发明名称 |
PROCESS FOR PRODUCING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER, AND RUBBER COMPOSITION |
摘要 |
A process for simply and inexpensively producing a conjugated diene polymer with a narrow molecular weight distribution and a high cis-bond content at a low cost is provided. The process comprises a polymerization step, wherein a conjugated diene polymer having a cis-1,4-bond content of 98.5 mass % or more and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) measured by gel permeation chromatography of 2.5 or less is obtained by carrying out a polymerization reaction in conjugated diene compounds using a catalyst composition containing a rare earth element-containing compound or a reaction product of the rare earth element-containing compound with a Lewis base, an aluminoxane and/or organoaluminum compound, and an iodine-containing compound.
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申请公布号 |
US2009247695(A1) |
申请公布日期 |
2009.10.01 |
申请号 |
US20060096263 |
申请日期 |
2006.12.05 |
申请人 |
JSR CORPORATION;BRIDGESTONE CORPORATION |
发明人 |
NAKAMURA TAKAHIRO;TANI KOUICHIROU;TANAKA RYOUJI;SONE TAKUO;TADAKI TOSHIHIRO;KURAZUMI JUNKO;MASAKI KOJI;OZAWA YOICHI |
分类号 |
C08L9/00;C08F2/00;C08F4/12 |
主分类号 |
C08L9/00 |
代理机构 |
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