US 11,999,763 B2
Organometallic complex, olefin polymerization catalyst system and polymerization process
Cheng Fan, Calgary (CA); Charles Carter, Calgary (CA); Darryl Morrison, Calgary (CA); Xiaoliang Gao, Calgary (CA); James T. Goettel, Calgary (CA); Daisy Cruz-Milette, Calgary (CA); and Frederick Chiu, Calgary (CA)
Assigned to NOVA CHEMICALS (INTERNATIONAL) S.A., Fribourg (CH)
Filed by NOVA CHEMICALS (INTERNATIONAL) S.A., Fribourg (CH)
Filed on Oct. 12, 2023, as Appl. No. 18/379,510.
Application 18/379,510 is a continuation of application No. PCT/IB2023/052757, filed on Mar. 21, 2023.
Claims priority of provisional application 63/344,881, filed on May 23, 2022.
Claims priority of provisional application 63/322,409, filed on Mar. 22, 2022.
Prior Publication US 2024/0124502 A1, Apr. 18, 2024
Int. Cl. C07F 15/00 (2006.01); C07F 9/535 (2006.01); C07F 9/572 (2006.01)
CPC C07F 9/5355 (2013.01) [C07F 9/5728 (2013.01)] 26 Claims
 
1. An organometallic complex represented by formula I:

OG Complex Work Unit Chemistry
wherein
M is Ti, Zr or Hf,
R1 and R2 are each independently selected from the group consisting of hydrogen and RX; or R1 and R2 together with the P atom to which they are attached form a 3-10 membered heterocyclic group which is unsubstituted or further substituted by one or more substituent selected from the group consisting of a halogen atom, a C1-20 alkyl group, a C1-20 alkoxy group, a C7-20 alkylaryl group, a C7-20 arylalkyl group, a C6-20 aryl group, a C6-20 aryloxy group, a C7-20 alkylaryloxy group, and a C7-20 arylalkyloxy group;
each RX is independently selected from the group consisting of a halogen atom; a C1-30 hydrocarbyl group, which hydrocarbyl group is unsubstituted or further substituted by one or more than one halogen atom, C1-20 alkyl group, C1-20 alkoxy group, C7-20 alkylaryl group, C7-20 arylalkyl group, C6-20 aryl group, C6-20 aryloxy group, C7-20 alkylaryloxy group, and/or C7-20 arylalkyloxy group; an amido group of the formula —NR′2; a silyl group of the formula —Si(Ra)3; a germanyl group of the formula —Ge(Ra)3; and a phosphinimine group of the formula —N═P(Rb)(Rc)(Rd); wherein each R′ is independently selected from the group consisting of hydrogen, C1-20 alkyl group, and C6-20 aryl group; wherein each Ra is independently selected from the group consisting of hydrogen, C1-8 alkyl group, C1-8 alkoxy group, C6-20 aryloxy group and C6-20 aryl group; and Rb, Rc, Rd, are each independently a C1-20 alkyl group;
each X1 is an activatable ligand;
Cy is a cyclopentadienyl-type ligand covalently bound to L and coordinated to M via η-bonding; and
L is a bridging group containing a contiguous chain of atoms connecting P with Cy, wherein the contiguous chain of atoms consists of 2 or 3 atoms.