US 12,275,809 B2
Dual metallocene polyethylene with improved processability for lightweight blow molded products
Jeremy M. Praetorius, Bartlesville, OK (US); Yongwoo Inn, Bartlesville, OK (US); Alfred E. Brown, Jr., Collinsville, OK (US); Brandy Rutledge-Ryal, Bartlesville, OK (US); Carlos A. Cruz, Kingwood, TX (US); and Jay M. Chaffin, 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. 16, 2023, as Appl. No. 18/487,175.
Application 18/487,175 is a continuation of application No. 18/062,091, filed on Dec. 6, 2022, granted, now 11,866,529.
Application 18/062,091 is a continuation of application No. 17/074,784, filed on Oct. 20, 2020, granted, now 11,578,156, issued on Feb. 14, 2023.
Prior Publication US 2024/0052073 A1, Feb. 15, 2024
Int. Cl. C08F 210/16 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01); C08L 23/0807 (2025.01)
CPC C08F 210/02 (2013.01) [C08F 210/16 (2013.01); C08L 23/0815 (2013.01); C08F 4/65925 (2013.01); C08F 4/65927 (2013.01); C08F 2420/01 (2013.01); C08F 2420/03 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An ethylene polymer having:
a density in a range from about 0.952 to about 0.968 g/cm3;
a relaxation time in a range from about 20 to about 1050 sec;
a tan δ at 0.1 sec−1 in a range from about 0.8 to about 1.15 degrees;
a viscosity at 100 sec−1 in a range from about 1000 to about 1900 Pa-sec; and
a slope of a plot of viscosity (Pa-sec) versus shear rate (sec−1) of the ethylene polymer at 100 sec−1 in a range from about 0.20 to about 0.31.