Method for preparing terminal-modified conjugated diene polymer, terminal-modified conjugated diene polymer, rubber composition and tire |
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| 申请号 | US15503884 | 申请日 | 2015-07-02 | 公开(公告)号 | US10131722B2 | 公开(公告)日 | 2018-11-20 |
| 申请人 | BRIDGESTONE CORPORATION; | 发明人 | Narukuni Hirata; Yusuke Yamagata; Tomoe Tanabe; Shojiro Kaita; | ||||
| 摘要 | This disclosure is to provide a method for preparing a terminal-modified conjugated diene polymer which achieves an extremely high compounding amount of cis-1,4 without complicated preparing conditions, a terminal-modified conjugated diene polymer obtained via the method, a rubber composition containing the terminal-modified conjugated diene polymer, and a tire using the rubber composition. This disclosure is A method for preparing a terminal-modified conjugated diene polymer comprising: polymerizing a conjugated diene compound by using a polymerization catalyst composition and modifying a polymer obtained via the polymerization by using a modifier, wherein the polymerization catalyst composition contains a rare earth element compound, and a coordination compound having a cyclopentadiene skeleton selected from substituted or unsubstituted cyclopentadienes, substituted or unsubstituted indenes, and substituted or unsubstituted fluorenes, and wherein the polymerization and modification is performed in a one-pot way. | ||||||
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