公开(公告)号：US20050236087A1

公开(公告)日：2005-10-27

申请号：US10524856

申请日：2003-08-07

Applicant: Tomoyasu Nishizaki ,  Tomohiro Kusano

Inventor： Tomoyasu Nishizaki ,  Tomohiro Kusano

IPC: B60C1/00 ,  B60C15/06 ,  B60C17/00 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00

CPC classification number: B60C17/0009 ,  C08L7/00 ,  C08L9/00 ,  C08L21/00 ,  Y10T152/10846 ,  C08L2666/08

Abstract: A tire which has a bead filler (5) arranged on the outside in the tire radius direction of one pair of bead sections provided at the right and left thereof, one pair of side wall sections (6) provided in the right and left of a tread section, and a rubber reinforcing layer (7) arranged in the side wall section (6), characterized in that the rubber composition constituting the bead filler (5) or the rubber reinforcing layer (7) comprises a conjugated diene based polymer having a vinyl bond content of 25% or more, a weight average molecular weight (Mw) of 200,000 to 900,000 and a molecular weight distribution (Mw/Mn) represented by the ratio of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of 1 to 4 in an amount of 50 mass % or more of the rubber component thereof, and a resin and a curing agent therefor in a total amount of 3 parts by mass or more relative to 100 mass parts of the rubber, and exhibits a modulus of elasticity at 100% elongation at 25° C. of 5 MPa to 20 MPa and a dynamic modulus of elasticity at room temperature of 10.5 MPa or less.

Abstract translation: 一种轮胎，其具有在设置在其左右的一对胎圈部的轮胎半径方向上配置在外侧的胎圈填料（5），一对侧壁部（6）设置在左右的一侧 胎面部分和布置在侧壁部分（6）中的橡胶增强层（7），其特征在于，构成胎圈填料（5）或橡胶增强层（7）的橡胶组合物包括共轭二烯基聚合物，其具有 乙烯基键含量为25％以上，重均分子量（Mw）为200,000〜900,000，分子量分布（Mw / Mn）以重均分子量（Mw）与数均分子量 （Mn）为1〜4，其橡胶成分为50质量％以上，树脂及其固化剂相对于100质量份橡胶为3质量份以上， 并且在100％伸长率下呈现弹性模量 25℃下的离子为5MPa〜20MPa，室温下的动态弹性模量为10.5MPa以下。