申请人:Momentive Performance Materials Inc.
公开号:US11267955B2
公开(公告)日:2022-03-08
A silane based additive, rubber formulations including the additive and tires having tread portions made with the additive, together with methods of forming those products, are provided. Uncured rubber formulations in accordance with preferred embodiments of the invention comprise (1) a rubbery primary polymer or polymer blend, such as natural rubber and/or synthetic rubber; (2) reinforcing silica filler; (3) a network forming monomer or polymer, especially a thermosetting network forming moiety, for forming a secondary polymeric network; and (4) a silane containing one or more moieties of the aforementioned network forming polymer. In particular networks which can be generated in-situ are preferred. The cured rubber formulation should comprise the silica, having the secondary polymer network coupled thereto, within the rubber matrix, and not directly to the rubber chains via sulfidic linkages.
本发明提供了一种硅烷基添加剂、包括该添加剂的橡胶配方和使用该添加剂制造胎面部分的轮胎,以及形成这些产品的方法。根据本发明优选实施例的未硫化橡胶配方包括:(1)橡胶状主聚合物或聚合物混合物,如天然橡胶和/或合成橡胶;(2)补强白炭黑填料;(3)网络形成单体或聚合物,特别是热固性网络形成分子,用于形成二级聚合物网络;以及(4)含有上述网络形成聚合物的一个或多个分子的硅烷。尤其是可在原位生成的网络更受欢迎。硫化橡胶配方应包括橡胶基质中的二氧化硅,其上耦合有二级聚合物网络,而不是通过硫酸连接直接与橡胶链相连。