US 12,234,348 B2
Blow molding polymers with improved cycle time, processability, and surface quality
Carlos A. Cruz, Kingwood, TX (US); Yongwoo Inn, Bartlesville, OK (US); Justin Lumbley, Bartlesville, OK (US); Brandy Rutledge-Ryal, Bartlesville, OK (US); John R. Rathman, Bartlesville, OK (US); Jennifer L Hicks, Bartlesville, OK (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 May 17, 2022, as Appl. No. 17/745,962.
Application 17/745,962 is a continuation of application No. 16/522,788, filed on Jul. 26, 2019, granted, now 11,377,541.
Prior Publication US 2022/0275183 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 210/16 (2006.01); C08F 4/6592 (2006.01); C08K 3/08 (2006.01); C08L 23/0807 (2025.01)
CPC C08L 23/0815 (2013.01) [C08F 4/6592 (2013.01); C08F 210/16 (2013.01); C08K 3/08 (2013.01); C08F 2500/07 (2013.01); C08F 2500/17 (2013.01); C08K 2003/0881 (2013.01); C08L 2207/062 (2013.01); C08L 2207/07 (2013.01)] 20 Claims
 
1. An ethylene polymer having:
a density in a range from about 0.952 to about 0.965 g/cm3;
a high load melt index (HLMI) in a range from about 5 to about 25 g/10 min;
a weight-average molecular weight (Mw) in a range from about 275,000 to about 450,000 g/mol;
a number-average molecular weight (Mn) in a range from about 15,000 to about 40,000 g/mol;
a viscosity at HLMI (η @ HLMI) in a range from about 1400 to about 4000 Pa-sec; and
a tan δ at 0.1 sec−1 in a range from about 0.65 to about 0.98 degrees.