	US 11,999,814 B2
	Modifications of sulfated bentonites and uses thereof in metallocene catalyst systems for olefin polymerization
Max P. McDaniel, Bartlesville, OK (US); Qing Yang, Bartlesville, OK (US); Ryan N. Rose, Caney, KS (US); Kathy S. Clear, Bartlesville, OK (US); Graham R. Lief, Bartlesville, OK (US); Eric D. Schwerdtfeger, Bartlesville, OK (US); Anand Ramanathan, Bartlesville, OK (US); Jeremy M. Praetorius, Bartlesville, OK (US); and Connor D. Boxell, 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 Dec. 13, 2022, as Appl. No. 18/065,003.
Claims priority of provisional application 63/290,088, filed on Dec. 16, 2021.
Prior Publication US 2023/0192909 A1, Jun. 22, 2023
Int. Cl. C08F 4/02 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01)

CPC C08F 4/025 (2013.01) [C08F 4/65916 (2013.01); C08F 4/65925 (2013.01); C08F 4/65927 (2013.01); C08F 210/02 (2013.01); C08F 2420/01 (2013.01); C08F 2420/03 (2013.01)]

24 Claims

1. A sulfated bentonite composition characterized by:

a total pore volume from 0.4 to 1 mL/g;

a total BET surface area from 200 to 400 m²/g;

an average pore diameter from 55 to 100 Angstroms (Ang); and

wherein the composition contains from 25 to 35 wt. % silicon.