Abstract: A tire management system includes a management apparatus and a database portion. The tire management system acquires travel history data concerning a history of causes of degradation of tire performance of a tire mounted on a vehicle, and decides a replenishing agent for restoring the tire performance that has been degraded, based on the acquired travel history data.

Abstract: Provided is a semiconductive tape in which semiconductive resin layers in which metal particles are dispersedly mixed are disposed on a fibrous insulation substrate, wherein the metal particles have a melting point higher than the curing temperature of the thermosetting resin to be subjected to an impregnation treatment and lower than the softening point of the fibrous insulation substrate. The semiconductive tape is used for the stator coil of a rotating electric machine to suppress erosion of the thermosetting resin, impairment of semiconductivity thereof, and the like caused by heat generation, discharges and the like during operation of the rotating electric machine, thus exhibiting corona resistance stably over an extended period of time.

Abstract: Provided is a stator coil, including: a coil conductor; a first insulating layer in which a first mica tape is wound and laminated around an outer periphery of the coil conductor; and a second insulating layer in which a second mica tape is wound and laminated around an outer periphery of the first insulating layer, wherein the first mica tape contains mica in a specific content, wherein 60 mass % or more of the mica contained in the first mica tape passes through a JIS standard sieve having a nominal opening of 250 ?m, wherein the first mica tape has a specific lamination thickness, and wherein 40 mass % or less of mica contained in the second mica tape passes through the JIS standard sieve having a nominal opening of 250 ?m.

Abstract: Provided is an insulating varnish composition, including: two or more kinds of epoxy resins; and a filler having an average primary particle diameter of 500 nm or less, wherein the two or more kinds of epoxy resins contain 80 mass % or more of an epoxy resin having a number of repetitions of 0 in a molecular structural formula thereof with respect to a total mass of the two or more kinds of epoxy resins.

Abstract: The present invention provides a rubber composition for treads, containing: a rubber component including an isoprene-based rubber and polybutadiene rubber; silica; carbon black; a terpene-based resin; and a water-soluble fine particle and/or a foaming agent, the terpene-based resin having a softening point of 70-150° C., an ?-pinene unit content of 65-100% by mass, and a ?-pinene unit content of 0-35% by mass, the rubber component including, based on 100% by mass thereof, 20-80% by mass of the isoprene-based rubber and 20-80% by mass of the polybutadiene rubber, with a combined amount of the isoprene-based rubber and the polybutadiene rubber of 90% by mass or more, the rubber composition containing, per 100 parts by mass of the rubber component, 20-200 parts by mass of the silica, 0.1-50 parts by mass of the carbon black, and 0.1-50 parts by mass of the terpene-based resin.

Abstract: Provided is a stator coil, including: a coil conductor; a first insulating layer in which a first mica tape is wound and laminated around an outer periphery of the coil conductor; and a second insulating layer in which a second mica tape is wound and laminated around an outer periphery of the first insulating layer, wherein the first mica tape contains mica in a specific content, wherein 60 mass % or more of the mica contained in the first mica tape passes through a JIS standard sieve having a nominal opening of 250 ?m, wherein the first mica tape has a specific lamination thickness, and wherein 40 mass % or less of mica contained in the second mica tape passes through the JIS standard sieve having a nominal opening of 250 ?m.

Abstract: Provided are a rubber composition for tires that provides a balanced improvement of snow and ice performance and abrasion resistance, and a tire including the rubber composition. The rubber composition for tires contains: a rubber component including an isoprene-based rubber and BR; silica; and a terpene-based resin having a softening point of 60-150° C., an ?-pinene unit content of 65-100% by mass, a ?-pinene unit content of 0-35% by mass, and a limonene unit content of 10% by mass or lower, the rubber component including, based on 100% by mass thereof, 5-80% by mass of the isoprene-based rubber and 5-80% by mass of the BR, with a combined amount of the isoprene-based rubber and the BR of 60% by mass or more, the rubber composition containing, per 100 parts by mass of the rubber component, 1-500 parts by mass of the silica and 0.1-100 parts by mass of the terpene-based resin.

Abstract: A thermosetting resin composition of the present disclosure includes an epoxy resin (1) containing a curing agent, and inorganic particles (2) having a rutile-type crystal structure and an average particle diameter of 500 nm or less. Further, a stator coil of the present disclosure includes a coil conductor (6), and an insulating layer (7) obtained by winding an insulating tape around the coil conductor (6), impregnating the insulating tape with the thermosetting resin composition, and molding the impregnated insulating tape by heating and pressurizing. In addition, a rotating electric machine of the present disclosure includes a stator core (4) having a slot (10), in which the stator coil (5) is accommodated.

Abstract: The present invention provides rubber compositions and tires which provide improved overall performance in terms of wet grip performance and dry grip performance. Included is a rubber composition having a hardness that reversibly changes with water, satisfying the relationships (1) and (2) below, and having a stress at break of 8.0 MPa or more, Hardness when dry?Hardness when water-wet?1 ??(1) wherein each hardness represents the JIS-A hardness at 25° C. of the rubber composition, 0.90?Volume when water-wet/Volume when dry?1.01 ??(2) wherein each volume represents the volume at 25° C. of the rubber composition.

Abstract: Provided is a liquid thermosetting resin composition, including: a thermosetting resin (1) ; a nanocarbon (2) ; an organic additive (5) that has functional groups reactive with the thermosetting resin and the nanocarbon at molecular ends thereof; a polymerizable unsaturated monomer; and a polymerization initiator for the polymerizable unsaturated monomer, wherein content of the nanocarbon (2) is 0.1 mass % or more and 10 mass % or less with respect to the liquid thermosetting resin composition.

Abstract: A curable composition (X) includes: an epoxy resin (A); a curing agent (B); a curing promoter (C); and hydrophilic inorganic particles (D). The epoxy resin (A) includes a first epoxy resin (a1) and a second epoxy resin (a2). The first epoxy resin (a1) is a chain aliphatic epoxy resin having a hydrophilic group, and an aqueous dissolution rate of the first epoxy resin (a1) is not less than 20 mass % and not more than 99 mass %. The second epoxy resin (a2) includes at least one selected from the group consisting of a cyclic aliphatic epoxy resin, an aromatic epoxy resin and a heterocyclic epoxy resin.

Abstract: Provided are a rubber composition for tires that provides a balanced improvement of snow and ice performance and abrasion resistance, and a tire including the rubber composition. The rubber composition for tires contains: a rubber component including an isoprene-based rubber and BR; silica; and a terpene-based resin having a softening point of 60-150° C., an ?-pinene unit content of 65-100% by mass, a ?-pinene unit content of 0-35% by mass, and a limonene unit content of 10% by mass or lower, the rubber component including, based on 100% by mass thereof, 5-80% by mass of the isoprene-based rubber and 5-80% by mass of the BR, with a combined amount of the isoprene-based rubber and the BR of 60% by mass or more, the rubber composition containing, per 100 parts by mass of the rubber component, 1-500 parts by mass of the silica and 0.1-100 parts by mass of the terpene-based resin.

Abstract: The present invention provides a rubber composition for tires that provides a balanced improvement of grip performance, fuel economy, and abrasion resistance. Included is a rubber composition for tires, containing a rubber component and a terpene-based resin, the rubber component including, based on 100% by mass thereof, 5-100% by mass of styrene butadiene rubber and 0-80% by mass of polybutadiene rubber, with a combined amount of the styrene butadiene rubber and the polybutadiene rubber of 80% by mass or more, the terpene-based resin having a softening point of 70-150° C., an ?-pinene unit content of 65-100% by mass, a ?-pinene unit content of 0-35% by mass, and a limonene unit content of 10% by mass or lower, the rubber composition containing, per 100 parts by mass of the rubber component, 0-500 parts by mass of silica and 0.1-100 parts by mass of the terpene-based resin.

Abstract: The present invention provides a rubber composition for treads, containing: a rubber component including an isoprene-based rubber and polybutadiene rubber; silica; carbon black; a terpene-based resin; and a water-soluble fine particle and/or a foaming agent, the terpene-based resin having a softening point of 70-150° C., an ?-pinene unit content of 65-100% by mass, and a ?-pinene unit content of 0-35% by mass, the rubber component including, based on 100% by mass thereof, 20-80% by mass of the isoprene-based rubber and 20-80% by mass of the polybutadiene rubber, with a combined amount of the isoprene-based rubber and the polybutadiene rubber of 90% by mass or more, the rubber composition containing, per 100 parts by mass of the rubber component, 20-200 parts by mass of the silica, 0.1-50 parts by mass of the carbon black, and 0.1-50 parts by mass of the terpene-based resin.

Abstract: A pneumatic tire having a tire component prepared by use of a rubber composition according to the present invention which comprises: a polybitadiene (i) which satisfies conditions of (A) a Mooney viscosity (ML1+4, 100° C.) of 43 to 70, (B) a ratio (Tcp/ML1+4, 100° C.) of 5% by mass toluene solution viscosity (Tcp) to Mooney viscosity (ML1+4, 100° C.) of 0.9 to 1.7, (C) a stress relaxation time (T80), being a time until a torque is attenuated by 80% assuming that the torque at the end of ML1+4, 100° C. measurement is 100%, of 10.0 to 40.0 seconds, (D) a molecular weight distribution (Mw/Mn) of 2.50 to 4.00, and (F) a proportion of cis-structure in microstructural analysis of not more than 98 mol %; another rubber (ii); and a rubber reinforcing material (iii), is excellent in processability and properties of tire.

Abstract: The present invention provides, inter alia, a method for producing a masterbatch in which the dispersibility of microfibrillated plant fibers is further increased to obtain excellent processability and improved rubber properties such as fuel economy, tensile strength, and elongation at break. The present invention relates to a method for producing a masterbatch, the method including step (I) of mixing a rubber latex with microfibrillated plant fibers oxidized with an N-oxyl compound to obtain a mixture, and coagulating the mixture by adjusting its pH to 2 to 6.

Abstract: The present invention provides a rubber composition for a tire having improved workability and abrasion resistance. A rubber composition for a tire according to the present invention comprises: a polybutadiene which has: (A) a Mooney viscosity (ML1+4,100° C.) being 43 or more; (B) a ratio (Tcp/ML1+4,100° C.) of 5 wt % toluene solution viscosity (Tcp) to Mooney viscosity (ML1+4,100° C.) being 0.9 to 2.3; (C) a stress relaxation time (T80) being 10.0 to 40.0 seconds, which is a time until a torque is attenuated by 80% when the torque at the end of ML1+4,100° C. measurement is 100%; and (D) a molecular weight distribution (Mw/Mn) being 2.50 to 4.00; another rubber (ii); and a rubber reinforcing material (iii).

Abstract: Provided is a pneumatic tire that provides a balanced improvement of abrasion resistance, wet grip performance, and fuel economy. A rubber composition for tires containing: a rubber component including an aromatic vinyl-conjugated diene copolymer that contains aromatic vinyl units derived from an aromatic vinyl compound and conjugated diene units derived from a conjugated diene compound; carbon black; and a silica having a N2SA of 40 m2/g or more, the copolymer containing at least 80% of isolated aromatic vinyl units based on the total aromatic vinyl units, the copolymer having a ?Tg of more than 10° C. but less than 20° C. as determined by DSC, the rubber component including, based on 100% by mass thereof, 1-60% by mass of the copolymer and 0-99% by mass of an isoprene-based rubber, the rubber composition containing 10 parts by mass or more of the silica per 100 parts by mass of the rubber component.

Abstract: Provided is a pneumatic tire that provides a balanced improvement of tensile strength and fuel economy. Included is a rubber composition for tires containing: a rubber component including an aromatic vinyl-conjugated diene copolymer that contains aromatic vinyl units derived from an aromatic vinyl compound and conjugated diene units derived from a conjugated diene compound; carbon black; and silica, the copolymer containing at least 80% of isolated aromatic vinyl units based on the total aromatic vinyl units, the copolymer having a ?Tg of more than 10° C. but less than 20° C. as determined by DSC, the rubber component including, based on 100% by mass thereof, 10% by mass or more of the copolymer, the rubber composition containing 10 parts by mass or more of the silica per 100 parts by mass of the rubber component.

Abstract: Provided is a pneumatic tire that provides a balanced improvement of abrasion resistance, wet grip performance, and fuel economy. A rubber composition for tires containing: a rubber component including an aromatic vinyl-conjugated diene copolymer that contains aromatic vinyl units derived from an aromatic vinyl compound and conjugated diene units derived from a conjugated diene compound; carbon black; and a silica having a N2SA of 40 m2/g or more, the copolymer containing at least 80% of isolated aromatic vinyl units based on the total aromatic vinyl units, the copolymer having a ?Tg of more than 10° C. but less than 20° C. as determined by DSC, the rubber component including, based on 100% by mass thereof, 1-90% by mass of the copolymer and 0-70% by mass of an isoprene-based rubber, the rubber composition containing 10 parts by mass or more of the silica per 100 parts by mass of the rubber component.