Sumitomo Chemical Company, Limited

Japan Exlan Company Limited

Fuji Jukogyo Kabushiki Kaisha

Toyo Boseki Kabushiki Kaisha

Hexcel Corporation

Mitsui Co., Ltd.

Shirouma Science Co., Ltd.

Noboru Oyama

Kunio Maruyama

Koji Tanaka

Shiro Hamamoto

Shigeru Sawanishi

Akira Sugiura

Shuichiro Yamaguchi

Shinji Miyakawa

Ryuichi Koide

Akira Okazaki

A polymer gel electrolyte composition includes a crosslinked polymer network matrix having a three-dimensional crosslinked structure that includes a solution of an electrolyte in a non-aqueous solvent, and a non-crosslinked polymer included within the crosslinked polymer network matrix. The non-crosslinked polymer includes (a) an ethylene unit and/or propylene unit, and (b) an unsaturated carboxylic acid unit having a carboxyl group esterified by a polyalkylene glycol having one terminal hydroxyl group protected.

Polymer gel electrolyte composition and method of producing the same

This invention includes a polyelectrolytic gel comprising a polymer component and a nonaqueous solvent, characterized in that the polymer component is a crosslinked polymer having nitrogen-containing cationic functional group or a mixture of a non-crosslinked polymer having nitrogen-containing cationic functional group and a crosslinked polymer free of nitrogen-containing cationic functional group, the polymer component being swollen with the nonaqueous solvent containing an electrolyte dissolved therein. The electrolytic gel of the invention is excellent in heat resistance and durability and also in electroconductivity, especially ion conductivity.

Polyelectrolytic gel

A finish composition for a precursor for high-performance carbon fibers, containing (1) 0.2-10 parts by weight of an aminocarboxylic material selected from the group consisting of carboxylic acid salts of alkylamines, carboxylic acid salts of arylamines, carboxylic acid salts of alkylarylamines, amino acids and betaine compounds, and (2) 100 parts by weight of a mixture of (a) 80-20 parts by weight of a finish prepared by adding, to (i) a silicone finish containing 50 wt % or more of an amino-modified polysiloxane having a nitrogen content in amino groups in the range of 0.05-2.0 wt % and a viscosity at 25.degree. C. of 500 centistokes or more, (ii) 0.3-5.0 molar equivalents of a lower aliphatic monocarboxylic acid of 6 carbon atoms or less with respect to 1 mole of the amino group, and (b) 20-80 parts by weight of a nonionic emulsifier consisting mainly of a polyoxyethylene alkyl ether, a polyoxyethylene alkylaryl ether or a polyoxyethylene fatty acid ester. The finish composition prevents aging of a precursor during its preservation. Also provided is an acrylonitrile precursor for high-performance carbon fibers on which the finish composition is deposited.

Finishing oil for precursor for high performance carbon fibers and

A process for producing a carbon fiber tow from an acrylic fiber tow wherein the acrylic fiber tow is treated to uniformily contain throughout the two (1) an aminosiloxane and (2) a chemical substance selected from glycerine, an alkylene glycol, and a polyalkylene glycol prior to heat-treating said acrylic fiber tow to produce the carbon fiber tow whereby problems such as fluffiness, spreading, and filament breakage are diminished.

Process for producing carbon fiber tows

A method for the continuous production of carbon fibers from two or more cheese-like articles of organic polymer fibers having yarn ends at the top portion and tail portion, characterized by preliminarily heat-treating the yarn ends of each cheese-like article, connecting the tail end of a cheese-like article with the top end of another cheese-like article in such a manner that connecting loop portions and knot portions are disposed at different positions, and thereafter causing the yarn to pass through heat-treating furnaces.

Process for producing carbon fibers

A process is provided for producing carbon fibers characterized by fixing a specified amount of a chemical substance onto thermally stabilized fibers and/or carbonized fibers to impart good collectivity and then carbonizing and/or graphitizing the fibers, said chemical substance selected from one or more of the compounds of glycerin, polyethylene glycol, polypropylene glycol and alkyl derivatives thereof.

Process for the production of carbon fibers

The present invention relates to a process for producing carbin fibers which involves thermally stabilizing and carbonizing or graphitizing acrylic fibers containing 0.1-5 weight %, based on the weight of the fibers, of a straight chain silicone substance and further containing 0.1-5 weight %, based on the weight of the fibers, of a chemical substance which is selected from glycerine, polyethylene glycol, polypropylene glycol, alkyl derivatives thereof, and mixtures or compounds of two or more of these substances, and which generates only a residue less than 5 weight % under the action of heat at 240.degree. C. for one hour. According to applicant's invention, such problems as fluffiness, spreading, filament breakage etc. can be greatly reduced and it is possible to produce fibers free from agglutination or fusion and having high strength and high modulus of elasticity by heat-treatment in a short time.

Growing community of inventors

Okayama, Japan

Kunio Maruyama