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    • 6. 发明申请
    • Tire with silica-rich rubber tread for winter performance
    • 轮胎与二氧化硅丰富的橡胶胎面冬季表现
    • US20070293619A1
    • 2007-12-20
    • US11455917
    • 2006-06-19
    • Claude Charles JacobyDavid John Zanzig
    • Claude Charles JacobyDavid John Zanzig
    • C08K3/34
    • C08L9/00B60C1/0016C08K3/36C08L9/06C08L21/00C08L2666/08C08L2666/02
    • This invention relates to a tire having a tread intended for winter performance comprised cis 1,4-polybutadiene rubber (BR) and specialized solution polymerization prepared high vinyl styrene/butadiene rubber (HVS-SBR). Such tire tread is comprised of a compatible rubber blend of at least 40 phr of the BR in combination the HVS-SBR together with reinforcing filler composed of precipitated silica with a low BET nitrogen surface area and, optionally, rubber reinforcing carbon black. A disulfide silane based silica coupler is used to aid in coupling the precipitated silica to the elastomers. Compatibility of the combination of the BR with a relatively low glass transition temperature (Tg) of −100° C. or lower and the HVS-SBR with a relatively high Tg of at least 30° C. or higher, and therefore spaced apart Tg's of at least 70° C. is promoted by the high vinyl content of the HVS-SBR in a range of from about 40 to about 50 percent based upon its polybutadiene portion.
    • 本发明涉及一种具有用于冬季使用的胎面的轮胎,其包括顺式1,4-聚丁二烯橡胶(BR)和制备的高乙烯基苯乙烯/丁二烯橡胶(HVS-SBR)的专门溶液聚合。 这种轮胎胎面由HVS-SBR组合的至少40phr的BR与由低BET氮表面积的沉淀二氧化硅组成的增强填料和任选的橡胶增强炭黑组成的相容橡胶共混物组成。 使用二硫硅烷基二氧化硅偶联剂来帮助将沉淀二氧化硅偶联到弹性体上。 BR的组合与相对较低的玻璃化转变温度(Tg)为-100℃或更低的相容性和具有至少30℃或更高Tg的较高Tg的HVS-SBR,因此间隔开的Tg 基于其聚丁二烯部分,HVS-SBR的高乙烯基含量在约40至约50%的范围内促进至少70℃。