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    • 2. 发明授权
    • Tire with low hydrocarbon emission rubber combination of tread and sidewall components with compositional limitations
    • 轮胎与低碳氢化合物橡胶组合的胎面和侧壁组件具有组成限制
    • US07214731B2
    • 2007-05-08
    • US10778502
    • 2004-02-13
    • David John ZanzigMartin Paul CohenPaul Harry Sandstrom
    • David John ZanzigMartin Paul CohenPaul Harry Sandstrom
    • B60C1/00
    • C08L23/283B60C1/0016B60C1/0025C08K3/013C08K9/06C08L9/00C08L21/00C08L23/16Y10T152/10C08L2666/06C08L2666/08
    • The invention relates to a tire of a structural combination of tire tread and sidewall components with compositional limitations containing minimal, if any, of in situ formed alcohol and methyl isobutyl ketone byproducts. The tread component rubber composition contains pre-hydrophobated silica reinforcement. The sidewall component contains low unsaturation EPDM or brominated copolymer of isobutylene and p-methylstyrene and may contain pre-hydrophobated silica reinforcement. The silica reinforcement for said tread and sidewall components is a pre-hydrophobated precipitated silica. The pre-hydrophobated silica is prepared, prior to mixing with the elastomer(s), by reacting hydroxyl groups (e.g. silanol groups) contained on the surface of a precipitated silica with an alkoxyorganomercaptosilane or a combination of an alkoxyorganomercaptosilane and a substituted alkylsilane or with a bis-3(trialkoxysilylalkyl) polysulfide which contains an average of from 2 to 4 connecting sulfur atoms in its polysulfidic bridge to form a composite thereof. The alcohol byproduct therefrom is removed from the composite prior to its introduction into the rubber composition(s). In another aspect of the invention, the connecting sidewall rubber composition, and optionally the tread composition is free of N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine antidegradant (referred herein to as 6PPD) in order to prevent in situ formation of methyl isobutyl ketone byproduct from the reaction of 6PPD with atmospheric oxygen and/or ozone.
    • 本发明涉及轮胎胎面和侧壁部件的结构组合的轮胎,其组成限制包含原位形成的醇和甲基异丁基酮副产物的最小(如果有的话)。 胎面部件橡胶组合物含有预疏水化的二氧化硅增强物。 侧壁组分含有低不饱和度的EPDM或异丁烯和对甲基苯乙烯的溴化共聚物,并且可以含有预疏水化的二氧化硅增强物。 用于所述胎面和侧壁组分的二氧化硅增强剂是预疏水化沉淀二氧化硅。 将预疏水化的二氧化硅在与弹性体混合之前通过将沉淀二氧化硅的表面上所含的羟基(例如硅烷醇基)与烷氧基有机硅烷或烷氧基有机硅氧烷和取代的烷基硅烷的组合或与 在其多硫桥中含有平均2至4个连接硫原子的双-3(三烷氧基甲硅烷基烷基)多硫化物以形成其复合物。 在其引入橡胶组合物之前,将其醇副产物从复合材料中除去。 在本发明的另一方面,连接侧壁橡胶组合物和任选的胎面组合物不含N-(1,3-二甲基丁基)-N'-苯基对苯二胺抗降解剂(以下称为6PPD),以便 防止6PPD与大气氧和/或臭氧的反应原位形成甲基异丁基酮副产物。