Daikin Industries, Ltd.

National Institute of Advanced Industrial Science and Technology

Dai Fukami

Taku Yamanaka

Hiroyuki Yoshimoto

Makoto Ono

Taketo Kato

Hirotoshi Yoshida

Yoshinori Nanba

Tomohiro Yoshida

Takahiro Taira

Masahiro Horibe

Takuya Yamabe

Yuto Kato

Takabumi Nagai

Tomohiro Ikeda

Ryo Sakamaki

Kyouhei Murayama

Tomomi Irita

The invention provides a connector-attached dielectric waveguide that allows the dielectric waveguide to be easily connectable with an opposite component and is capable of forming a connection structure exhibiting low transmission and return losses of a high frequency signal. The connector-attached dielectric waveguide includes a dielectric waveguide and a connector. The dielectric waveguide includes a dielectric waveguide body and a dielectric waveguide end. The dielectric waveguide end has a smaller cross-sectional area than the dielectric waveguide body.

Connector-attached dielectric waveguide including a connecting portion and a fixing portion that are slidably axially movable with respect to each other

The invention provides a dielectric waveguide for transmitting millimeter waves or sub-millimeter waves. The dielectric waveguide is easily processed and connected even when having a small diameter, and can provide a connection structure exhibiting low transmission and return losses of high frequency signals. The dielectric waveguide includes a dielectric waveguide body and a dielectric waveguide end having a lower permittivity than the dielectric waveguide body. The dielectric waveguide body and the dielectric waveguide end are seamlessly and monolithically formed from the same material.

Dielectric waveguide having a dielectric waveguide body and a dielectric waveguide end with specified densities and method of producing

The present invention provides a dielectric waveguide having excellent transmission efficiency. The dielectric waveguide includes a polytetrafluoroethylene molded article that has a permittivity of 2.05 or higher at 2.45 GHz or 12 GHz, a loss tangent of 1.20&#xd7;10or lower at 2.45 GHz or 12 GHz, and a hardness of 95 or higher.

Dielectric waveguide line comprising a polytetrafluoroethylene molded article and method of manufacture

The present invention provides a polytetrafluoroethylene aqueous dispersion containing high-molecular-weight, significantly small polytetrafluoroethylene particles and having excellent dispersion stability. The present invention relates to an aqueous dispersion containing polytetrafluoroethylene particles containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene. The polytetrafluoroethylene particles have a volume average particle size of not smaller than 0.1 nm but smaller than 20 nm, a melt flow rate of not lower than 0 g/10 min but lower than 80 g/10 min determined at 380&#xb0; C. and 5 kg load, a melting point of 324&#xb0; C. to 360&#xb0; C., and an initial pyrolysis temperature of not lower than 400&#xb0; C.

Polytetrafluoroethylene aqueous dispersion

The present invention provides a fluorine-containing and silicon-containing polymer of the general formula (A) or (B) (wherein each symbol is as defined in the description) which is useful for forming a surface treatment layer having water-repellency, oil-repellency and antifouling property and excellent surface slip property.

Fluorine-containing, silicon-containing polymer and surface treatment agent

The present invention provides a composition which is able to form a layer having excellent surface slip property and friction durability in addition to water-repellency, oil-repellency and antifouling property. The present invention provides a surface-treatment composition comprising (A) at least one fluorine-containing polymer having a curable moiety, and (B) at least one silicon-containing polymer having a curable moiety.

Surface treatment composition

The present invention provides a polytetrafluoroethylene powder having high dispersibility in lubricants. The polytetrafluoroethylene powder includes polytetrafluoroethylene containing a tetrafluoroethylene unit alone or a tetrafluoroethylene unit and a modifying monomer unit based on a modifying monomer copolymerizable with the tetrafluoroethylene, and has a specific surface area of 32 m/g or larger.

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Osaka, Japan

Dai Fukami