Agency of Industrial Science and Technology

Toray Industries, Inc.

Toray Engineering Company, Limited

Toray Thiokol Company Limited

Akio Takahashi

Jun Tsukamoto

Kiichiro Matsumura

Takashi Taniguchi

Tatsumi Arakawa

Tadami Kamaishi

Hideaki Tanisugi

Hiroyoshi Kuramoto

Tetsu Takeyama

Keiya Kitagawa

Shu Kambara

Keiichi Minami

A concrete article having a mixture layer comprising concrete and a polysulfide-modified epoxy resin as an intermediate layer between a concrete body and a cured layer of a polysulfide-modified epoxy resin, which concrete article is excellent in corrosion resistance, durability and workability, and shows good adhesion to the concrete body and to the cured layer of the polysulfide-modified epoxy resin. This concrete article can be produced by applying a coating composition containing the polysulfide-modified epoxy resin to the concrete body in an uncured state.

Concrete article and method of producing same

A polyacetylene film having a high electroconductivity is prepared by (a) heating a Ziegler-Natta catalyst at a temperature not lower than 150.degree. C. in an organic solvent and then, cooling the catalyst-solvent mixture, (b) removing coarse catalyst particles having a diameter of larger than 1 .mu.m from the catalyst-solvent mixture by filtration to form a catalyst dispersion for polymerization, (c) introducing acetylene into the catalyst dispersion to effect polymerization of acetylene, and (d) drawing the formed polymer and treating the drawn polymer with a dopant.

Process for preparation of polyacetylene film

The present invention provides a process for producing carbon dichalcogen polymers having a conductivity of about 10.sup.-8 S/cm without doping treatment which is increased to 10.sup.-4 to 10.sup.-2 S/cm by doping, by polymerizing carbon dichalcogenide monomers (carbon disulfide, carbon diselenide, etc.) in the form of a solution thereof under a low pressure in the presence of an anionic catalyst.

Process for producing carbon dichalcogenide homopolymer and homopolymer

A highly electroconductive graphite continuous filament is described, which is composed of a carbon filament as a substrate and a graphite layer having a layer spacing d (0,0,2) of not larger than 3.363 angstroms as an outer skin layer The graphite continuous filament is prepared by depositing easily graphitizable carbon on the substrate and heat-treating the carbon-deposited substrate at a temperature of at least 2,500.degree. C.

Highly electroconductive graphite continuous filament and process for

An insoluble infusible electroconductive polymer is provided, which is derived from an organic compound having 3 to 6 carbon atoms and having a cyano group and an ethylenically or acetylenically unsaturated bond by mutually reacting this compound at an elevated temperature.

Electroconductive polymer and process for preparation thereof

A highly electroconductive graphite continuous filament is described, which is composed of a carbon filament as a substrate and a graphite layer having a layer spacing d (0,0,2) of not larger than 3.363 angstroms as an outer skin layer. The graphite continuous filament is prepared by depositing easily graphitizable carbon on the substrate and heat-treating the carbon-deposited substrate at a temperature of at least 2,500.degree.C.

A novel polyvinylene chalcogenide of the formula: --CH.dbd.CH--L).sub.n wherein L is S or Se, is provided. This compound is prepared by reacting an ethylene dihalide of the formula: XHC.dbd.CHX' (X and X' are selected from F, Cl, Br and I) with an alkali metal chalcogenide or bichalcogenide.

Polyvinylene sulfide and polyvinylene selenide

Sulfur oxides are removed from waste gases containing the same by scrubbing the waste gas with an aqueous scrubbing solution containing the aluminate of sodium, potassium or ammonium and an additional compound selected from the group consisting of aluminum sulfate and alum.

Growing community of inventors

Kusatsu, Japan

Akio Takahashi