Nitto-denko Corporation

Junichi Nakazono

Noboru Masutani

Masakazu Sugimoto

Masao Nakamura

Toshihiko Tomita

Toshiaki Iwamoto

Toshihiko Shinomura

A semiconductive belt comprising a polyimide film having a volume resistivity of 10,&OHgr;cm to 10,&OHgr;cm and a surface resistivity of 10,&OHgr; to 10,&OHgr; at 25&deg; C. and 60% RH, wherein the amount of change of the surface resistivity between 30&deg; C. and 85% RH and 10&deg; C. and 15% RH in terms of common logarithm being is 1.0 or smaller.

Semiconductive belt

A process for producing a polytetrafluoroethylene molded article by isostatic molding is disclosed, the isostatic molding being conducted under a high pressure of from 1,500 to 10,000 kg/cm.sup.2. The resulting molded article is isotropic as regards coefficient of thermal expansion and exhibits improved frictional resistance.

Process for producing polytetrafluoroethylene molded article

A sliding member comprising a fluorine resin and carbon fibers treated with a fluorine-containing silane modifying agent represented by the formula R.sup.1 -SiX.sub.3 wherein R.sup.1 represents an alkyl group having from 1 to 10 carbon atoms, a part or the whole of the hydrogen atoms of which are replaced with fluorine atoms and X represents a hydrolyzable group or a chlorine atom.

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Osaka, Japan

Junichi Nakazono