发明名称 |
SINGLE-SITE CATALYSTS BASED ON CAGED DIIMIDE LIGANDS |
摘要 |
Single-site catalysts useful for polymerizing olefins are disclosed. The organometallic catalysts incorporate a Group 3 to 10 transition, lanthanide or actinide metal and a caged diimide ligand. The diimide ligands are made by a tandem Diels-Alder and photochemical [2+2] cycloaddition sequence to give a multicyclic dione, followed by condensation with a primary amine. Because a wide variety of caged diimide ligands are easy to prepare from commercially available dienes and dienophiles, the invention enables the preparation of a new family of single-site catalysts. Based on their unique structure and geometry, the catalysts offer polyolefin producers new ways to improve activity, control comonomer incorporation, or regulate polyolefin tacticity.
|
申请公布号 |
WO0232972(A1) |
申请公布日期 |
2002.04.25 |
申请号 |
WO2001US26870 |
申请日期 |
2001.08.29 |
申请人 |
EQUISTAR CHEMICALS, LP |
发明人 |
HLATKY, GREGORY, G.;SCHUCHARDT, JONATHAN, L. |
分类号 |
C07C251/20;C07F15/04;C07F15/06;C08F4/70;C08F10/00;(IPC1-7):C08F10/00;C07C249/02 |
主分类号 |
C07C251/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|