Kuraray Co., Ltd.

Hitachi, Ltd.

Tagasangyo, Ltd.

Ube Industries, Inc.

Ihitachi Taga Technology, Ltd.

Hitachi Industrial Equipment Systems Co., Ltd.

Unitika Ltd.

Kozo Tamura

Takashi Sato

Shimon Kanai

Takaharu Shigematsu

Syoichi Nihira

Hideaki Suzuki

Akira Iida

Hideaki Oka

Kenzo Mikada

Toshiharu Kodato

Yasuhiro Tsukamoto

Toshihiro Takahashi

Haruhisa Masuda

Tasuku Shimizu

Masatoshi Tanabe

Koji Nakamura

Tetsuya Hara

Kazuhiro Satou

Masato Yabu

Shoichi Ito

Kazunori Watanabe

Nobuyoshi Hosaka

Tomoharu Nishioka

Hideharu Matsuoka

Toru Kuki

Koichi Warino

Yuuki Tai

Yuji Munesawa

Arihiro Anada

Shigeru Kawahara

Susumu Matsunaga

Ryu Kohase

Tomotaka Honda

Masaki Kaji

Akira Maejima

Hiroe Kumazawa

Hiroki Yamasaki

Yoshio Iwata

Yasuaki Nakayama

Hiroyuki Omichi

Kunihiko Tomiyasu

The present invention provides a polyamide having excellent heat resistance, water resistance, and impact resistance. The present invention relates to a polyamide including: structural units derived from an aromatic dicarboxylic acid; and structural units derived from an aliphatic diamine. This polyamide contains 0.40 to 0.70 mol % in total of hydroxyl groups and ester groups with respect to 100 mol % of structural units derived from dicarboxylic acids.

Polyamide

The present invention provides a polyamide composition for a reflector having high heat resistance and good mechanical properties, having excellent adhesion to a sealing material for an LED package, and capable of retaining a high reflectance even after exposure to heat and light intended for the production process of the LED package and the environment in which the reflector is used in the LED package, when it is molded. The present invention is a polyamide composition for a reflector, containing: 30 mass % or more of a polyamide (A) having a melting point of 280&#xb0; C. or higher; and 25 mass % or more of titanium oxide (B). The total content of the polyamide (A) and the titanium oxide (B) is 75 mass % or more.

Polyamide composition for reflector, reflector, light emitting device including the reflector, and lighting device and image display device each including the light emitting device

A polyamide resin composition includes: 100 parts by mass of (A) a polyamide having a melting point of 280 to 330&#xb0; C.; 0.5 to 80 parts by mass of (B) aluminum diethylphosphinate; 0.2 to 2 parts by mass of (C) at least one phosphorous acid ester represented by formula (6) or (7); and (E) at least one reinforcing material. A mass ratio of the at least one phosphinic acid salt (B) to the at least one phosphorous acid ester (C) ((B)/(C)) is in a range of from 10 to 100. An average particle diameter of the phosphinic acid salt (B) is 0.1 to 100 &#x3bc;m. The polyamide resin composition does not comprise a metallic soap-based lubricant. 

Polyamide resin composition and molded article produced therefrom

The present invention provides a reflector for an LED, including a polyamide composition and configure to keep high reflectance and high degree of whiteness even after being irradiated with LED light for a long period of time. The present invention is a reflector for an LED, including a polyamide composition containing polyamide (A) that has dicarboxylic acid units including 50 to 100 mol % of 1,4-cyclohexanedicarboxylic acid units and diamine units including 50 to 100 mol % of aliphatic diamine units having 4 to 18 carbon atoms.

Reflector for LED and light-emitting device equipped with same

The present invention provides a polyamide resin composition not only having an appropriate melt viscosity despite addition of a conductive filler thereto but also having excellent moldability, conductivity, low-temperature impact resistance, and fuel barrier properties. The present invention is a polyamide resin composition containing specific amounts of a polyamide, a modified resin, and a conductive filler. The polyamide contains: dicarboxylic acid units containing 50 mol % or more of terephthalic acid units and/or naphthalenedicarboxylic acid units; and diamine units containing 60 mol % or more of aliphatic diamine units having 4 to 18 carbon atoms, and has terminal amino groups in an amount of 5 to 60 &#x3bc;mol/g. The modified resin has been modified with an unsaturated compound having a carboxyl group and/or an acid anhydride group. In the polyamide resin composition, a difference between the number of moles (M) of the terminal amino groups of the polyamide and the number of moles (M) of the carboxyl groups and the acid anhydride groups of the modified resin in 1 g in total of the polyamide and the modified resin is &#x2212;5.0 &#x3bc;mol or more and less than 4.0 &#x3bc;mol, and the number of moles (M) is more than 4.0 &#x3bc;mol.

Resin composition and molded article containing the same

A multi-layer structure excellent in the barrier properties against alcohol gasoline, particularly hydrocarbon components, and also excellent in the interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance is provided. The stractive is a multi-layer structure comprising two or more layers including at least a layer (a) comprising (A) nylon 11 and/or nylon 12 and a layer (b) comprising (B) a polyamide resin (nylon 9T) consisting of a dicarboxylic acid component and a-diamine component, with 60 to 100 mol % of the dicarboxylic acid component being a terephthalic acid and 60 to 100 mol % of the diamine component being a diamine component selected from 1,9-nonanediamine and 2-methyl-1,8-octanediamine, and preferably further including a layer (c) comprising (A) nylon 11 and/or nylon 12 or (C) nylon 6.

Multi-layer structure

Polyamide composition

A method for producing polyamides, and to a method for producing primary polycondensates which are intermediates for polyamide production. More precisely, the invention relates to a method for producing primary polycondensates, which comprises a step of polycondensing a dicarboxylic acid component having a terephthalic acid content of from 60 to 100 mol % and a diamine component in which the amount of 1,9-nonanediamine and/or 2-methyl-1,8-octanediamine falls between 60 and 100 mol %, in the presence of water of being from 15 to 35% by weight, at a reaction temperature falling between 250.degree. C. and 280.degree. C. and under a reaction pressure (P) that satisfies the following formula (1):

Method for producing polyamides

The present invention relates to a bubble massager used in a bathtub in which a rechargeable storage battery is used as a power supply, One display unit for displaying both a charging state and an operating state is provided. It is possible to discharge and select three types of bubble jets, weak, strong and intermittent, and to display an operating mode. Futhermore, it is possible to display a trouble location of the bubble massager by high-speed flickering of the one display unit. Moreover, the bubble massager constructed so that the jet is controlled so as to be discharged in the order of weak.fwdarw.strong.fwdarw.intermittent and the intermittent jet is made to repeat strong .rarw..fwdarw. feeble jet for providing an uninterrupted jet in order to relieve a shock due to a sensible sudden change caused by change over of the bubble jet.

Bubble massager

A charging circuit comprises a main circuit for charging a battery and a power unit connected to an electric power source. The main circuit and the power unit are connected through a connector to each other. The power source transformed by a transformer located at the power unit is supplied to the connector through a contact of a direct current relay. After alternating current is introduced to the main circuit from the power unit, the alternating current is rectified by a diode bridge. The direct current from the diode bridge is supplied to the battery through a control circuit. When the battery is charged sufficiently, the control circuit outputs an instruction signal to a diode portion of a photo-triac connected between an output terminal of the diode bridge and the control relay. When the instruction signal is transmitted to the diode portion, a triac portion of the photo-triac, which is connected between one of an input terminal of the diode bridge and the connector, outputs another instruction signal to the relay located at the power unit for opening the contact through the connector.

Charging circuit

There is provided a power supply apparatus for charging-type device including a transformer disposed in a main body of the power supply apparatus, current supply connection terminals connected to a secondary winding of the transformer, current receiving connection terminals so disposed in a charging-type device as to be capable of being coupled to and detached from the current supplying connection terminals, a storage battery so disposed in the charging-type device as to be charged from the current receiving connection terminals, and a load connected to the storage battery, the power supply apparatus for charging-type device comprising relay contacts of a relay connected to a primary side of a primary winding of the transformer, short-circuit contacts for the relay contacts, a relay coil for opering and closing the relay contacts, a first connection control terminal connected to the relay coil, and a second connection control terminal capable of being coupled and detached from the first connection control terminal, the relay coil being connected to a secondary side of secondary winding of the transformer via the first and second control terminals to interrupt a current flowing through the transformer upon completion of battery charging and upon detachment of the charging-type device from the main body of the power supply apparatus.

Power supply apparatus for charging-type device

A water purifier houses a material for water treatment. The water purifier employs an active carbon as this water purifying material, and this active carbon has pores on the surface of which water soluble mineral component is provided.

Water purifier

A water purifier has a deodorization tank for removing ions and odorants by adsorption from running water and a mesh filter for removing dust. The mesh filter is arranged at a water entrance of the deodorization tank. The deodorization tank contains an anti-bacterial membrane having a function of imparting an antibacterial activity to the water by supplying mineral ions to the running water and thereby alkalifying the water. The deodorization tank also has a water exit which is associated with a mineral supply filter for supplying a mineral component to the running water. The mineral supply filter is prepared by molding a powder obtained by adhering a material such as soda glass to the surface of heat-decomposed calcium carbonate.

Growing community of inventors

Ibaraki, Japan

Kozo Tamura