发明名称 |
Prepolymerized catalyst and use thereof |
摘要 |
A prepolymerized olefin polymerization catalyst, its prepration, and use are disclosed. The catalyst is prepared by contacting a solid particulate transition metal-containing olefin polymerization catalyst with an olefin in a confined zone under suitable conditions wherein the prepolymerization is conducted under conditions such that the olefin is added to the confined zone at a rate such that the pressure in the confined zone increases no more than about 0.5 psig/sec. during the olefin addition.
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申请公布号 |
US5985783(A) |
申请公布日期 |
1999.11.16 |
申请号 |
US19930067880 |
申请日期 |
1993.05.27 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
MITCHELL, KENT E. |
分类号 |
C08F4/658;C08F4/60;C08F4/651;C08F10/00;(IPC1-7):B01J31/00 |
主分类号 |
C08F4/658 |
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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