Patent application number | Description | Published |
20090005481 | Rubber composition for tire, tire member and tire - A rubber composition for a tire comprising a rubber component containing at least one of a natural rubber and an epoxidized natural rubber, not less than 15 parts by mass of silica based on 100 parts by mass of the rubber component, and not less than 0.5 part by mass of calcium stearate based on 100 parts by mass of the rubber component, a tire member made using the rubber composition for a tire, and a tire made using the tire member. | 01-01-2009 |
20110136961 | TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE - It is an object of the present invention to provide a tire rubber composition excellent in performances such as silica dispersibility and processability. The present invention relates to a tire rubber composition, comprising: a rubber component that contains an epoxidized natural rubber; silica; and a silane coupling agent, wherein the amount of the epoxidized natural rubber in 100% by mass of the rubber component is 15% by mass or more, the silica has a CTAB specific surface area of 180 m | 06-09-2011 |
20110136962 | TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE - It is an object of the present invention to provide a tire rubber composition excellent in performances such as silica dispersibility and processability. The present invention relates to a tire rubber composition, comprising: a rubber component; silica; and a silane coupling agent, wherein the silica has a CTAB specific surface area of 180 m | 06-09-2011 |
20120214918 | RUBBER COMPOSITION FOR TIRES AND PNEUMATIC TIRE - The present invention provides a rubber composition for a tire in which the reaction rate between a silane coupling agent and silica is increased to enhance the fuel economy and the abrasion resistance, and a pneumatic tire comprising a component of any kind produced using the rubber composition for a tire. The present invention relates to a rubber composition for a tire, comprising: silica; a silane coupling agent; and at least one selected from the group consisting of a hydroxy acid, itaconic acid, and a salt thereof. | 08-23-2012 |
20120283354 | TYRE RUBBER COMPOSITION AND PNEUMATIC TYRE - The present invention provides a tire rubber composition which has good silica dispersibility and improves in terms of the reinforcement, the abrasion resistance, the mechanical strength, the rolling resistance, the wet grip performance, and the handling stability on a dry road surface in a balanced manner; and provides a pneumatic tire produced using the tire rubber composition. The present invention relates to a tire rubber composition, comprising: a rubber component; a first silica; and a second silica, wherein the first silica has a CTAB specific surface area of 180 m | 11-08-2012 |
20130012660 | TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention provides a tire rubber composition with which the grip performance, the abrasion resistance, and the performance in terms of rolling resistance are improved in a balanced manner. The present invention relates to a tire rubber composition comprising: a modified diene rubber A which is modified with a specific acrylamide compound; and a modified diene rubber B which is modified with a specific modifying compound alone or together with a specific silicon or tin compound, a weight average molecular weight of a total of the modified diene rubbers A and B being 300,000 to 1,400,000. | 01-10-2013 |
20130036790 | METHOD FOR ESTIMATING WEAR RESISTANCE OF TREAD PORTION OF TIRE - A method for estimating wear resistance of a tread portion of a tire comprises: a tire manufacturing step in which the tire to be evaluated is manufactured; a rubber seat sampling step in which an evaluation rubber seat is cut out from the tread portion of the tire to include a part of the tread surface; an abrasion step in which the rubber seat is subjected to abrasion by the use of an indoor wear testing machine; and a wear resistance estimating step in which the wear resistance of the tire is estimated based on a state of the wear of the rubber seat caused in the abrasion step. | 02-14-2013 |
20140196822 | PNEUMATIC TIRE - [Object] To provide a pneumatic tire | 07-17-2014 |
20140323660 | RUBBER COMPOSITION FOR TIRE, AND PNEUMATIC TIRE - The present invention provides a rubber composition for tires which achieves a balanced improvement in rolling resistance, abrasion resistance, and wet-skid performance while providing excellent processability; and a pneumatic tire including the rubber composition. The present invention relates to a rubber composition for tires, including: a modified diene rubber A which has been terminally modified with a specific acrylamide compound; a modified diene rubber B which has been modified with a silicon or tin compound and a specific modifying compound or with the modifying compound; and a silane coupling agent containing a mercapto group, the modified diene rubbers A and B, taken as a whole, having a weight average molecular weight falling within a specific range. | 10-30-2014 |
20140371372 | TIRE RUBBER COMPOSITION AND PNEUMATIC TIRE - The present invention provides a rubber composition for tires which enables a balanced improvement in rolling resistance, abrasion resistance, and wet-skid performance. The present invention relates to a rubber composition for tires, including a rubber blend including a diene rubber A modified with a specific acrylamide compound, and a diene rubber B modified with either a combination of a specific silicon or tin compound and a specific modifying compound or with the modifying compound, the combined rubbers A and B having a weight average molecular weight of 300,000 to 1,400,000; and a specific silica. | 12-18-2014 |
20140373989 | TIRE - The present invention aims to provide a tire having improved abrasion resistance and appearance, as well as reduced rolling resistance and therefore improved fuel economy. The present invention relates to a tire including a tread, the tread containing 0.9 to 1.5% by mass of a wax, 0.9 to 1.5% by mass of an amine antioxidant, 0.3 to 1.0% by mass of a quinoline antioxidant, and a tread rubber component containing 3% by mass or more of a polybutadiene rubber, the tread having a rubber thickness between a tread groove bottom and an outermost belt-reinforcing layer of 0.1 to 2.0 mm. | 12-25-2014 |