Kaneka Corporation

Panasonic Intellectual Property Management Co., Ltd.

Gs Yuasa International Ltd.

Japan Aerospace Exploration Agency

Hokuyo Co., Ltd.

Takeshi Chiba

Kazuhiro Sugie

Akio Taniguchi

Takuma Iida

Tomoki Hiiro

Hiroyuki Jimbo

Kentaro Takesada

Tadashi Kokubo

Yutaka Kaneda

Atsushi Kumasaki

Shunsuke Nitta

Yuichi Ishida

Takashi Ueda

Rikio Yokota

Yu Kojima

Yoshio Furukawa

Kohei Kawamura

Takefumi Furuta

Yuki Nakanishi

Kenji Izumi

Kozo Kondo

Etsuko Ogasawara

Nobuaki Ohshiro

Yutaka Kakeda

Yoshinobu Sato

An object of the present invention is to reduce or eliminate a defect (e.g., a void) by achieving (i) a semipreg and a prepreg each of which allows a reduction in residual volatile component and (ii) methods for producing the semipreg and the prepreg, respectively, and consequently to achieve (iii) a fiber-reinforced composite material which has high heat resistance and superior mechanical strength and a (iv) a method for producing the fiber-reinforced composite material. The present invention attains the above object by providing, for example, a semipreg containing: powders of an imide oligomer; and reinforcement fibers, the imide oligomer being represented by a specific general formula (1).

Semipreg, prepreg, resin composite material, and production methods thereof

A vehicle-mounted power supply system according to the present invention is provided with: a main battery; a sub-battery; a voltage regulating unit which regulates the voltage of power supplied from the main battery and the sub-battery; and a state detecting unit which detects the state of the sub-battery. The state detecting unit is provided with: a first calculating unit which calculates a first internal resistance on the basis of a drop in the voltage across the sub-battery and an inrush current when the sub-battery supplies power to a load; a second calculating unit which manipulates the voltage regulating unit immediately following the calculation of the first internal resistance, and subsequently at least one more time, to cause the sub-battery to be forcibly discharged, and calculates a second internal resistance on the basis of a relationship between the voltage across the sub-battery and the current flowing thereinto when forcibly discharged; and a state determining unit which determines the state of the sub-battery on the basis of the first internal resistance and changes in the second internal resistance.

On-vehicle power supply system and a state detecting method for battery contained in on-vehicle power supply system

A secondary battery status estimation device includes a sensor unit configured to detect a terminal voltage of a secondary battery, and an internal resistance calculator configured to calculate a direct current internal resistance of the secondary battery based on the terminal voltage and the charge-discharge current detected by the sensor unit. The internal resistance calculator calculates a direct current internal resistance based on the terminal voltage and the charge-discharge current detected by the sensor unit, in a stable period that is before starting a driving source for driving a vehicle and in which the terminal voltage and the charge-discharge current of the secondary battery fall within a predetermined fluctuation range, and in a high-current output period in which electric power for starting the driving source is output from the secondary battery and the terminal voltage of the secondary battery is brought to substantially minimum.

Secondary battery status estimation device and status estimation method

A sensor of a status determination device detects a magnitude of a terminal voltage of an auxiliary battery provided separately from a driving battery and a magnitude of a current flowing through the auxiliary battery. The driving battery is an electrical power source for a driving motor of a vehicle, and the auxiliary battery is an electrical power source for auxiliary equipment and has an output voltage lower than that of the driving battery. An internal resistance calculator calculates an internal resistance of the auxiliary battery based on the magnitude of the terminal voltage and the magnitude of the current detected by the sensor in a stable period that is before the auxiliary equipment is started and in which the magnitude of the terminal voltage and the magnitude of the current fall within predetermined fluctuation ranges, and those detected in a period after starting of the auxiliary equipment is detected.

Auxiliary battery status determination device and auxiliary battery status determination method

A lead acid battery including: a positive electrode plate including a positive electrode grid and a positive electrode active material; a negative electrode plate including a negative electrode grid and a negative electrode active material; an electrode plate group including the positive electrode plate, the negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate; a battery container including a plurality of cell chambers each accommodating the electrode plate group and an electrolyte; and a lid sealing an opening of the battery container. A ratio P/N of mass P of the positive electrode active material to mass N of the negative electrode active material is 1.25 or more and 1.65 or less. The negative electrode grid contains bismuth in an amount of 1 ppm or more and 300 ppm or less.

Lead acid battery

The present invention provides an acrylic block copolymer composition improving melt flowability at molding and being excellent in heat resistance in addition to maintain weather resistance, chemical resistance, adhesivity, flexibility and abrasion resistance which are the characteristics of the acrylic block copolymer. It is attained by a thermoplastic elastomer composition comprising an acrylic block copolymer (A) which comprises a methacrylic polymer block (a) and an acrylic polymer block (b), wherein at least one of polymer blocks among the methacrylic polymer block (a) and the acrylic polymer block (b) has a functional group (X), and a compound (B) containing 1.1 or more of functional groups (Y) in one molecule.

Thermoplastic elastomer composition and molded article

The present invention provides an acrylic block copolymer composition improving melt flowability at molding and being excellent in heat resistance in addition to keep weather resistance, chemical resistance, adhesion property, flexibility and abrasion resistance which are the characteristics of the acrylic block copolymer. It is attained by a thermoplastic elastomer composition comprising an acrylic block copolymer (A) which comprises a methacrylic polymer block (a) and an acrylic polymer block (b), wherein at least one of polymer blocks among the methacrylic polymer block (a) and the acrylic polymer block (b) has an acid anhydride group and/or a carboxyl group, and an acrylic polymer (B) having 1.1 or more of epoxy groups in one molecule.

The present invention relates to a block copolymer (A) including a (meth)acrylic polymer block (a) and an acrylic polymer block (b). The (meth)acrylic polymer block (a) is preferably copolymerized with a monomer having a functional group having high cohesive force, such as a carboxyl group, so that the 5%-weight-loss temperature is 300&#xb0; C. or more or the tensile strength is 3 MPa or more, and the hardness measured by a type A durometer according to JIS K6253 is 50 or less, and a compression set measured after 22 hours at 70&#xb0; C. is 45% or less. The block copolymer (A) exhibits excellent thermal decomposition resistance and low compression set at high temperatures. The block copolymer (A) can be used as a soft material for automobile, and has low hardness, high adhesion, high oil resistance, high weather resistance, high heat resistance, high recycling property, high tensile properties, and high wax remover resistance.

Block copolymer

The present invention provides a novel acrylic block copolymer rich in flexibility and excellent in mechanical strength, moldability, oil resistance, heat resistance, thermal decomposition resistance, weather resistance, and compression set, and further rich in reactivity. The present invention also provides compositions, seal products, and automobile, electric, and electronic parts, all of which include the acrylic block copolymer. The acrylic block copolymer includes a methacrylic polymer block (a) and an acrylic polymer block (b), at least one of the polymer blocks containing, in its main chain, at least one acid anhydride group (c) represented by formula (1): (wherein Rs each represent hydrogen or a methyl group and may be the same or different, n represents an integer of 0 to 3, and m represents an integer of 0 or 1).

Acrylic block copolymer and thermoplastic resin composition

A thermoplastic resin composition comprising a thermoplastic resin (a) and a block copolymer (b) containing a methacrylic polymer block (A) and an acrylic polymer block (B).

Thermoplastic resin composition

The present invention relates to a process for preparing regenerated collagen fiber which comprises treating regenerated collagen fiber with a monofunctional epoxy compound and a metal aluminum salt, in which treatment with the monofunctional epoxy compound initiated by adding sodium hydroxide to become 0.001 to 0.8 N based on the treatment solution and inorganic salt in an amount so that water absorption of the obtained regenerated collagen fiber becomes at most 100%, depending on amount of sodium hydroxide added. Also, the present invention relates to a process for setting regenerated collagen fiber obtained by the above process which comprises thermally setting the fiber by means of wet heat treatment at 50&#xb0; to 160&#xb0; C. and drying treatment at 20&#xb0; to 220&#xb0; C.

Growing community of inventors

Shizuoka, Japan

Takeshi Chiba