Mitsubishi Chemical Corporation

Honda Motor Co., Ltd.

Nippon Chemi-con Corporation

Hiroo Miyauchi

Masayuki Takeda

Makoto Ue

Takeshi Fujino

Takumi Watanabe

Kazuma Inoue

Shogo Koga

Noriaki Terada

Tsuyoshi Nagasaka

Masashi Ozawa

Naomi Fujimori

Byoungju Lee

Hideo Nagaoka

Kazunari Matsumura

Daisuke Noda

Akemi Hosokawa

A polyorganosiloxane may be high in elasticity and/or strength. The polyorganosiloxane may include an M unit (RRRSiO) at a content of 10 mol. % or more relative to the total of silicon and a T unit (RSiO) at a content of 80 mol. % or less relative to the total of silicon. The polyorganosiloxane may have an alkoxy group bound, at a content of 0.07 to 4 wt. %, based on total polyorganosiloxane weight, and a reactive functional group bound to silicon, with 3 to 12 of the reactive functional groups bound on a number basis per a molecular weight of 1000 of the polyorganosiloxane. The weight loss of the polyorganosiloxane at 110° C. under 0.15 torr for 2 hours may be 5 wt. % or less.

Polyorganosiloxane, polyorganosiloxane composition, cured product, polyorganosiloxane-containing electrolytic solution for electrolytic capacitor, and electrolytic capacitor using same

Provided are a polyorganosiloxane high in elasticity, high in strength and the like. The polyorganosiloxane is a polyorganosiloxane including an M unit (RRRSiO) at a content of 10% by mol or more relative to the total of silicon and a T unit (RSiO) at a content of 80% by mol or less relative to the total of silicon, the polyorganosiloxane having an alkoxy group bound and a reactive functional group bound to silicon, wherein the polyorganosiloxane has the alkoxy group bound at a content of 0.07 to 4% by weight based on the total weight of the polyorganosiloxane and has 3 to 12 of the reactive functional groups bound on a number basis per a molecular weight of 1000 of the polyorganosiloxane, and the weight loss of the polyorganosiloxane in heating at 110&#xb0; C. under a reduced pressure of 0.15 torr for 2 hours is 5% by weight or less.

Provided is an electrolyte containing tetrafluoroaluminate ions, which is advantageous in that the electrolyte can be prevented from leaking from both the cathode and the anode in an electrolytic capacitor. An electrolyte for electrolytic capacitor, which comprises: (A) a tetrafluoroaluminate ion, and (B) at least one compound selected from the group consisting of: (1) at least one compound selected from the group consisting of a phthalimide, a quinoline, a dioxime, a nitrophenol and an amino group-containing aromatic carboxylic acid; (2) at least one compound selected from the group consisting of an aluminum complex, a boric acid ester and a silicic acid ester; (3) at least one compound selected from the group consisting of a monocyclic quinone compound and a bicyclic quinone compound; (4) a tricyclic or higher polycyclic quinone compound; and (5) at least one compound selected from a heteropoly acid and a salt thereof,

Electrolysis solution for electrolytic capacitor, and electrolytic capacitor

The present invention provides an electric double layer capacitor which has electrodes made of an alkali-activated carbon, prepared from a graphitic material, useful in manufacturing high-capacitance capacitors and which has an electrolytic solution containing chain carbonate and/or cyclic carbonate. Even if the electric double layer capacitor is used under high-temperature and high-voltage conditions, chain carbonate and/or cyclic carbonate is prevented from being degraded and the amount of generated gas is slight. The electric double layer capacitor has high initial performance and energy density and the performance of the electric double layer capacitor is maintained high. The electrolytic solution contains a quaternary ammonium salt except for a quaternary ammonium salt containing a carbon atom being bonded to the quaternary nitrogen atom and being bonded to other nitrogen atom than the quaternary nitrogen atom, chain carbonate and/or cyclic carbonate, and a solvent containing a carboxylic ester which contains five or more carbon atoms and which has two or more carboxylic ester bonds.

Electric double layer capacitor and electrolytic solution therefor

There are provided an aluminum electrolytic capacitor comprising an anode, a cathode comprising aluminum and an electrolytic solution containing an onium salt of fluorine-containing anion, wherein the electrolytic solution has a water concentration of 1% by weight or less, or wherein the cathode has a peak top of Al2p spectrum of 74.0 to 75.8 eV as measured by a method in which the surface of the cathode in the aluminum electrolytic capacitor heated at 125&#xb0; C. for 50 hours is analyzed by X-ray photoelectron spectroscopy (XPS); an electrolytic solution for electrolytic capacitor comprising a quaternary cyclic amidinium tetrafluoroaluminate and a solvent and containing specific impurity compounds in a total amount of 0.6% by weight or less, and an electrolytic capacitor using the electrolytic solution; and a method for preparing an organic onium tetrafluoroaluminate which is advantageously used in an aluminum electrolytic capacitor.

Electrolyte for electrolytic capacitor, electrolytic capacitor and process for producing tetrafluoroaluminate salt of organic onium

In an electric double layer capacitor and electrolytic solution, decomposition of at least one of an open-chain carbonate and a cyclic carbonate can be controlled under high temperature conditions, initial performance and maintained ratio of capacitance are superior, and energy density is high, when graphitized alkali-activated carbon is used as an electrode material and at least one of an open-chain carbonate and a cyclic carbonate is used in an organic electrolytic solution. The electric double layer capacitor includes electrodes containing alkali-activated carbon including graphitized carbon material, and an organic electrolytic solution in which a supporting salt is dissolved in solvent including aromatic carboxylate and at least one of an open-chain carbonate and a cyclic carbonate, in which the content of the aromatic carboxylate is not more than 50 weight % relative to the total weight of the solvent.

Growing community of inventors

Mie, Japan

Hiroo Miyauchi