	US 11,866,529 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 Dec. 6, 2022, as Appl. No. 18/062,091.
Application 18/062,091 is a continuation of application No. 17/074,784, filed on Oct. 20, 2020, granted, now 11,578,156.
Prior Publication US 2023/0124846 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 23/08 (2006.01); C08F 210/16 (2006.01); C08F 4/653 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01)

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

1. An ethylene polymer having:

a density in a range from about 0.952 to about 0.968 g/cm³;

a HLMI in a range from about 10 to about 55 g/10 min, and a ratio of HLMI/MI in a range from about 185 to about 550;

a Mw in a range from about 200,000 to about 450,000 g/mol;

an IB parameter in a range from about 1.46 to about 1.80;

an IVc in a range from about 2.2 to about 3.2 dL/g;

a tan δ at 0.1 sec⁻¹in a range from about 1.05 to about 1.75 degrees; and

a slope of a plot of viscosity (Pa-sec) versus shear rate (sec⁻¹) of the ethylene polymer at 100 sec⁻¹in a range from about 0.18 to about 0.28; and

wherein the ethylene polymer comprises an ethylene homopolymer, an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, an ethylene/1-octene copolymer, or any combination thereof.