Mitsubishi Petrochemical Company Limited

Nisshin Steel Co., Ltd.

Mitsubishi Chemical Corporation

C.uyemura Co., Ltd.

Shoichiro Mori

Kazuhiko Ida

Makoto Ue

Hitoshi Suzuki

Isao Saeki

Setsuko Takahashi

Mitsumasa Kaitoh

Tadamichi Aoki

Ryozo Hamana

Minoru Kotato

Fujio Matsui

Noriko Shima

Tomohiro Sato

Fumikazu Mizutani

Hiroyuki Omori

Tadashi Ayusawa

Manabu Hayashi

Yutaka Nomura

Teruhiko Ishii

Katsuhiko Ohara

Seteuko Takahashi

Marc Deshamps

Shoji Yamaguchi

Ida Kazuhiko

Keiko Nishioka

Kikuko Tanaka

Kayoko Oku

A nonaqueous electrolytic solution cell having a negative electrode containing lithium as an active material, a positive electrode, a nonaqueous electrolytic solution consisting of solute and organic solvent, a separator, and an outer can, wherein the organic solvent contains a compound having an S&mdash;O bond, and a current collector for the positive electrode and an electrolytic solution-contacting portion on the positive electrode side of the outer can are made of valve metal or alloy thereof is disclosed. The nonaqueous electrolytic solution cell of the present invention is excellent in low-temperature characteristics and long-term stability, and also in cycle characteristics for use as a secondary battery.

Non-aqueous electrolyte cell with a solvent including a S-O bond

Non-aqueous solvent secondary battery electrode material and process for

There is disclosed a method for producing an ambient temperature molten salt comprising at least one of 1,3-dialkylimidazolium halide, 1,2,3-trialkylimidazolium halide and N-alkylpyridinium halide, and an aluminum halide, which comprises suspending the above starting materials in an inert solvent having a low boiling point to carry out a complex forming reaction.

Method for producing ambient temperature molten salt consisting of

There is disclosed a non-aqueous electrolytic aluminum plating bath composition comprising an aluminum halide and a nitrogen-containing heterocyclic onium halide compound and containing an additive selected from the group consisting of an inorganic halide compound, aromatic aldehyde, ketone or carboxylic acid, an unsaturated heterocyclic compound containing more than one nitrogen atom, an unsaturated heterocyclic compound containing a sulfur atom, an aromatic hydrocarbon compound containing a sulfur atom, an aromatic hydrocarbon compound containing an amino group and an aromatic amine; and further optionally an organic polymer. The bath composition is easy in maintenance, has good covering power, and enables smooth plating with low current density.

Non-aqueous electrolytic aluminum plating bath composition

There is disclosed an aluminum electroplating method, which compriss using a low melting composition comprising a mixture of 20 to 80 mole % of an aluminum halide and 80 to 20 mole % of an onium halide of a nitrogen-containing compound selected from the group consisting of bicyclic quaternary amidinium halides, 1-alkylaminopyridinium halides, trialkylimidazolium halides, benzimidazolium halides, alicyclic quaternary ammonium halides and asymmetric tetraalkylammonium halides.

Aluminum electroplating method

A dibenzylidenesorbitol derivative having at least one nuclear substituent selected from an ester group represented by --COOR.sup.1 and an amido group represented by --CONR.sup.2 R.sup.3, wherein R.sup.1 represents a hydrocarbon group having 1 to 20 carbon atoms, and R.sup.2 and R.sup.3 are identical or different and each independently represents a hydrogen atom, an alkyl group, an aryl group or an aralkyl group.

Sorbitol derivatives

In the plating for electrodeposition of aluminum using a non-aqueous solution, a plating bath is prepared to comprise a low-melting plating bath, which comprises a molten mixture comprising an aluminum halide and a dialkyl-and/or trialkylpyridinium halide represented by the following formula: ##STR1## wherein R.sup.1 represents an alkyl group having 1 to 12 carbon atoms, R.sup.2 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R.sup.3 represents an alkyl group having 1 to 6 carbon atoms, and X represents a halogen atom; and said alkyl groups each refer to a straight-chain hydrocarbon group, a branched hydrocarbon group, an alicyclic hydrocarbon group, or any of these further partly containing an aromatic hydrocarbon group, by which the bath life, operability in handling, conductivity, and current efficiency can be improved.

Plating bath for electrodeposition of aluminum and plating process

A process for producing quaternary salts of high purity is disclosed, comprising reacting a tertiary amine or phosphine with a carbonic acid diester to form a corresponding quaternary carbonate and further mixing it with an acid to perform decarboxylation. The quaternary salts thus obtained are useful compounds which can be used in wide fields as various catalysts, electrolytes, additives, medicaments, etc.

Process for producing quaternary salts

An electrolyte for aluminum electrolytic capacitor is described, comprising a solution of, as a solute, a quaternary ammonium salt having as an anion component the conjugated base of an inorganic acid compound selected from the group consisting of

Electrolyte for aluminum electrolytic capacitor

An electrolyte for use in an aluminum electrolytic capacitor is described. The electrolyte comprises a solution of a quaternary phosphonium salt as a solute dissolved in an aprotic solvent. The electrolyte can reduce internal resistance of the electrolytic capacitor and broaden the temperature range over which the electrolytic capacitor can be used.

A process for preparing a pentaerythritol-tetrakis(3-alkylthio-propionate) represented by the general formula: ##STR1## wherein R represents an alkyl group having from 8 to 30 carbon atoms, is disclosed, comprising reacting an alkylmercaptan having from 8 to 30 carbon atoms with an acrylic ester or an acrylic amide to form a 3-alkylthio-propionic acid ester or a 3-alkylthio-propionic acid amide, hydrolyzing the ester or amide to form a 3-alkylthio-propionic acid, and then reacting this product with pentaerythritol. The desired product can easily be obtained at high purity and high yield by this process.

Process for preparing pentaerythritol-tetrakis(3-alkylthio-propionate)

An electrolyte solution for use in an electrolytic capacitor. The solution comprises as a solute at least one quaternary ammonium salt of a carboxylic acid selected from the group consisting of

Electrolyte solution for electrolytic capacitor

A process for the production of piperidine by catalytic hydrogenation of furfurylamine and/or tetrahydrofurfurylamine in the presence of a hydrogenation catalyst by flowing hydrogen gas into a reaction zone, wherein the starting material is introduced into a liquid phase in the reaction zone, the liquid phase being maintained at a constant temperature, and the reaction product is withdrawn from the reaction zone in a gaseous form together with excess hydrogen gas.

Process for the production of piperidine

A process for producing furfurylamine and/or tetrahydrofurfurylamine in a high yield is disclosed, which comprises subjecting a mixture of furfural and a primary amine to a liquid-phase catalytic hydrogenation using a hydrogenation catalyst in the presence of ammonia, wherein the primary amine is furfurylamine and/or tetrahydrofurfurylamine and the hydrogenation catalyst is selected from the group consisting of cobalt-based catalysts and nickel-based catalysts.

Growing community of inventors

Ami, Japan

Shoichiro Mori