US 11,859,024 B2
Dual catalyst system for producing polyethylene with long chain branching for blow molding applications
Jeremy M. Praetorius, Bartlesville, OK (US); Alfred E. Brown, Jr., Collinsville, OK (US); Yongwoo Inn, Bartlesville, OK (US); Youlu Yu, Bartlesville, OK (US); Qing Yang, Bartlesville, OK (US); and Ashish M. Sukhadia, 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 Jan. 10, 2022, as Appl. No. 17/571,665.
Application 17/571,665 is a continuation of application No. 16/898,502, filed on Jun. 11, 2020, granted, now 11,267,919.
Prior Publication US 2022/0127395 A1, Apr. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 210/16 (2006.01); B29C 49/00 (2006.01); C08F 4/6592 (2006.01); B29K 23/00 (2006.01); C08F 210/02 (2006.01)
CPC C08F 210/16 (2013.01) [B29C 49/0005 (2013.01); C08F 4/65927 (2013.01); B29K 2023/08 (2013.01); C08F 210/02 (2013.01); C08F 2500/09 (2013.01); C08F 2500/12 (2013.01); C08F 2500/17 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An ethylene polymer having:
a melt index of less than or equal to about 0.7 g/10 min;
a density in a range from about 0.942 to about 0.965 g/cm3;
a Mw in a range from about 110,000 to about 190,000 g/mol;
a relaxation time from about 0.75 to about 2.5 sec; and
an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms of the ethylene polymer in a molecular weight range of 300,000 to 900,000 g/mol that is at least 50% greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol.