摘要:
Racemic isomers of metal complexes of Groups 3, 4 or the Lanthanides, addition polymerization catalysts containing the same and olefin polymerization processes using the same comprising a boratabenzene group or divalent derivative thereof are disclosed.
摘要:
Metal complexes, addition polymerization catalysts containing the same and olefin polymerization processes using the same comprising a boratabenzene group or divalent derivative thereof are disclosed.
摘要:
A catalyst and process of polymerizing olefins using it are described, the catalyst comprising a cocatalyst and a metal complex preferably of the formulas 4-9, wherein M is a group 4 metal, Z is a boron atom, and T is one of
摘要:
A Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing electron donating group, especially an amido group.
摘要:
Metal complexes, catalysts derived therefrom, and polymerization processes using the same, characterized by the presence of one or more nitrogen and boron containing, anionic 5-membered cyclic ligand groups, especially 1,2-azaborolyl groups, are disclosed.