	US 12,479,985 B2
	Processes for producing polyethylene containing recycled non-polar polymeric material
Marcia Pires Fortes Ferreira, Calgary (CA); Marzieh Ebrahimi, Calgary (CA); Renee Anseeuw, Calgary (CA); Graham Lee, Calgary (CA); Gurpreet Kooner, Calgary (CA); and Fazle Sibtain, Calgary (CA)
Assigned to NOVA Chemicals (International) S.A., Fribourg (CH)
Appl. No. 17/785,328
Filed by NOVA CHEMICALS (INTERNATIONAL) S.A., Fribourg (CH)
PCT Filed Dec. 11, 2020, PCT No. PCT/IB2020/061840 § 371(c)(1), (2) Date Jun. 14, 2022, PCT Pub. No. WO2021/124054, PCT Pub. Date Jun. 24, 2021.
Claims priority of provisional application 62/951,356, filed on Dec. 20, 2019.
Prior Publication US 2023/0035963 A1, Feb. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 23/08 (2025.01); C08F 2/01 (2006.01); C08F 2/14 (2006.01); C08F 210/16 (2006.01); C08L 23/0807 (2025.01); C08J 3/00 (2006.01)

CPC C08L 23/0815 (2013.01) [C08F 2/01 (2013.01); C08F 2/14 (2013.01); C08F 210/16 (2013.01); C08J 3/005 (2013.01); C08J 2400/30 (2013.01); C08J 2423/06 (2013.01); C08J 2423/08 (2013.01); C08L 2205/025 (2013.01); C08L 2207/20 (2013.01)]

20 Claims

1. A continuous polymerization process for the preparation of a polyethylene polymer blend product, the polyethylene polymer blend product comprising a blend of a virgin polyethylene and a recycled non-polar polymer, in at least one polymerization reactor, wherein the continuous polymerization process comprises:

preparing a slurry of recycled non-polar polymer in a solvent;

providing the slurry of recycled non-polar polymer to a first continuous polymerization reactor;

providing ethylene and, optionally, at least one C₄to C₁₀alpha-olefin comonomer, to the first continuous polymerization reactor in the presence of a first catalyst system;

operating the first continuous polymerization reactor under solution polymerization conditions thereby producing a first polyethylene polymer blend product comprising polyethylene and the recycled non-polar polymer; and

discharging the first polyethylene polymer blend product from the first continuous polymerization reactor.