US 12,012,475 B2
Method of olefin polymerization using alkane-soluble non-metallocene precatalyst
Roger L. Kuhlman, Lake Jackson, TX (US); Bethany M. Neilson, Manvel, TX (US); John F. Szul, Hurricane, WV (US); and Ian M. Munro, Lake Jackson, TX (US)
Assigned to DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US)
Appl. No. 17/279,240
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Oct. 11, 2019, PCT No. PCT/US2019/055908
§ 371(c)(1), (2) Date Mar. 24, 2021,
PCT Pub. No. WO2020/096735, PCT Pub. Date May 14, 2020.
Claims priority of provisional application 62/771,699, filed on Nov. 27, 2018.
Claims priority of provisional application 62/756,237, filed on Nov. 6, 2018.
Claims priority of provisional application 62/756,236, filed on Nov. 6, 2018.
Prior Publication US 2021/0403615 A1, Dec. 30, 2021
Int. Cl. C08F 4/64 (2006.01); C08F 2/34 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08F 210/08 (2006.01); C08F 210/14 (2006.01); C08F 210/16 (2006.01)
CPC C08F 4/64148 (2013.01) [C08F 2/34 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08F 210/08 (2013.01); C08F 210/14 (2013.01); C08F 210/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of polymerizing an olefin monomer to make a first polyolefin composition comprising a first polyolefin polymer, the method comprising steps (A) to (C): (A) contacting a solution of a first alkane-soluble non-metallocene precatalyst dissolved in an alkane solvent with an activator so as to make a first trim catalyst comprising a first alkane-soluble non-metallocene catalyst; (B) feeding the first trim catalyst into a polymerization reactor; and (C) polymerizing the olefin monomer with the first trim catalyst in the polymerization reactor; thereby making the first polyolefin composition comprising the first polyolefin polymer; wherein the first alkane-soluble non-metallocene precatalyst is characterized by solubility in hexanes containing at least 60 weight percent n-hexane of at least 0.10 weight percent, based on total weight of the first alkane-soluble non-metallocene precatalyst and hexanes, measured using Solubility Test Method.