Harima Chemicals, Incorporated

Kureha Corporation

Mitsubishi Electric Corporation

National Institute of Advanced Industrial Science and Technology

Toshiba Corporation

Sijtechnology, Inc.

Daisuke Itoh

Yorishige Matsuba

Noriaki Hata

Takashi Sato

Masayuki Ueda

Akihito Izumitani

Satoshi Azuma

Kazuhiro Murata

Hiroshi Yokoyama

Takuo Kikuchi

Satoru Suzuki

Kengo Sugahara

Kazuki Tateyama

Masao Segawa

Masataka Yabuuchi

Hisanori Tobita

Naoto Shioi

Katsuhisa Osako

Hideyuki Gotoh

Norio Ozawa

Naoko Tohmiya

Yasunari Ukita

The present invention provides a process for simply and easily producing fine metal particles or fine metal oxide particles in the form of a dry powder which can be used as extremely fine particles in a good dispersion state without causing coagulation for a long time even if not stored in a dispersion solvent. Fine metal particles or fine metal oxide particles in the form of a dry powder are prepared using a dispersion in which fine metal particles or fine oxide metal particles having a surface oxidation film are dispersed in an organic solvent in a stable state, while once covering the particle surface with covering agent molecules containing, at a terminal, a functional group having an oxygen atom, a nitrogen atom, or a sulfur atom as a group capable of forming a coordinative bond with metal, and by removing the dispersion solvent, washing and removing excess covering agent molecules with a polar solvent without damaging the covering agent molecule layer covering the fine particle surface, finally evaporating the polar solvent used for washing and drying.

Fine metal particles and fine metal oxide particles in dry powder form, and use thereof

To provide polyglycolic acid resin compositions having excellent moldability, and high barrier properties and transparency after molding, and molded articles therefrom. According to the present invention, a polylactic acid having a mass average molecular weight Mw of 100000 to 1000000 is added to a polyglycolic acid having a mass average molecular weight Mw of 100000 to 1000000 in a content of the polylactic acid of 5 to 30% by mass, and the mixture is melt-kneaded under, for example, a temperature condition of 230 to 270&#xb0; C., thereby obtaining a resin composition having a temperature-lowering crystallization peak temperature Tc, measured by differential scanning calorimetry, of 3 to 18&#xb0; C. lower than that of a polyglycolic acid only.

Polyglycolic acid resin composition and molded article therefrom

According to the present invention, a metal nanoparticle dispersion suitable to multiple layered coating by jetting in the form of fine droplets is prepared by dispersing metal nanoparticles having an average particle size of 1 to 100 nm in a dispersion solvent having a boiling point of 80&#xb0; C. or higher in such a manner that the volume percentage of the dispersion solvent is selected in the range of 55 to 80% by volume and the fluid viscosity (20&#xb0; C.) of the dispersion is chosen in the range of 2 mPa&#xb7;s to 30 mPa&#xb7;s, and then when the dispersion is discharged in the form of fine droplets by inkjet method or the like, the dispersion is concentrated by evaporation of the dispersion solvent in the droplets in the course of flight, coming to be a viscous dispersion which can be applicable to multi-layered coating.

Metal nanoparticle dispersion usable for ejection in the form of fine droplets to be applied in the layered shape

The object is to effectively reduce the resonant current flowing inside a converter unit and an inverter unit in a power conversion apparatus for an electric vehicle. The power conversion apparatus includes a converter unit that converts an alternating-current power into a direct-current power, an inverter unit that converts the direct-current power into an intended alternating-current power and supplies the intended alternating-current power to an electric motor that drives an electric vehicle, a housing that accommodates the converter unit and the inverter unit and a part of which is connected to ground, and a magnetic core that is disposed inside the housing and that suppresses the resonant current flowing between the converter unit and the inverter unit.

Power conversion apparatus for electric vehicle

A multilayer blow molded container having a layer structure that a polyglycolic acid layer is provided as a core layer, and thermoplastic polyester resin layers are arranged as inner and outer layers, wherein the core layer formed of the polyglycolic acid layer is not present between the inner and outer layers in at least part of an opening end portion of the container, and the core layer formed of the polyglycolic acid layer is not present between the inner and outer layers in at least part of a bottom of the container, wherein the melt viscosity x of a polyglycolic acid forming the polyglycolic acid layer is 300 to 900 Pa&#xb7;s as measured at a temperature of 270&#xb0; C. and a shear rate of 122 sec, the melt viscosity y of a thermoplastic polyester resin forming the thermoplastic polyester resin layers is 250 to 600 Pa&#xb7;s as measured at a temperature of 290&#xb0; C. and a shear rate of 122 sec, and a melt viscosity ratio x/y between both melt viscosities is 0.85 to 1.80, and a production process thereof.

Multilayer blow molded container and production process thereof

The present invention provides a process for forming a copper fine particle sintered product type of a fine-shaped electric conductor showing superior electroconductivity, which comprises steps of drawing a fine pattern with the use of a dispersion containing the copper fine particles having a surface oxide film layer, conducting a treatment for reducing the copper fine particles with the surface oxide film layer or copper oxide fine particles included in the pattern at a comparatively low temperature, and baking the resultant copper fine particles. Specifically, the process carries out the processes of; applying a dispersion containing the copper fine particles having the surface oxide film layer thereon or the copper oxide fine particles with an average particle diameter of 10 &#x3bc;m or smaller onto a substrate; and then performing a series of the heat treatment steps of heating the particles in the coated layer at temperature of 350&#xb0; C. or lower under an atmosphere containing a vapor and a gas of a compound having reducibility to reduce the oxide film by a reduction reaction which used the compound having reducibility as a reducing agent, subsequently repeating a heat treatment combining an oxidizing treatment of a short time with a re-reducing treatment, and sintering the resultant copper fine particles with each other to form a layer of the sintered product.

Method for forming fine copper particle sintered product type of electric conductor having fine shape, and process for forming copper fine wiring and thin copper film by applying said method

A multi-layer biaxially stretched blow bottle having a 3-layer structure of PET/nylon MXD6/PET or a 5-layer structure of PET/nylon MXD6/PET/nylon MXD6/PET, wherein the oxygen gas transmission coefficient of the nylon MXD6 layer is at most 6.0&#xd7;10cm&#xb7;cm/cm&#xb7;sec&#xb7;cmHg as measured under conditions of a temperature of 23&#xb0; C. and a relative humidity of 80%, and a production process of the bottle by biaxial stretch blow molding at a low stretching temperature and high draw ratios.

Multi-layered biaxial stretch blow molded bottle and method for production thereof

The present invention provides a conductive adhesive agent capable of being diluted with a solvent to give good coating workability and allowing formation of a conductive joint excellent in both thermal conductivity and electrical conductivity by inhibiting a gas generated when a binder resin is heat-cured after attachment of a part. The conductive adhesive agent according to the present invention is a conductive adhesive agent wherein, based on 100 parts by weight of silver powder having an average particle diameter of micrometers, which is used for a conductive medium, e.g. as a main component, 1 to 10 parts by weight of silver fine particles having an average particle diameter of nanometers is used in combination therewith and 5 to 15 parts by weight of thermosetting resin as a binder resin component and 10 parts or less by weight of solvent for adjustment of a fluid viscosity are blended therein as essential components, and by selection of such a blending ratio, generation of a gas component during heating and curing of the thermosetting resin to prevent formation of voids, and at the same time, fabrication of a conductive joint excellent in thermal conductivity and electrical conductivity is achieved.

Conductive adhesive agent with ultrafine particles

Growing community of inventors

Ibaraki, Japan

Daisuke Itoh