发明名称 |
Process to prepare ethylene propylene elastomer |
摘要 |
A solution polymerization process for the preparation of elastomeric ethylene propylene (diene) elastomers is characterized by the use of a) an unbridged catalyst having a cyclopentadienyl ligand and a monosubstituted nitrogen ligand; and b) a boron activator. High molecular weight elastomers may be inexpensively prepared by the process of this invention. The elastomers are suitable for the manufacture of rubber sheets or membranes and automotive parts such as seals, belts, hoses and tire sidewalls.
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申请公布号 |
US6486276(B1) |
申请公布日期 |
2002.11.26 |
申请号 |
US20010862189 |
申请日期 |
2001.05.21 |
申请人 |
NOVA CHEMICALS (INTERNATIONAL) S.A. |
发明人 |
WANG QINYAN;BROWN STEPHEN JOHN |
分类号 |
C08F4/643;C08F4/645;C08F4/659;C08F4/6592;C08F210/16;C08F210/18;(IPC1-7):C08F4/16;C08F4/44;C08F210/06 |
主分类号 |
C08F4/643 |
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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