Cyclopentadienyl-Substituted Salan Catalysts

摘要

A cyclopentadienyl-substituted Salan catalyst, a catalyst system comprising an activator and the cyclopentadienyl-substituted Salan catalyst, a process comprising contacting one or more olefins with the catalyst system, and polymers produced by the process are disclosed herein.

主权项

1. A catalyst compound represented by the formula: wherein each solid line represents a covalent bond and each arrow represents a bond having a varying degree of covalency and a varying degree of coordination; wherein M is a Group 3, 4, 5 or 6 transition metal; N1 and N2 are nitrogen; O is oxygen; each of X1 and X2 is, independently, a univalent C1 to C20 hydrocarbyl radical, a functional group comprising elements from Groups 13 to 17 of the periodic table of the elements, or X1 and X2 join together to form a C4 to C62 cyclic or polycyclic ring structure, provided however when M is trivalent X2 is not present; wherein each of R*1 and R*2 independently comprises a bulky functional group, an electron withdrawing group, or a combination thereof, and wherein at least one of R*1 and R*2 independently comprises a cyclopentadienyl radical having the structure: wherein C* indicates an attachment carbon of the radical; each R1, R2, R3, R4, R5, R6, R8, R9, R10, R11, R12, R13, R14, R15, R16, and R17 is independently, hydrogen, a C1-C40 hydrocarbyl radical, a functional group comprising elements from Groups 13 to 17 of the periodic table of the elements, two or more of R1, R2, R3, R4, R5, R6, R8, R9, R10, R11, R12, R13, R14, R15, R16, and R17 independently join together to form a C4 to C62 cyclic or polycyclic ring structure, or a combination thereof; R7 is a C1-C40 hydrocarbyl radical or a functional group comprising elements from Groups 13 to 17 of the periodic table of the elements; and Y is a divalent C1 to C20 hydrocarbyl radical.