Patent application number | Description | Published |
20130030102 | TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention provides a tire rubber composition which improves in fuel economy, processability, adhesion, and rubber strength in a balanced manner, and a pneumatic tire. The tire rubber composition includes: a rubber component; a plasticizer (a); and at least one of a resin and a plasticizer (b), the resin being at least one selected from the group consisting of aromatic petroleum resins, terpenic resins, and rosin resins. The plasticizer (a) has a glass transition point of −50° C. or lower. The resin and the plasticizer (b) each have a glass transition point of −40° C. to 20° C. The tire rubber composition includes, for each 100 parts by mass of the rubber component, 1 to 30 parts by mass of the plasticizer (a) and 1 to 30 parts by mass in total of the at least one of the resin and the plasticizer (b). | 01-31-2013 |
20130319589 | PNEUMATIC TIRE - The present invention provides a pneumatic tire that has improved handling stability while maintaining good fuel economy and tensile strength or even improving these properties. The pneumatic tire includes a tread including a rubber layer formed from a rubber composition that includes: carbon black; silica; and staple fibers with an average width of 3 nm to 50 μm and an average length of 50 nm to 500 μm, the staple fibers in the rubber layer having an average orientation angle between the longitudinal direction of each staple fiber and the circumferential direction of the tire of 15° to 75°, and the staple fibers in the rubber layer including 35 to 100% of staple fibers each having an orientation angle between its longitudinal direction and the circumferential direction of the tire of 15° to 75°. | 12-05-2013 |
20140256847 | RUBBER COMPOSITION, AND PNEUMATIC TIRE - Provided are a rubber composition achieving balanced improvement in processability, fuel economy, rubber strength, abrasion resistance, wet-grip performance, and handling stability, and a pneumatic tire including the composition. The rubber composition includes, per 100% by mass of a rubber component, at least 35% by mass of SR, the composition including a conjugated diene polymer and a silica having N | 09-11-2014 |
20140296376 | RUBBER COMPOSITION, AND PNEUMATIC TIRE - Provided are: a rubber composition a achieving balanced improvement in processability, fuel economy, rubber strength, abrasion resistance, wet-grip performance, and handling stability, and a pneumatic tire including the composition. Included is a rubber composition including a conjugated diene polymer and a silica having N | 10-02-2014 |
20140326386 | PNEUMATIC TIRE - Provided is a pneumatic tire ensuring conductivity while being reduced in weight, and having good fuel efficiency and handling stability. The tire includes a sidewall and a carcass, the sidewall including a laminate of two or more rubber layers including an inner sidewall layer ( | 11-06-2014 |
20140329930 | RUBBER COMPOSITION AND PNEUMATIC TIRE - Provided are a rubber composition achieving balanced improvements in fuel economy, wet-grip performance, abrasion resistance, and handling stability, and a pneumatic tire including the composition. The rubber composition includes a rubber component including at least 95% by mass of conjugated diene polymers having a Tg of −75-0° C. and a Mw of 1.5×10 | 11-06-2014 |
20140329931 | RUBBER COMPOSITION AND PNEUMATIC TIRE - Provided are a rubber composition improving wet-grip performance and its temperature dependence while ensuring good fuel economy, and a pneumatic tire including the composition. The composition includes, per 100% by mass of a rubber component: 5-55% by mass of an aromatic vinyl compound/conjugated diene compound copolymer (A) having an aromatic vinyl compound content of at least 5% by mass but less than 15% by mass and a vinyl bond content in a conjugated diene compound moiety of 10-70 mol %; and 5-75% by mass of an aromatic vinyl compound/conjugated diene compound copolymer (B) having an aromatic vinyl compound content of at least 15% by mass but less than 30% by mass and a vinyl bond content in a conjugated diene compound moiety of 10-70 mol %, and also includes, per 100 parts by mass of the rubber component, 10-150 parts by mass of a silica having a N | 11-06-2014 |
20150126674 | RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention provides a rubber composition capable of improving fuel economy and wet grip performance while maintaining good processability, abrasion resistance and handling stability or improving them, as well as a pneumatic tire including the rubber composition. The rubber composition contains carbon black, silica, and a polymer mixture obtained by modifying a polymer derived from a conjugated diene compound and/or an aromatic vinyl compound with a compound containing an ester group and/or a carboxyl group, the polymer mixture having a weight average molecular weight of from 1.0×10 | 05-07-2015 |