US 11,814,449 B2
Particle size control of supported chromium catalysts in loop slurry polymerization reactors
Max P. McDaniel, Bartlesville, OK (US); Carlton E. Ash, Owasso, OK (US); Kathy S. Clear, Bartlesville, OK (US); Eric D. Schwerdtfeger, Bartlesville, OK (US); Carlos A. Cruz, Kingwood, TX (US); Jeremy M. Praetorius, Bartlesville, OK (US); and Youlu Yu, 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 Oct. 13, 2022, as Appl. No. 18/046,212.
Application 18/046,212 is a continuation of application No. 17/716,027, filed on Apr. 8, 2022, granted, now 11,512,154.
Application 17/716,027 is a continuation of application No. 17/543,829, filed on Dec. 7, 2021, granted, now 11,325,997, issued on May 10, 2022.
Claims priority of provisional application 63/122,523, filed on Dec. 8, 2020.
Prior Publication US 2023/0121415 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 10/02 (2006.01); B01J 8/08 (2006.01); B01J 19/24 (2006.01); C08K 3/08 (2006.01); C08K 3/36 (2006.01)
CPC C08F 10/02 (2013.01) [B01J 8/08 (2013.01); B01J 19/2455 (2013.01); C08K 3/08 (2013.01); C08K 3/36 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An ethylene polymer having:
a high load melt index (HLMI) in a range from 4 to 70 g/10 min;
a density in a range from 0.93 to 0.96 g/cm3; and
a gel count of less than or equal to 30 catalyst particles of greater than 100 μm per 5 grams of the ethylene polymer; and
wherein the ethylene polymer contains from 150 to 680 ppm solid oxide and from 1.5 to 6.8 ppm chromium.