US 12,441,819 B2
Titanium biphenylphenol polymerization catalysts
Rhett A. Baillie, Pearland, TX (US); Roger L Kuhlman, Lake Jackson, TX (US); and Liam P. Spencer, Lake Jackson, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/771,841
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Nov. 4, 2020, PCT No. PCT/US2020/058804
§ 371(c)(1), (2) Date Apr. 26, 2022,
PCT Pub. No. WO2021/091959, PCT Pub. Date May 14, 2021.
Claims priority of provisional application 62/930,432, filed on Nov. 4, 2019.
Prior Publication US 2022/0396647 A1, Dec. 15, 2022
Int. Cl. C08F 4/64 (2006.01); C07F 7/28 (2006.01); C08F 4/02 (2006.01); C08F 4/52 (2006.01); C08F 4/76 (2006.01); C08F 10/02 (2006.01); C08F 110/02 (2006.01)
CPC C08F 4/76 (2013.01) [C07F 7/28 (2013.01); C08F 4/02 (2013.01); C08F 4/64193 (2013.01); C08F 110/02 (2013.01); C08F 4/64 (2013.01)] 14 Claims
 
1. A titanium biphenylphenol polymerization precatalyst of Formula I:

OG Complex Work Unit Chemistry
wherein each of R7 and R8 is independently a C1 to C20 alkyl, aryl, aralkyl or a hydrogen; wherein each of R5 and R10 is a dialkyl or trialkyl substituted silyl;
wherein each of R2 and R13 is independently a C1 to C20 alkyl, aryl, aralkyl or a hydrogen; wherein each of R15 and R16 is a 2,7-disubstituted carbazolyl or a 3,6-disubstituted carbazolyl;
wherein L is a C2-C4 alkylene that forms a 2-carbon bridge, 3-carbon bridge, or a 4-carbon bridge respectively, between the two oxygen atoms to which L is covalently bonded;
wherein each of R1, R3, R4, R6, R9, R11, R12, and R14 is independently a halide or a hydrogen; and
wherein each X is independently a hydrocarbyl, halide, pseudohalide, hydroxy group, alkoxy group, phenoxy group, aryloxy group, or a hydrogen and at least one X is not a hydrocarbyl.