Daicel Corporation

Daicel Value Coating Ltd.

Yoshimichi Okano

Takayuki Yaegashi

Keiichi Osano

Kanae Nishimura

Kazuyuki Okada

Fei Yang

Takeshi Yagi

Feng Liu

Kouichi Umemoto

Michiyo Nakai

Tsukasa Yoshida

Katsuhiko Sumita

Kouji Nakatani

Yusuke Okamoto

Hiroshi Onomichi

Ken Suzuki

There is provided a curable compound having good solvent solubility and being capable of forming a cured material having super heat resistance. The curable compound according to the present invention is represented by the following formula (1). In the formula (1), Rand Reach represent a curable functional group; Dand Deach represent a single bond or a linking group; and L represents a divalent group having a repeating unit containing a structure represented by the following formula (I) and a structure represented by the following formula (II) (wherein Arto Areach represent a group made by eliminating two hydrogen atoms from a structural formula of an aromatic ring or a group made by eliminating two hydrogen atoms from a structural formula in which two or more aromatic rings are bound through a single bond or a linking group; X represents &#x2014;CO&#x2014;, &#x2014;S&#x2014; or &#x2014;SO&#x2014;; each Y represents &#x2014;S&#x2014;, &#x2014;SO&#x2014;, &#x2014;O&#x2014;, &#x2014;CO&#x2014;, &#x2014;COO&#x2014; or &#x2014;CONH&#x2014;; and n represents an integer of 0 or more): 

Curable compound

A release layer of a release film for producing a membrane electrode assembly of a polymer electrolyte fuel cell comprises a cyclic olefin polymer comprising an olefin unit having a Calkyl group as a side chain thereof. The release layer may have a glass transition temperature of about 210 to 350&#xb0; C. The release layer may have a transition point of a dynamic storage modulus E' in a range from &#x2212;50 to 100&#xb0; C. An ion exchange layer comprising an ion exchange polymer may be laminated on the release layer of the release film by a roll-to-roll processing to produce a laminate. The release film may be separated from the laminate to give the membrane electrode assembly. The release film achieves improved production of a membrane electrode assembly (an electrolyte membrane and/or an electrode membrane) of a polymer electrolyte fuel cell.

Release film, laminate and method for manufacturing same, and method for manufacturing fuel cell

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

Himeji, Japan

Yoshimichi Okano