Mitsui Mining Co., Ltd.

Limited and Kajima Corporation

Koji Sakata

Kouji Sakawaki

Kazuhiko Hanashita

Yoshikazu Taniguchi

Yoshikazu Takei

Shigeru Kanamaru

Toshiyuki Nawa

Kozo Toyama

Tatsuo Suenaga

A method for preparing a carbon fiber-reinforced cement material is here disclosed which comprises the step of using, as a reinforcing material, a carbon fiber from which a gas has been removed by replacing the gas captured in the fiber with water. This method permits providing the carbon fiber-reinforced cement material having a large reinforcing effect by the fiber.

Carbon fiber-reinforced cement material and method for preparing same

Disclosed is a process for producing carbon materials which comprises the steps of preparing a raw material composition by mixing a methylene type linkage-containing condensation product of an aromatic sulfonic acid or a salt thereof with a solvent, the condensation product having been formed by means of a linkage of the formula

Process for producing carbon materials

Sulfo-group-containing heat-resistant high-molecular material and a

Growing community of inventors

Kitakyushu, Japan

Koji Sakata