发明名称 |
Tire with tread of specialized trans 1,4-polybutadiene polymer and cis 1,4-polyisoprene natural rubber |
摘要 |
<p>This invention relates to a tire with a tread of a natural rubber-rich rubber composition. A partial replacement of the natural rubber in the tire tread is accomplished by an inclusion of a relatively low Mooney viscosity specialized trans 1,4-polybutadiene. The tire tread rubber composition is comprised of a blend of the specialized trans 1,4-polybutadiene polymer and cis 1,4-polyisoprene natural rubber optionally together with at least one additional diene-based elastomer in which the natural rubber remains a major portion of the elastomers in the tread rubber composition. A significant aspect of the invention is a partial replacement of natural cis 1,4-polyisoprene rubber in the tread rubber composition. The specialized trans 1,4-polybutadiene polymer has a relatively low Mooney (ML1+4), 100 DEG C, viscosity within a range of 25 to 55. The specialized trans 1,4-polybutadiene polymer has a weight average molecular weight (Mw) of less than 220,000, a number average molecular weight (Mn) of less than 120,000, and a microstructure comprised of a trans 1,4- isomeric unit content in a range of from 70 to 90 percent.</p> |
申请公布号 |
EP1593528(A1) |
申请公布日期 |
2005.11.09 |
申请号 |
EP20050103529 |
申请日期 |
2005.04.28 |
申请人 |
THE GOODYEAR TIRE & RUBBER COMPANY |
发明人 |
SANDSTROM, PAUL HARRY;HALASA, ADEL FARHAN;HSU, WEN-LIANG;BEERS, ROGER NEIL;JASIUNAS, CHAD AARON |
分类号 |
B60C1/00;C08K3/00;C08K5/548;C08L7/00;C08L9/00;C08L9/06;C08L21/00;(IPC1-7):B60C1/00 |
主分类号 |
B60C1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|