发明名称 |
TIRE TREAD FOR IMPROVED WEAR PROPERTIES |
摘要 |
Rubber articles, including tires and tire treads, that are manufactured from a rubber composition that includes a functionalized styrene-butadiene rubber (SBR) and a polybutadiene rubber, wherein the functionalized SBR includes a functional group attached as an active moiety and wherein the butadiene portion of the SBR has as trans-1,4 content of between 30 wt. % and 70 wt. %. The rubber composition further includes a plasticizing system having a plasticizing resin having a glass transition temperature (Tg) of at least 25° C. and a plasticizing liquid, wherein the plasticizing system is added in an effective amount to provide the rubber composition with a glass transition temperature of between −25° C. and −15° C. and with a dynamic modulus G* at 60° C. of between 0.8 MPa and 1.3 MPa. The rubber composition is reinforced with a silica filler. |
申请公布号 |
US2015087745(A1) |
申请公布日期 |
2015.03.26 |
申请号 |
US201214388839 |
申请日期 |
2012.03.30 |
申请人 |
Chekanov Yuri A;Stubblefield Raymond |
发明人 |
Chekanov Yuri A;Stubblefield Raymond |
分类号 |
B60C1/00;C08L9/06;B60C11/00 |
主分类号 |
B60C1/00 |
代理机构 |
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代理人 |
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主权项 |
1. A tread for a tire, the tread comprising a rubber composition that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per hundred parts by weight of rubber (phr):
100 phr of rubber selected from between 50 phr and 85 phr of a functionalized styrene-butadiene rubber (SBR) and between 15 phr and 50 phr of a polybutadiene rubber, wherein the functionalized SBR includes a functional group attached as an active moiety and wherein the butadiene portion of the SBR has as trans-1,4 content of between 30 wt. % and 70 wt. %; a plasticizing system comprising a plasticizing resin having a glass transition temperature (Tg) of at least 25° C. and a plasticizing liquid, wherein the plasticizing system is added in an effective amount to provide the rubber composition with a glass transition temperature of between −25° C. and −15° C. and with a dynamic modulus G* at 60° C. of between 0.8 MPa and 1.3 MPa; between 60 phr and 125 phr of a silica filler; and a sulfur curing system. |
地址 |
Simpsonville SC US |