	US 12,351,657 B2
	Controlling long-chain branch content with dual activator-supports
Max P. McDaniel, Bartlesville, OK (US); Graham R. Lief, Bartlesville, OK (US); Qing Yang, Bartlesville, OK (US); Carlos A. Cruz, Kingwood, TX (US); Yongwoo Inn, Bartlesville, OK (US); and Jared Barr, Bartlesville, OK (US)
Assigned to Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed by Chevron Phillips Chemical Company LP, The Woodlands, TX (US)
Filed on Sep. 12, 2024, as Appl. No. 18/882,898.
Application 18/882,898 is a division of application No. 17/552,451, filed on Dec. 16, 2021, granted, now 12,122,857.
Prior Publication US 2025/0011481 A1, Jan. 9, 2025
Int. Cl. C08F 4/02 (2006.01); C07F 17/00 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 10/02 (2006.01); C08F 10/14 (2006.01); C08F 210/16 (2006.01); C08L 23/08 (2025.01); C08L 23/0807 (2025.01)

CPC C08F 10/02 (2013.01) [C07F 17/00 (2013.01); C08F 4/02 (2013.01); C08F 4/025 (2013.01); C08F 4/65916 (2013.01); C08F 10/14 (2013.01); C08L 23/0815 (2013.01); C08F 210/16 (2013.01)]

14 Claims

1. A polymerization process comprising:

(a) contacting a metallocene compound, an organoaluminum compound, a first activator-support, and a second activator-support to form a catalyst composition; wherein:

the first activator-support comprises a fluorided silica-coated alumina; and

the second activator-support comprises a sulfated bentonite;

(b) contacting the catalyst composition with ethylene and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an ethylene polymer having a long chain branch (LCB) content; and

(c) controlling a relative amount of the first activator-support and the second activator-support in the catalyst composition in step (a) to adjust the LCB content of the ethylene polymer.