Ube Material Industries, Ltd.

Ube Industries, Inc.

Yamagata University

Ube Materials Industries, Ltd.

Toru Inagaki

Kouichi Fukuda

Jin Amagai

Seiji Noguchi

Masaki Tanaka

Kaoru Takazaki

Akira Ueki

Yuzo Kato

Rika Nogita

Masato Yamauchi

Koichi Fukuda

Ryoichi Nomura

Takuya Shindo

Tetsuo Takayama

Midori Sato

Kazuki Yoshihara

Tatsunori Sakaguchi

Kenji Arima

The polycarbonate resin composition according to the present invention includes: 50 to 90% by mass of polycarbonate resin (A); 2.0 to 20% by mass of olefin polymer (B); 5 to 40% by mass of basic magnesium sulfate (C) selected from fibrous basic magnesium sulfate (C-1) and fan-shaped basic magnesium sulfate (C-2); 0.1 to 8% by mass of at least one (D) selected from a fatty acid metal salt and a fatty acid; and 1 to 20% by mass of elastomer (E).

Polycarbonate resin composition, method for producing the same, masterbatch pellet, and molded body

A basic magnesium sulfate powder according to the present invention has a surface at least partially coated with an inorganic phosphorus compound. The basic magnesium sulfate powder preferably has a phosphorus content of from 0.001 to 5.0 mass %.

Basic magnesium sulfate powder, method for manufacturing basic magnesium sulfate powder, resin composition containing basic magnesium sulfate powder, masterbatch pellet, and molded body

The present invention is a fluorescent material characterized by being represented by a composition of the following formula (1) and having a crystal lattice distortion obtained from a Williamson-Hall plot by X-ray diffraction within the range of 0.0005 to 0.0020.(Sr,Ca,M)MgSiO:Eu&#x2003;&#x2003;formula (1)wherein M is at least one rare earth metal elements selected from the group consisting of Sc, Y, Gd, Tb and La, and 0.01&#x2264;x&#x2264;0.10. Also, the present invention is a light-emitting device including the fluorescent material, and a light source that emits light by irradiating the fluorescent material with excitation light. Furthermore, the present invention is a method for producing the fluorescent material, including the steps of: obtaining an aqueous slurry of a raw material; and spray-drying the aqueous slurry with hot air at 80 to 300&#xb0; C.

Fluorescent material, light-emitting device, and method for producing fluorescent material

The deep red light-emitting magnesium fluorogermanate phosphor prepared by calcining a mixture comprising a fine magnesium oxide powder having a BET specific surface area in the range of 5-200 m/g, a fluorine compound, a germanium compound and a manganese compound gives a light emission having a maximum peak of increased strength in the wavelength region of 640-680 nm upon excitation with a light having a wavelength of 400 nm.

Deep-red light-emitting magnesium fluoro-germanate fluoroescent body and method for producing same

A solid light-emitting device comprising a light-emitting semiconductor element and a phosphor dispersed in a sealant, in which the phosphor is exited by the light emitted by the semiconductor element to emit a visible light of a wavelength differing from that of the light emitted by the semiconductor element and is a silicate phosphor or a phosphor having a hydroxyl group on its surface, and the sealant is a condensation product of a prepolymer produced by condensation of polydimethyl-siloxane having a silanol group at both ends and an oligomer of an alkoxide of a metal or a semimetal or its derivative.

Light-emitting device and organic-inorganic hybrid pre-polymer composition comprising phosphor

A silicate phosphor having a coating layer comprising a fluorine-containing compound on its surface which is obtained by a method of heating a mixture of 100 weight parts of a silicate phosphor and 0.5-15 weight parts of ammonium fluoride at a temperature in the range of 200 to 600&#xb0; C. exhibits high light emission intensity and high moisture resistance.

Silicate phosphor exhibiting high light emission characteristics and moisture resistance, and light emitting device

The emission strength of a light released from a blue light-emitting phosphor having a merwinite crystal structure and an elemental formula of (Sr,Ca)MgSiOactivated with Eu in which a molar ratio of Sr and Ca is in the range of 1:0.10 to 1:0.30 is stable in a wide temperature range.

Blue light-emitting phosphor and light-emitting device using the blue light-emitting phosphor

A green light-emitting silicate phosphor comprising Eu-activated strontium barium silicate which has a crystal phase of magnesium oxide or a merwinite crystal phase and contains 0.15 to 0.90 mol of magnesium per one mol of silicon gives a light emission stable at elevated temperatures.

Green light-emitting silicate phosphor

A blue light-emitting silicate phosphor favorably employable as a blue light-emitting source of a light-emitting apparatus which gives emission of a visible light upon irradiation of ultraviolet rays having a wavelength of 254 nm, such as ultraviolet rays emitted by a fluorescent lamp is produced by a method comprising calcining a powdery mixture comprising a magnesium oxide powder, an MeO source powder, a EuO source powder and a SiOsource powder, said magnesium oxide powder having a purity of 99.9 wt. % or higher and a BET specific surface area in the range of 3 to 60 m/g and having been prepared by bringing a metallic magnesium vapor into contact with oxygen whereby oxidizing the metallic magnesium vapor.

Silicate-based blue light-emitting phosphor and method for producing same

A blue light-emitting phosphor having an elemental formula of SrMgSiO:Eu(wherein x represents a value in the range of 0.008 to 0.110), a merwinite crystal structure and a crystal lattice strain of 0.080% or less as determined from an X-ray diffraction pattern at diffraction angle 2&#x3b8; of 20-130&#xb0; by the Le Bail method, wherein the X-ray diffraction pattern is determined using a CuK&#x3b1; ray having an incident angle of &#x3b8;, is used advantageously as a blue light-emitting material for a light-emitting device which comprises a semiconductor light-emitting element capable of emitting a light having a wavelength of 350-430 nm upon application of an electrical current, such as a white light-emitting LED lamp, and a blue light-emitting material capable of emitting a blue light upon excitation with a light emitted by the semiconductor light-emitting element.

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Ube, Japan

Toru Inagaki