| 摘要 |
PURPOSE:To improve tire durability, by forming a belt or carcass with a rubber compounded composition containing the desired quantity of a conjugated diolefin polymer/copolymer contg. a trans-form, internal unsaturated bond in rubber hydrocarbon. CONSTITUTION:In 100pts.wt. rubber hydrocarbon, a rubber compounded composition is made up of containing more than 30pts.wt. a conjugated diolefin polymer and/or copolymer contg. a trans-form, internal unsaturated bond in the structural unit and the rubber compounded composition is used for either belt or carcass or both. As a monomer which comes to the principal ingredient of the conjugated diolefin polymer, 1,3-butadiene and 1,3-pentadiene are chosen. In this connection, it is desirable that a rate of 1,3-pentadiene in the conjugated polymer is in a range of 15-50wt%. In addition, as rubber hydrocarbon other than the polymer and copolymer, natural rubber, polyisoprene rubber, polybutadiene rubber and butadiene-styrene copolymer rubber are used in a range of less than 70pts.wt. |
