MODIFIED CONJUGATED DIENE POLYMER AND METHOD FOR PRODUCING SAME, POLYMER COMPOSITION, CROSSLINKED POLYMER, AND TIRE
申请人:JSR Corporation
公开号:EP2963066A1
公开(公告)日:2016-01-06
There is obtained a rubber composition which can improve low fuel consumption performance, workability, and abrasion resistance at the same time in uses of automobile tires and the like. A modified conjugated diene polymer is produced by a method comprising: a polymerization step of polymerizing a conjugated diene compound or polymerizing a conjugated diene compound and an aromatic vinyl compound to obtain a conjugated diene polymer having an active end in the presence of a metal amide compound obtained by mixing an alkali metal compound or an alkaline earth metal compound with a secondary amine compound and a first modification step of reacting the active end with the following compound (C1):
(C1) a compound having a functional group (a) that interacts with silica, having one or more linear structures where three or more groups or atoms in total derived from at least either of a methylene group and a divalent atom are linearly connected, and capable of binding to a plurality of the active ends.
本发明获得了一种橡胶组合物,该组合物在汽车轮胎等用途中可同时改善低油耗性能、加工性和耐磨性。改性共轭二烯聚合物的生产方法包括:聚合步骤,在碱金属化合物或碱土金属化合物与仲胺化合物混合得到的金属酰胺化合物存在下,聚合共轭二烯化合物或聚合共轭二烯化合物和芳香乙烯基化合物,以获得具有活性端的共轭二烯聚合物;第一改性步骤,使活性端与下列化合物(C1)反应:
(C1) 具有与二氧化硅相互作用的官能团(a)的化合物,该化合物具有一个或多个线性结 构,其中三个或三个以上的基团或原子至少从亚甲基和二价原子中的任一基团或原子线性连 接,并能与多个活性末端结合。