发明名称 |
Process for forming polyolefins |
摘要 |
Processes of forming polyolefins are described herein. One or more specific embodiments of the processes generally include introducing olefin monomer selected from C2-C3 olefins into a first reaction zone under first polymerization conditions to form a first polyolefin; withdrawing a transfer effluent from the first reaction zone, the transfer effluent including first polyolefin and unreacted olefin monomer; introducing the transfer effluent, a comonomer selected from C4-C8 olefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product; maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; and withdrawing at least a portion of the second reactor product, wherein the second reactor product includes a bimodal polyolefin. |
申请公布号 |
US9469698(B2) |
申请公布日期 |
2016.10.18 |
申请号 |
US201414264537 |
申请日期 |
2014.04.29 |
申请人 |
Chevron Phillips Chemical Company LP |
发明人 |
Kufeld Scott E.;Mutchler Joel A. |
分类号 |
C08F2/01;C08F10/02;C08L23/04;C08F2/00;C08L23/00;C08L23/10;C08F210/16 |
主分类号 |
C08F2/01 |
代理机构 |
|
代理人 |
Rhodes Monte R. |
主权项 |
1. A process of forming polyolefins comprising:
introducing olefin monomer selected from C2-C3 olefins into a first reaction zone under first polymerization conditions to form a first polyolefin; withdrawing a transfer effluent from the first reaction zone, the transfer effluent comprising first polyolefin and unreacted olefin monomer; introducing the transfer effluent, a comonomer selected from C4-C8 olefins, and additional olefin monomer to a second reaction zone under second polymerization conditions to form a second reactor product; maintaining an essentially constant comonomer:olefin monomer ratio in the second reaction zone; and withdrawing at least a portion of the second reactor product, wherein the second reactor product comprises a bimodal polyolefin. |
地址 |
The Woodlands TX US |