| abstract |
Disclosed is a novel bidentate pyridine transition metal catalyst having general formula (1), where Y is O, S, NR, (2), or (3), each R is independently selected from hydrogen or C1 to C6 alkyl, each R' is independently selected from C1 to C6 alkyl, C1 to C6 alkoxy, C6 to C16 aryl, halogen, or CF3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C1 to C6 alkyl, C1 to C6 alkoxy, or (4), L is X, cyclopentadienyl, C1 to C6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or (5), 'm' is 0 to 4, and 'n' is 1 to 4. Also disclosed is a method of making a poly-α-olefin comprising polymerizing an α-olefin monomer using that catalyst or a catalyst that has general formula (6), where Y, M, L, X, and R' were previously defined and each 'p' is independently selected from 0 to 3. |