发明名称 |
PROCESS FOR INCREASING THE EFFICIENCY OF A PRE-POLYMERIZED CATALYST |
摘要 |
The invention provides a process for pre-polymerizing olefin polymerization catalysts and a process for increasing the efficiency of pre-polymerized olefin polymerization catalysts. In one process of this invention an olefin monomer is added to a fluid carrier stream containing an olefin polymerization catalyst. The carrier stream containing the monomer and the catalyst is passed through an elongated tubular reactor at a flow rate sufficient to provide a residence time in the tubular reactor of less than 1 minute and under temperature conditions to pre-polymerize the catalyst within the tubular reactor without plugging of the reactor. In another process of this invention a pre-polymerized catalyst is contacted with a cocatalyst or a mixture of cocatalyst and an electron donor prior to introducing the catalyst into a polymerization reaction zone. |
申请公布号 |
KR950008153(B1) |
申请公布日期 |
1995.07.25 |
申请号 |
KR19870011261 |
申请日期 |
1987.10.12 |
申请人 |
COSDEN TECHNOLOGY INC. |
发明人 |
EWEN, JOHN A.;BITZER, ALAN H.;GRESSETT, DAVID L.;HUMMEL, HERBERT G. |
分类号 |
C08F4/64;B01J19/18;C08F2/00;C08F4/60;C08F4/642;C08F4/654;C08F4/659;C08F10/00;C08F10/06;C08F110/06;(IPC1-7):C08F10/00 |
主分类号 |
C08F4/64 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|