发明名称 |
Process for producing a styrenic polymer |
摘要 |
There are disclosed a catalyst which comprises (A) a titanium compound having one pi electron-based ligand (e.g. pentamethylcyclopentadienyl group) or two same pi electron-based lignads and (B) an ionic compound comprising a non-coordinate anion and a cation of an element typifying the group 4 elements of the Periodic Table (e.g. triphenylcarbonium tetra(pentafluorophenyl)borate; a catalyst comprising (C) an alkylating agent (e.g. triisobutylaluminum) in addition to the components (A) and (B); and a process for producing a styrenic polymer by the use of any of the aforesaid catalysts. By using the aforementioned catalyst and process, a highly syndiotactic styrenic polymer can be efficiently produced.
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申请公布号 |
US5543481(A) |
申请公布日期 |
1996.08.06 |
申请号 |
US19950440135 |
申请日期 |
1995.05.12 |
申请人 |
IDEMITSU KOSAN CO., LTD. |
发明人 |
TAKEUCHI, MIZUTOMO;TOMOTSU, NORIO |
分类号 |
C08F4/16;C08F4/42;C08F4/64;C08F4/642;C08F4/643;C08F4/659;C08F4/6592;C08F10/00;C08F12/00;C08F12/04;(IPC1-7):C08F4/649;C08F12/08 |
主分类号 |
C08F4/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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