申请人:Schuchardt Jonathan L.
公开号:US06875879B2
公开(公告)日:2005-04-05
A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and an organometallic complex that incorporates a Group 3 to 10 transition metal and at least one chelating, dianionic triquinane ligand. The cis,syn,cis-triquinane framework is generated in three high-yield steps from inexpensive starting materials, and with heat and light as the only reagents. By modifying substituents on the triquinane ligand, polyolefin makers can control catalyst activity, comonomer incorporation, and polymer properties.
揭示了一种用于聚合烯烃的催化剂系统。该催化剂系统包括一个活化剂和一个含有第3至第10族过渡金属和至少一个螯合、二阴离子三萜配体的有机金属配合物。通过从廉价起始材料中经过三个高产率步骤生成顺式、合成、顺式三萜骨架,并且只需热和光作为试剂。通过修改三萜配体上的取代基,聚烯烃制造商可以控制催化剂活性、共聚单体掺入和聚合物性质。