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    • 9. 发明申请
    • Diene Rubber Composition for Tire Including a Silica as a Reinforcing Filler
    • 用于轮胎的二烯橡胶组合物,包括二氧化硅作为增强填料
    • US20110152405A1
    • 2011-06-23
    • US12921540
    • 2009-03-09
    • Damien ThomassonEmmanuelle AllainJulien Hernandez
    • Damien ThomassonEmmanuelle AllainJulien Hernandez
    • C08K3/36B82Y30/00
    • B60C1/0016C08K3/36C08K5/548C08K9/02C08L21/00
    • A diene rubber composition for tires based on at least (i) one diene elastomer, (ii) one reinforcing inorganic filler and (iii) one coupling agent which provides the bonding between the inorganic filler and the elastomer. The inorganic filler comprises at least one silica capable of being obtained by the preparation process of the type comprising the reaction of a silicate with an acidifying agent, whereby a silica suspension is obtained, followed by the separation and the drying of this suspension. The reaction of the silicate with the acidifying agent is carried out according to the following successive stages: (i) an aqueous suspension of precipitated silica, exhibiting a pH of between 2.5 and 5.3, is brought into contact (mixing) with acidifying agent and silicate, in such a way that the pH of the reaction medium is maintained between 2.5 and 5.3, (ii) silicate is added to the reaction medium obtained, so as to increase the pH of the reaction medium up to a value of between 4.7 and 6.3.
    • 一种用于轮胎的二烯橡胶组合物,其至少基于(i)一种二烯弹性体,(ii)一种增强无机填料和(iii)提供无机填料和弹性体之间的结合的偶联剂。 无机填料包含至少一种能够通过包括硅酸盐与酸化剂的反应的制备方法获得的二氧化硅,由此获得二氧化硅悬浮液,然后分离和干燥该悬浮液。 硅酸盐与酸化剂的反应根据以下连续阶段进行:(i)沉淀二氧化硅的水性悬浮液,其pH值介于2.5和5.3之间,与酸化剂和硅酸盐接触(混合) 以使反应介质的pH保持在2.5和5.3之间的方式,(ii)将硅酸盐加入到所获得的反应介质中,以使反应介质的pH升高至4.7-6.3之间 。