Jsr Corporation

Honda Motor Co., Ltd.

Toshihiro Ohtsuki

Nagayuki Kanaoka

Masaru Iguchi

Naoki Mitsuta

Hiroshi Sohma

Kohei Goto

Yoshitaka Yamakawa

Toshiaki Kadota

Masayuki Takahashi

Hiroshi Shinkai

Kaoru Fukuda

Ryoichiro Takahashi

Hiroshi Soma

Junji Kawai

Yousuke Konno

Masayuki Sekiguchi

Igor Rozhanskii

Tatsuya Hirono

Teruhiko Umehara

Takatoshi Ishigaki

Takanobu Yamamoto

Satoshi Komatsu

The present invention provides an electrode catalyst layer comprising catalyst particles, an ion exchange resin and a water repellent agent. The water repellent agent contains (A) a fluorine-containing copolymer having a structure unit derived from a polyfluoroalkyl-containing (meth)acrylate and/or (B) a fluorine-containing copolymer having a structural unit represented by derived from a fluorine-containing olefin monomer and a structure unit represented derived from a vinyl ether monomer. The electrode catalyst layer contains 0.1 to 20% by weight of the water repellant agent. The electrode catalyst layer exhibits excellent balance between water retention and drainage in an electrode, good power generation performance under any of low humidity and high humidity conditions, and also excellent durability in power generation.

Electrode catalyst layer

Disclosed is a polymer electrolyte having a protonic acid group that is excellent in thermal stability and dimensional stability. The polymer electrolyte includes copolymers having a sulfonic acid group which has a structure represented by the following formula: wherein X is a divalent electron-withdrawing group; Y is an oxygen or a sulfur; Z and Q are each a direct bond, &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;CO&#x2014;, &#x2014;SO&#x2014;, &#x2014;[C(R')]&#x2014; (g: integer of from 1 to 8), etc.; R, R&#x2032; and Rto Rare each a hydrogen, a fluorine, an alkyl, a fluorine-substituted alkyl, an aryl or a nitrile; m, n, p, q, r, s, t and u are each an integer of from 0 to 4 (with the proviso that p+q&#x2267;1); and A is a group represented by Formula (5) or (5) below: wherein W is a divalent electron-withdrawing group; S is a protonic acid group; i is an integer of from 1 to 5; and j is an integer of from 1 to 7.

Solid polymer electrolyte, proton conductive membrane, electrode electrolyte, electrode paste and membrane-electrode assembly

Disclosed is an aromatic sulfonic acid ester derivative represented by the formula (1); in the formula, X is an atom or a group selected from a halogen atom excluding fluorine, &#x2014;OSOCHand &#x2014;OSOCF, A is a divalent electron attractive group, B is a divalent electron donating group or a direct bonding, Ris a hydrocarbon group of 1 to 20 carbon atoms, Ar is an aromatic group having a substituent of &#x2014;SOR(wherein Ris a hydrocarbon group of 1 to 20 carbon atoms), m is an integer of 0 to 10, n is an integer of 0 to 10 and k is an integer of 1 to 4. Also disclosed is a process for producing a polyarylene having a sulfonic acid group, which process comprises the steps of coupling polymerization of an aromatic compound containing the derivative of the formula (1), to prepare a polyarylene and hydrolysis of the polyarylene, and which process has high safety and is easily capable of controlling the amount of sulfonoc acid group introduced into a polymer and the introducing position thereof.

Aromatic sulfonic acid ester derivative, polyarylene, polyarylene having sulfonic acid group and process for producing the same, and polymer solid electrolyte and proton-conductive membrane

Described herein is a production method of sulfonated polyarylene that is safe and enables easy control of the amount and position of sulfonic groups introduced in the polymer. The sulfonated polyarylene is also disclosed. The invention further provides a polyarylene and an aromatic sulfonate derivative that are suitably employed in the above production method. Also provided are a macromolecular solid electrolyte that comprises the sulfonated polyarylene, and a proton conductive membrane. The aromatic sulfonate derivative has the following formula (1): wherein X is a halogen atom other than fluorine, a &#x2014;OSOCHgroup or a &#x2014;OSOCFgroup; Y is a divalent organic group; A is &#x2014;(CH)&#x2014; or &#x2014;(CF)&#x2014; (wherein m is an integer of 1 to 10); and R is a Chydrocarbon group. The production method of sulfonated polyarylene comprises coupling polymerization of an aromatic compound that includes at least the aromatic sulfonate derivative of the formula (1) and hydrolysis of the resultant polyarylene.

Aromatic sulfonate derivative, polyarylene, sulfonated polyarylene and production method thereof, macromolecular solid electrolyte, and proton conductive membrane

To provide a sulfonic acid group-containing polymer having improved hot water resistance and radical resistance (durability), a solid polymer electrolyte including the polymer, and a proton-conducting membrane including the electrolyte, the polymer electrolyte includes a sulfonated product of a polymer shown by the following general formula (I):wherein X, Y, and Z are bonded randomly, alternately, or in blocks, y represents an integer of two or more, and each of x and z represents an integer of zero or more, where x+z&#x3e;2.

Polymer electrolyte and proton-conducting membrane

Provided is an optical molding material comprising a cyclic polyolefin resin having a glass transition temperature (Tg) of 120&deg; C. to 170&deg; C., wherein the melt viscosity of the resin at 260&deg; C. is 5,000 to 50,000 poises as measured at a shear rate of 10 sec and 200 to 1,000 poises at a shear rate of 10,000 sec , and the melt viscosity of the resin at 320&deg; C. is 500 to 5,000 poises at a shear rate of 10 sec and 100 to 800 poises at a shear rate of 10,000 sec . An optical molding material comprising a cyclic polyolefin resin, an optical molded product and an optical disk substrate, wherein a variation range of retardation of the resin is within &plusmn;10% of the retardation at 590 nm when the wavelength is changed from 400 nm to 830 nm, are provided. The material is molded into, for example, the optical disk substrate. A method for producing an optical disk substrate comprises injection-molding a thermoplastic resin comprising a cyclic polyolefin resin under conditions of a resin temperature of (Tg&plus;100)&deg; C. to 400&deg; C., a mold temperature of (Tg&minus;100)&deg; C. to (Tg&minus;5)&deg; C., a shear rate of 4&times;10 to 1&times;10 sec and average residence time of the resin in a molding machine of 5 to 200 seconds. The cyclic polyolefin resin is preferably composed of a norbornene derivative.

Optical molding material, and optical disk substrate and production method thereof

Growing community of inventors

Tokyo, Japan

Toshihiro Ohtsuki