Patent ID: 11859024
Assignee: CHEVRON PHILLIPS CHEMICAL COMPANY LP
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 14:
15. An olefin polymerization process, the process comprising contacting a catalyst composition with ethylene and an α-olefin comonomer in a polymerization reactor system under polymerization conditions to produce an ethylene polymer, wherein:
the catalyst composition comprises:
catalyst component I comprising a single atom bridged or two atom bridged metallocene compound with two indenyl groups;
catalyst component II comprising a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group, and with an alkenyl substituent on the single atom bridge and/or on the cyclopentadienyl group;
an activator; and
optionally, a co-catalyst; and

the ethylene polymer is characterized by:
a melt index of less than or equal to about 1 g/10 min;
a density in a range from about 0.94 to about 0.965 g/cm3;
a Mw in a range from about 100,000 to about 250,000 g/mol;
a relaxation time from about 0.5 to about 3 sec; and
an average number of 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.