Abstract: A polyester resin that is a condensation polymer of a polyol mixture including an epoxidized vegetable oil and a rosin additive, a polycarboxylic acid and a vegetable-derived polyol; has a mass ratio (rosin/epoxidized vegetable oil) between the rosin and the epoxidized vegetable oil of 2-10; and has a biomass content of at least 80%. The polyester resin has a high proportion of biomass-derived components and can be used to obtain an offset printing ink composition that has excellent scratch resistance and excellent abrasion resistance.

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: The present invention provides a studless winter tire having excellent performance on ice. The present invention relates to a studless winter tire including a tread formed from a rubber vulcanizate, the rubber vulcanizate containing a rubber component, and a short fiber with a degree of fibrillation of 50 to 95%.

Abstract: Provided are a cap tread rubber composition for cold weather tires providing a balanced improvement in fuel economy, abrasion resistance, chipping resistance, performance on ice and snow during high-speed running, and high-speed performance (handling stability, grip performance) on snow/ice-free cold roads, and a cold weather tire formed therefrom. The rubber composition contains: a rubber component including an isoprene-based rubber, BR, and SBR; silica; and a plasticizer, the isoprene-based rubber and the BR being present in a combined amount of 80% by mass or more, the BR being present in an amount of 30% by mass or more, the SBR being present in an amount of 0.3-10% by mass, each based on 100% by mass of the rubber component, the rubber composition containing, per 100 parts by mass of the rubber component, 120 parts by mass or more of the silica and 50 parts by mass or more of the plasticizer.

Abstract: The present invention provides a rubber composition for studless winter tires that provides improved performance on ice and a studless winter tire including the rubber composition. The present invention relates to a tread rubber composition for studless winter tires containing: a rubber component including an isoprene-based rubber and a conjugated diene polymer; a water-soluble fine particle; and a liquid plasticizer, the liquid plasticizer being present in an amount of 30 parts by mass or less per 100 parts by mass of the rubber component.

Abstract: Provided is a rubber composition for tires that provides a balanced improvement of wet grip, abrasion resistance, handling stability, and fuel economy during high-speed running, and further has less performance degradation after long-term service. Also provided is a tire including the rubber composition. Included is a rubber composition for tires containing, based on 100% by mass of a rubber component therein: 3-25% by mass of a component derived from an aromatic vinyl monomer; 0-15% by mass of a component derived from a butadiene monomer and having a vinyl configuration; 1-90% by mass of a component derived from a butadiene monomer and having a cis configuration; and 1-6% by mans of a component derived from an isoprene monomer and having a cis configuration, the rubber composition having, after vulcanization, physical properties satisfying the following relationships (1) and (2): ?25° C.<Tg<0° C.??(1); and 65<Hs<75??(2).

Abstract: The present invention provides a cap tread rubber composition and a pneumatic tire formed from the rubber composition which are excellent in grip performance and abrasion resistance during high speed running. Provided is a cap tread rubber composition, containing: styrene butadiene rubber and/or polybutadiene rubber; an isoprene-based rubber; a filler; and a plasticizer, the rubber composition containing, based on 100% by mass of a rubber component therein, at least 90% by mass in total of the styrene butadiene rubber and/or polybutadiene rubber and 0.3% to 10% by mass of the isoprene-based rubber, the filler including, based on 100% by mass thereof, at least 80% by mass of silica, the rubber composition containing, per 100 parts by mass of the rubber component, at least 110 parts by mass of the silica and at least 50 parts by mass of the plasticizer.

Abstract: To provide a rubber compound for tires, a pneumatic tire and an airless tire capable of improving the steering stability of the tire while exerting excellent low fuel consumption performance. A rubber compound for tires characterized in that, of vulcanized rubber's physical properties, a complex elastic modulus E*70 (unit: MPa) and a loss tangent tan ?70 under initial strain of 10%, dynamic strain of 2% and temperature of 70 degrees C., satisfy 90<E*70<250, and E*70/tan ?70>800. A pneumatic tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided in a tread ring with a shear rubber layer made of the above-mentioned rubber compound.

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 are a cap tread rubber composition for cold weather tires enabling a balanced improvement in fuel economy, abrasion resistance, performance on ice/snow, and high-speed performance on snow-/ice-free cold roads, and a cold weather tire formed from the same. The rubber composition contains: a rubber component including BR, SBR, and NR and/or IR; and a filler, the composition having a combined amount of NR, IR, and BR of 80% by mass or more, an amount of BR of 30% by mass or more, and an amount of SBR of 0.3-10% by mass, each per 100% by mass of the rubber component, the filler including 60% by mass or more of silica per 100% by mass of the filler, the composition containing, per 100 parts by mass of the rubber component, 50 parts by mass or more of a fine particle silica having a N2SA of 190 m2/g or more.

Abstract: Provided are a rubber composition for tires that achieves a balanced improvement in fuel economy, abrasion resistance, and performance on ice, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires containing predetermined amounts of natural rubber, polybutadiene rubber, silica, and a silane coupling agent represented by a specific formula.

Abstract: Provided is a rubber composition for tires that provides a balanced improvement of wet grip, abrasion resistance, handling stability, and fuel economy during high-speed running, and further has less performance degradation after long-term service. Also provided is a tire including the rubber composition. Included is a rubber composition for tires containing, based on 100% by mass of a rubber component therein: 3-25% by mass of a component derived from an aromatic vinyl monomer; 0-15% by mass of a component derived from a butadiene monomer and having a vinyl configuration; 1-90% by mass of a component derived from a butadiene monomer and having a cis configuration; and 1-6% by mans of a component derived from an isoprene monomer and having a cis configuration, the rubber composition having, after vulcanization, physical properties satisfying the following relationships (1) and (2): ?25° C.<Tg<0° C. ??(1); and 65<Hs<75 ??(2).

Abstract: Provided are a rubber composition for tires that shows a balanced improvement in fuel economy, abrasion resistance, wet performance, and handling stability, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires containing a modified diene rubber containing a functional group reactive with silica, a fine particle silica having a nitrogen adsorption specific surface area of 180 m2/g or more, and a silane coupling agent represented by a specific formula.

Abstract: According to a production method of a rubber composition for tire of the present invention comprising a rubber component (A) comprising at least one selected from the group consisting of a natural rubber and a synthetic diene rubber, a filler, a coupling agent (D) of (CpH2p+1O)3—Si—(CH2)q—S—CO—CkH2k+1, and a vulcanizing agent (E) comprising a vulcanizer and a vulcanization accelerator, the method comprising: a step X1 of kneading all amount of A, a part of the filler and a part of D, a step X2 of kneading the kneaded product of step X1, the remaining amount of the filler and D, and a step F of kneading the kneaded product of step X2 and E, it is possible to produce a rubber composition for tire in which fuel efficiency and abrasion resistance are improved in a good balance.

Abstract: A method for manufacturing a tire rubber composition includes kneading a rubber component, a silane coupling agent and a silica having a BET specific surface area of 210 m2/g or more, adding a vulcanization accelerator to a first kneaded material including the rubber component, silane coupling agent and silica, kneading a first resulting mixture including the rubber component, silane coupling agent, silica and vulcanization accelerator such that a second kneaded material including the rubber component, silane coupling agent, silica and vulcanization accelerator is obtained, adding a vulcanization agent to the second kneaded material including the rubber component, silane coupling agent, silica and vulcanization accelerator, and kneading a second resulting mixture including the rubber component, silane coupling agent, silica, vulcanization accelerator and vulcanization agent. The first kneaded material has a pH of 6.5 or less, and the second kneaded material has a pH of 8.0 or more.

Abstract: The tire of the present invention is a tire having an inner liner composed of a rubber composition for an inner liner which is excellent in steering stability, fuel efficiency and a balance of physical properties while maintaining air permeation resistance and durability. The rubber composition for an inner liner comprises a rubber component and additives, wherein E* (MPa) and tan ? measured at a temperature of 70° C., an initial strain of 10% and a dynamic strain of 2% satisfy the following formulas (1) to (3), an air permeation coefficient is not more than 12.00×10?14 cm3·cm/(cm2·s·Pa), and TB (MPa) and EB (%) as measured in accordance with JIS K6251 satisfy the following formulas (4) and (5). E*/tan ?>17??Formula (1): 2.5<E*<5??Formula (2): tan ?<0.

Abstract: The present invention provides a cold weather tire achieving a balanced improvement in conductivity, fuel economy, performance on ice and snow, high speed performance (handling stability, grip performance) on snow- and ice-free cold roads, and road noise performance. Provided is a pneumatic tire including: a two-layer tread including a base tread and a cap tread, the base tread being formed of a rubber composition for base treads containing: predetermined amounts of a rubber component including natural rubber and/or polyisoprene rubber, and a filler including silica and carbon black, the cap tread being formed of a rubber composition for cap treads containing a predetermined amount of silica, the cap tread having cells and/or voids.

Abstract: The present invention provides a modified natural rubber having a good balance of improved fuel economy, heat-aging resistance, processability, and breaking resistance, and a method for producing such a rubber. The present invention also provides a tire rubber composition and a pneumatic tire which are prepared using the modified natural rubber. The present invention relates to a highly purified, modified natural rubber whose pH is adjusted to 2 to 7.

Abstract: Provided are a cap tread rubber composition for cold weather tires providing a balanced improvement in fuel economy, abrasion resistance, chipping resistance, performance on ice and snow during high-speed running, and high-speed performance (handling stability, grip performance) on snow/ice-free cold roads, and a cold weather tire formed therefrom. The rubber composition contains: a rubber component including an isoprene-based rubber, BR, and SBR; silica; and a plasticizer, the isoprene-based rubber and the BR being present in a combined amount of 80% by mass or more, the BR being present in an amount of 30% by mass or more, the SBR being present in an amount of 0.3-10% by mass, each based on 100% by mass of the rubber component, the rubber composition containing, per 100 parts by mass of the rubber component, 120 parts by mass or more of the silica and 50 parts by mass or more of the plasticizer.

Abstract: A highly reliable semiconductor device which uses an oxide semiconductor film for a backplane is provided. A semiconductor device includes a first conductive film, a first insulating film over the first conductive film, an oxide semiconductor film which is over the first insulating film and overlaps with the first conductive film, a second insulating film over the oxide semiconductor film, and a pair of second conductive films electrically connected to the oxide semiconductor film through an opening portion included in the second insulating film. The second insulating film overlaps with a region of the oxide insulating film in which a carrier flows between the pair of second conductive films and overlaps with end portions of the oxide semiconductor film.