Kureha Kagaku Kogyo Kabushiki Kaisha

Hiroaki Satoh

Masaru Hiruta

Yoshikazu Kokubu

Kiyoshi Kitagawa

Isao Okazaki

Kouichi Gomikawa

Yasuyuki Tabata

Pipes of polypropylene reinforced with carbon fibers comprising 100 parts by weight of polypropylene, 10 to 40 parts by weight of a modified polypropylene by an organic unsaturated carboxylic acid or a copolymer of propylene and the organic unsaturated carboxylic acid and 5 to 70 parts by weight of carbon fibers of 5 to 30 micrometers in diameter and a ratio of diameter to length of 10 or more. The rate of retention of the original tensile strength of pipe in boiling water for 6 months at 100.degree. C. was higher than 95%.

Pipes made of polypropylene reinforced with carbon fibers

The present invention relates to a tower for drying gaseous chlorine, in which a high polymeric composite material containing carbon fibers and electroconductive carbon black as the whole or a part of the reinforcing material and the material for giving electroconductivity is used as a wall material thereof for removing static electricity generating within the tower.

Tower for drying gaseous chlorine

An electroconductive resin composite material for molding having excellent mechanical strength and electrical properties. The resin comprises 100 parts by weight of polypropylene, from 10 to 50 parts by weight of a modified polypropylene obtained either by chemically modifying polypropylene with an organic unsaturated carboxylic acid or by copolymerizing propylene and the organic unsaturated carboxylic acid, from 5 to 65 parts by weight of carbon fiber having a diameter of 5 to 20 micrometers, the ratio of length to diameter of the fiber being not less than 10, and from 5 to 65 parts by weight of electroconductive carbon black, the specific surface area being at least 800 m.sup.2 /g.

Electroconductive resin composite material for molding

The invention resides in an electrolytic cell element representing a frame structure defining partially an anode chamber and a cathode chamber. The frame is composed of a carbon fiber-high polymer composite material.

Growing community of inventors

Tokyo, Japan

Hiroaki Satoh