Back to results
US 11,787,880 B2Granted
Highly soluble alkyl substituted carbenium borate as co-catalysts for olefin polymerizations
AssigneesDow Global Technologies LLC, Northwestern University
InventorsTobin J. Marks, Yanshan Gao, Tracy L. Lohr, Matthew D. Christianson, Jerzy Klosin, Edmund M. Carnahan, Andrew J. Young
Life of this patent
Estimating the term…
Abstract
Embodiments are directed to catalyst systems comprising: a procatalyst; and a co-catalyst, the co-catalyst comprising: a non-coordinating borate anion having the formula [B(C6F5)4]1− and a cation according to formula (I).
Claims15
A catalyst system comprising:
- a procatalyst;
- and
- a co-catalyst comprising:
- a non-coordinating borate anion having the formula [B(C6F5)4]1− and a cation according to formula (I):
- where:
- each R1, R2, R3, R4, and R5 is independently chosen from —H, —F, —Cl, substituted or unsubstituted (C4-C40)alkyl, substituted or unsubstituted (C4-C40)alkenyl or substituted or unsubstituted (C4-C40)cycloalkyl, wherein the substituted (C4-C40)alkyl and substituted (C4-C40)cycloalkyl are substituted with one or more RS, where each RS is chosen from (C1-C20)alkyl or halogen;
- provided that at least one of R1, R2, R3, R4, or R5 is chosen from substituted or unsubstituted (C4-C40)alkyl or substituted or unsubstituted (C4-C40)cycloalkyl.
4 more elements
A polymerization process for producing ethylene-based polymer, the process comprising:
- polymerizing ethylene and optionally one or more α-olefins in the presence of a catalyst system, the catalyst system comprising a catalyst and a co-catalyst dissolved in a non-halogenated hydrocarbon solvent, wherein the co-catalyst comprises:
- a non-coordinating borate anion having the formula [B(C6F5)4]1−
- a cation according to formula (I):
- where:
- each R1, R2, R3, R4, and R5 is independently chosen from —H, —F, —Cl, substituted or unsubstituted (C4-C40)alkyl, substituted or unsubstituted (C4-C40)alkenyl or substituted or unsubstituted (C4-C40)cycloalkyl, wherein the substituted (C4-C40)alkyl and substituted (C4-C40)cycloalkyl are substituted with one or more RS, where each RS is chosen from (C1-C20)alkyl or halogen;
- provided that at least one of R1, R2, R3, R4, or R5 is chosen from substituted or unsubstituted (C4-C40)alkyl or substituted or unsubstituted (C4-C40)cycloalkyl.
3 more elements
Dependencies are inferred from the claim text.