US 11,945,938 B2
Bimodal polyethylene copolymers
Graham R. Lief, Bartlesville, OK (US); Qing Yang, 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 Apr. 20, 2023, as Appl. No. 18/303,656.
Application 18/303,656 is a continuation of application No. 17/160,481, filed on Jan. 28, 2021, granted, now 11,667,777.
Application 17/160,481 is a continuation in part of application No. 16/593,566, filed on Oct. 4, 2019, granted, now 11,186,665, issued on Nov. 30, 2021.
Prior Publication US 2023/0272197 A1, Aug. 31, 2023
Int. Cl. C08L 23/08 (2006.01); C08F 2/34 (2006.01); C08F 4/653 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 210/16 (2006.01)
CPC C08L 23/0815 (2013.01) [C08F 2/34 (2013.01); C08F 4/65904 (2013.01); C08F 4/65912 (2013.01); C08F 4/65925 (2013.01); C08F 4/65927 (2013.01); C08F 210/16 (2013.01); C08F 2420/00 (2013.01); C08L 2207/062 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ethylene polymer having:
a density in a range from 0.925 to 0.95 g/cm3;
a HLMI of less than or equal to 35 g/10 min; and
a ratio of a number of short chain branches (SCBs) per 1000 total carbon atoms at Mz to a number of SCBs per 1000 total carbon atoms at Mn in a range from 12 to 21.