polymer. The ratio of the chlorine-containing polymer (B) relative to 100 parts by weight of the cyclic olefin polymer (A) may be 0.5 to 60 parts by weight. The film has a moderate releasability from an electrolyte membrane and an electrode membrane of a polymer electrolyte fuel cell and a moderate adhesion to the electrolyte membrane and the electrode membrane and can adhere to a commonly-used substrate film without interposition of an adhesive layer such as an easily adhesive layer. The film is thus suitable as a release film for producing a membrane electrode assembly of a polymer electrolyte fuel cell.

Resin film, laminate, method for producing same, and method for producing fuel cell

Provided is a film, sheet, plate, or other such formed article having excellent transparency made of a copolymer obtained from a cyclic olefin monomer and an &#x3b1;-olefin monomer. The present invention provides a formed article made from a copolymer having Tg of 170&#xb0; C. or higher and an Al content of 50 ppm or less that is a copolymer including a structural unit of a cyclic olefin monomer (A) derived from norbornene and a structural unit of a monomer (B) derived from at least one C4-C12 &#x3b1;-olefin.

Formed article

Growing community of inventors

Fuji, Japan

Keiichi Osano