US 12,252,574 B2
Bis-phenyl-phenoxy polyolefin procatalysts having two anthracenyl ligands
Ruth Figueroa, Midland, MI (US); Robert D. Grigg, Midland, MI (US); Jerzy Klosin, Midland, MI (US); Tulaza Vaidya, Royersford, PA (US); and Carl N. Iverson, Los Alamos, NM (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Filed by Dow Global Technologies LLC, Midland, MI (US)
Filed on Oct. 10, 2023, as Appl. No. 18/472,617.
Application 18/472,617 is a continuation of application No. 17/267,587, abandoned, previously published as PCT/US2019/049015, filed on Aug. 30, 2019.
Claims priority of provisional application 62/725,074, filed on Aug. 30, 2018.
Prior Publication US 2024/0084050 A1, Mar. 14, 2024
Int. Cl. C07F 7/00 (2006.01); C08F 4/64 (2006.01); C08F 4/659 (2006.01); C08F 210/16 (2006.01)
CPC C08F 4/65908 (2013.01) [C07F 7/00 (2013.01); C08F 4/64193 (2013.01); C08F 210/16 (2013.01)] 19 Claims
 
1. A catalyst system comprising a metal-ligand complex according to formula (I):

OG Complex Work Unit Chemistry
where:
M is a metal chosen from zirconium or hafnium, the metal being in a formal oxidation state of +2, +3, or +4;
n is 0, 1, or 2;
when n is 1, X is a monodentate ligand or a bidentate ligand;
when n is 2, each X is independently a monodentate ligand;
the metal-ligand complex is overall charge-neutral;
L is —CH2(RC)2CH2—, —CH(CH3)CH2CH(CH3)—, cyclohexane-1,2-diyldimethyl, or —CH2(CH2)nCH2— where n is from 1 to 3;
either:
A1 and A2 are

OG Complex Work Unit Chemistry
or
A1 is

OG Complex Work Unit Chemistry
and A2 is

OG Complex Work Unit Chemistry
R1 and R10 are selected from the group consisting of (C3-C10)alkyl, —Si (RC)3, and —Ge(RC)3;
R2, R4, R5, R6, R7, and R9 are selected from the group consisting of (C3-C10)alkyl, —Si(RC)3, —Ge(RC)3, and —H, provided at least one of R2, R4, or R5 are (C3-C10)alkyl, —Si(RC)3, or —Ge (RC)3 and at least one of R6, R7, or R9 are (C3-C10) alkyl, —Si(RC)3, or —Ge(RC)3;
R3 and R8 are selected from the group consisting of (C1-C50)alkyl, (C6-C50)aryl, (C6-C50)heteroaryl, and —H;
R11, R12, R13, R14, R15, R16, R17, and R18 are independently selected from the group consisting of (C1-C20)alkyl, (C1-C20)heteroalkyl, —Si(RC)3, —ORC, —CF3, halogen, and —H; and
each RC in formula (I) is independently (C1-C20)alkyl or —H.