	US 12,479,984 B2
	Processes for producing polyethylene containing recycled polymeric material
Eric Clavelle, Calgary (CA); Yves Lacombe, Calgary (CA); Brian Molloy, Airdrie (CA); Niousha Kazemi, Calgary (CA); Mehdi Keshtkar, Calgary (CA); and Fazle Sibtain, Calgary (CA)
Assigned to NOVA Chemicals (International) S.A., Fribourg (CH)
Appl. No. 17/786,200
Filed by NOVA Chemicals (International) S.A., Fribourg (CH)
PCT Filed Dec. 16, 2020, PCT No. PCT/IB2020/062039 § 371(c)(1), (2) Date Jun. 16, 2022, PCT Pub. No. WO2021/124157, PCT Pub. Date Jun. 24, 2021.
Claims priority of provisional application 63/062,509, filed on Aug. 7, 2020.
Claims priority of provisional application 62/951,245, filed on Dec. 20, 2019.
Prior Publication US 2023/0045215 A1, Feb. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 23/06 (2006.01); C08J 11/04 (2006.01)

CPC C08L 23/06 (2013.01) [C08J 11/04 (2013.01); C08J 2300/30 (2013.01); C08J 2323/06 (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)]

19 Claims

1. A continuous polymerization process for the preparation of a polyethylene polymer blend product comprising a virgin polyethylene and a recycled polyethylene, wherein the continuous polymerization process comprises:

providing a slurry comprising the recycled polyethylene and a solvent to a continuous polymerization reactor; and

providing ethylene to the continuous polymerization reactor in the presence of a first catalyst system to provide the polyethylene polymer blend product comprising the virgin polyethylene and the recycled polyethylene;

wherein:

the recycled polyethylene is post-consumer and/or post-industrial polyethylene; and

the solvent comprises a C_5-12hydrocarbon, a C_5-12hydrocarbon substituted by a C_1-4alkyl group, or a combination thereof.