发明名称 |
GAS PHASE POLYMERIZATION OF OLEFINS |
摘要 |
Novel gas phase fluidized bed process for producing ethylene polymers having improved processability. Multiple reactors in series or parallel may be used to produce in-situ blended polymers. Each reactor can separately have a constrained geometry catalyst or a conventional Ziegler-Natta catalyst as needed for obtaining in-situ blended polymer with the desired properties as long as there is a constrained geometry catalyst in at least one reactor. Olefin polymers can be produced according to this invention having low susceptibility to melt fracture, even under high shear stress conditions.
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申请公布号 |
CA2171103(A1) |
申请公布日期 |
1995.03.23 |
申请号 |
CA19942171103 |
申请日期 |
1994.09.16 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
SWINDOLL, ROBERT D.;STORY, BRUCE A.;KOLTHAMMER, BRIAN W.S.;PEIL, KEVIN P.;WILSON, DAVID R. |
分类号 |
C08F2/34;C08F4/643;C08F10/02;(IPC1-7):C08F10/02 |
主分类号 |
C08F2/34 |
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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