Jsr Corporation

Honda Motor Co., Ltd.

Igor Rozhanskii

Yoshitaka Yamakawa

Kohei Goto

Makoto Higami

Mayumi Kakuta

Nagayuki Kanaoka

Hiroshi Shinkai

Kaoru Fukuda

Ryoichiro Takahashi

Masayuki Takahashi

Toshiaki Kadota

Keiji Konno

Yousuke Konno

Toshiyuki Akiike

Toshihiro Ohtsuki

Minoru Matsubara

Yasutake Inoue

Tadahiro Shiba

Provided is a varnish which contains a solvent and an electrode electrolyte for a solid polymer fuel cell electrolyte, which contains a polymer with a structure having a main chain including a polyphenylene, a side chain including a sulfonic acid group and a repeating structural unit as a side chain including a nitrogen-containing heterocyclic group.

Varnish for a solid polymer fuel cell

The present invention provides an electrode paste which comprises catalyst particles, a solvent and an varnish which comprises a solvent and an electrode electrolyte for a solid polymer fuel cell electrolyte, wherein the electrode electrolyte comprises a polymer with a structure having a main chain including a polyphenylene, a side chain including a sulfonic acid group and a repeating structural unit represented by formula (C) as a side chain including a nitrogen-containing heterocyclic group; wherein the structural variables are defined herein.

Polyphenylene-containing electrode paste

A nitrogen-containing aromatic compound is represented by Formula (1). A polymer is obtained by polymerizing the compound. wherein X is an atom or a group selected from halogen atoms other than fluorine and &#x2014;OSORb (wherein Rb is an alkyl group, a fluorine-substituted alkyl group or an aryl group); Y is at least one structure selected from the group consisting of &#x2014;CO&#x2014;, &#x2014;SO&#x2014;, &#x2014;SO&#x2014;, &#x2014;CONH&#x2014;, &#x2014;COO&#x2014;, &#x2014;(CF)&#x2014; (wherein l is an integer of 1 to 10) and &#x2014;C(CF)&#x2014;; Z is at least one structure selected from the group consisting of a direct bond, &#x2014;O&#x2014; and &#x2014;S&#x2014;; Ris a nitrogen-containing heterocyclic group; q is an integer of 1 to 5; and p is an integer of 0 to 4.

Nitrogenated aromatic compound, process for production of the same, polymer, and proton conductive membrane

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

A polyarylene copolymer which comprises (A) aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) aromatic compound units having a main chain containing no electron-withdrawing groups therein, and a proton-conductive membrane comprising the polyarylene copolymer having sulfonic acid groups.

Polyarylene copolymers and proton-conductive membrane

A polyarylene copolymer which comprises (A) from 60 to 3 mol % aromatic compound units having a main chain containing one or more electron-withdrawing groups therein and (B) from 40 to 97 mol % aromatic compound units having a main chain containing no electron-withdrawing groups therein (provided that (A)&plus;(B)&equals;100 mol %), and a proton-conductive membrane comprising the polyarylene copolymer having sulfonic acid groups.

The present invention is a process for producing a phenylene-containing polymer in the presence of a catalyst system containing a transition metal compound, and a film-forming material comprising the phenylene-containing polymer.

Process for producing phenylene-containing polymer and film-forming material

Electronic parts and a process for manufacturing the electronic parts are provided. The electronic parts comprise an electric insulating material exhibiting a high heat resistance and low dielectric constant as a structural component. The electric insulating material is formed of a polyimide containing a recurring unit represented by the following general formula (1). ##STR1##

Growing community of inventors

Chuo-ku, Japan

Igor Rozhanskii