	US 12,240,933 B2
	Processes for preparing metallocene-based catalyst systems for the control of long chain branch content
Qing Yang, Bartlesville, OK (US); Max P. McDaniel, Bartlesville, OK (US); and Tony R. Crain, Niotaze, KS (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 Feb. 23, 2024, as Appl. No. 18/585,446.
Application 18/489,106 is a division of application No. 17/412,341, filed on Aug. 26, 2021, granted, now 11,845,826, issued on Dec. 19, 2023.
Application 18/585,446 is a continuation of application No. 18/489,106, filed on Oct. 18, 2023, granted, now 11,945,897.
Prior Publication US 2024/0247085 A1, Jul. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 4/659 (2006.01); C08F 4/64 (2006.01); C08F 4/6592 (2006.01); C08F 10/02 (2006.01); C08F 110/02 (2006.01); C08F 210/16 (2006.01); C08F 4/52 (2006.01)

CPC C08F 4/65912 (2013.01) [C08F 4/65916 (2013.01); C08F 4/65927 (2013.01); C08F 110/02 (2013.01); C08F 210/16 (2013.01); C08F 4/52 (2013.01); C08F 4/64 (2013.01); C08F 2410/07 (2021.01); C08F 2500/09 (2013.01)]

21 Claims

1. A process to produce a catalyst composition, the process comprising:

(a) contacting a metallocene compound, a hydrocarbon solvent, and a first organoaluminum compound for a first period of time to form a metallocene solution; and

(b) contacting the metallocene solution with an activator-support and a second organoaluminum compound for a second period of time to form the catalyst composition,

wherein:

the first organoaluminum compound comprises triisobutylaluminum and/or tri-n-octylaluminum;

the second organoaluminum compound comprises trimethylaluminum, triethylaluminum, tri-n-propylaluminum, tri-n-butylaluminum, triisobutylaluminum, tri-n-hexylaluminum, tri-n-octylaluminum, diisobutylaluminum hydride, diethylaluminum ethoxide, diethylaluminum chloride, or any combination thereof; and

the first organoaluminum compound and the second organoaluminum compound are different.