Method for Producing Modified Conjugated Diene-Based Polymer, Modified Conjugated Diene-Based Polymer, Modified Conjugated Diene-Based Polymer Composition, Rubber Composition and Tire
申请人:Yamada Chigusa
公开号:US20140213721A1
公开(公告)日:2014-07-31
A method for producing a modified conjugated diene-based polymer including
a polymerization step of obtaining a conjugated diene-based polymer having an active end by use of a polymerization initiator containing a compound having at least one nitrogen atom in a molecule and an organic lithium compound; and
a modification step of reacting a modifier represented by the following chemical formula (6) with the active end of the conjugated diene-based polymer:
wherein R
4
to R
7
each independently represent an alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 20 carbon atoms; R
8
represents an alkylene group having 3 to 10 carbon atoms; R
9
represents an alkylene group having 1 to 20 carbon atoms; m is an integer of 1 or 2; and n is an integer of 2 or 3.
一种生产改性共轭二烯基聚合物的方法,包括以下步骤:
1. 通过使用含有至少一个氮原子的化合物和有机锂化合物的聚合引发剂,进行聚合反应步骤,以获得具有活性端的共轭二烯基聚合物。
2. 使用以下化学式(6)表示的改性剂与共轭二烯基聚合物的活性端反应,进行改性步骤:
其中,R4至R7各自独立地表示具有1至20个碳原子的烷基或具有6至20个碳原子的芳基;R8表示具有3至10个碳原子的烷基;R9表示具有1至20个碳原子的烷基;m为1或2的整数;n为2或3的整数。