Mitsubishi Kinzoku Kabushiki Kaisha

Mitsubishi Materials Corporation

Nippon Oil Company

Mitsubishi Metal Corporation

Mitsubishi Materials Electronic Chemicals Co., Ltd.

Motohiko Yoshizumi

Akira Sano

Kazuo Matsuura

Hideo Arai

Sadaaki Haghino

Yumi Akimoto

Tamotsu Ishii

Hisahiko Suyama

Hiroki Hirata

Akira Nishihara

Tadashi Nakamura

Akira Nakabayashi

Nobuya Takenuki

Hisae Hirako

Hideshi Ajimura

Kazuo Mtsuura

Shinichiro Kobayashi

Daisuke Shibuta

An infrared ray cut-off material is formed of phosphorus-doped antimony tin oxide powder, in which a content of antimony in terms of SbOis not less than 14 parts by mass and not more than 30 parts by mass with respect to 100 parts by mass of the infrared ray cut-off material, a content of phosphorus in terms of POis not less than 1 part by mass and not more than 25 parts by mass with respect to 100 parts by mass of the infrared ray cut-off material, and a balance other than antinomy oxide and phosphorus oxide is tin oxide.

Infrared ray cut-off material, dispersion of infrared ray cut-off material, infrared ray cut-off film-forming composition, and infrared ray cut-off film

A process for production of a fine alpha-alumina powder having a specific surface area of not smaller than 10 m.sup.2 /g and superior polishing characteristics is provided, the process comprising heat-treating a mixture of gamma-alumina powder and silica at a temperature at which gamma-alumina is converted to alpha-alumina in the presence of silica, wherein the mixture contains not more than about 10 wt % of silica, based on the weight of the gamma-alumina.

Process for production of fine .alpha.-alumina powder

A novel process for producing highly crystalline, fine .alpha.-alumina is disclosed. Aluminum hydroxide is calcined in the presence of fine silica powder. The obtained alumina is in the alpha form and has a specific surface area of least 10 m.sup.2 /g.

Process for producing a highly crystalline, fine .alpha.-alumina powder

A superconductive resin material comprising a resin matrix in which 70-90% by weight on the basis of the total composition of a superconductive compound metal oxide powder is homogeneously dispersed is disclosed.

Superconductive resin material

A polyethylene resin composition comprising: (A) 50-99.9 parts by weight of an ethylene polymer; and (B) 0.1-50 parts by weight of a modified ethylene-.alpha.-olefin copolymer obtained by fluorinating an ethylene-.alpha.-olefin copolymer having the following properties (i) to (iv), said ethylene-.alpha.-olefin copolymer being prepared by copolymerizing ethylene with an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid catalyst component and an organoaluminum compound, said catalyst component containing at least magnesium and titanium:

Polyethylene resin composition

A modified olefinic polymer is obtained by fluorinating an ethylene/.alpha.-olefin copolymer having the following properties (i) to (iv), said ethylene/.alpha.-olefin copolymer being prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid catalyst component and an organoaluminum compound, said solid catalyst component containing at least magnesium and titanium:

Fluorinated ethylene/alpha-olefin copolymers

A polyethylene resin composition comprising (A) 50-99.9 parts by weight of an ethylene polymer and (B) 0.1-50 parts by weight of a modified ethylene polymer obtained by fluorinating an ethylene polymer having a density in the range of larger than 0.910 g/cm.sup.3 and 0.970 g/cm.sup.3 ; said ethylene polymer being prepared by polymerizing ethylene in the presence of a catalyst comprising a catalyst component containing at least one member selected from the group consisting of a titanium compound, vanadium compound and chromium compound, and optionally an organoaluminum compound.

This invention relates to a process for preparing a titanium oxide powder comprising heating titanium dioxide powder in an atmosphere of ammonia gas at a temperature of about 500.degree. C. to about 950.degree. C. The product powder is very fine, highly uniform in particle size and useful as an electrically conductive material. The powder is colored blue to black depending upon the process conditions and therefore is useful as a pigment, too.

Process for preparing a titanium oxide powder

By pouring a solution containing hydrolyzable tin and antimony salts into an aqueous dispersion of titanium oxide particles and mixing, the salts are caused to hydrolyze, whereby a uniform and strongly adherent coating layer of antimony-containing tin oxide is formed on the surface of each particle of the titanium oxide. The coated powder thus obtained is non-hygroscopic and non-toxic and exhibits stable electroconductivity. Furthermore, since it can possess excellent whiteness, it is suitable for forming the electroconductive layers of electro-thermosensitive papers and electrostatic recording papers, for use as the antistatic agent of resins, and for other uses.

Electroconductive powder and process for production thereof

An antimony-containing tin oxide wherein the content of antimony is 0.1 to 20% by weight is almost white and excels in electric conductivity. By mixing a powder of this antimony-containing tin oxide of a particle size of 0.4 .mu.m or less with a binder resin in a specific ratio, an antistatic coating composition can be obtained. By applying this coating on nonconductive base materials such as electronic/electrical parts and building members, an antistatic effect can be imparted to these base materials without impairing their color tones.

Antistatic transparent coating composition

A ferrite for magnetostrictrive vibrators is produced by the simple process of press forming a preformed structure formed from starting powder of magnetite or a mixture of magnetite and ferric oxide, said powder having an average particle size d (.mu.) of from 0.02 to 5.0 .mu., sintering this structure in an atmosphere wherein the partial pressure of oxygen is from 10.sup.-1 to 10.sup.-11 atmosphere at a temperature of from 1,000.degree. to 1,350.degree. C. and which will meet the requirement:

Production of ferrites for magnetostrictive vibrators

A method for generating magnetostrictive vibration which comprises:

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Omiya, Japan

Motohiko Yoshizumi