The invention provides a catalyst system and a method of making polyethylene
using the catalyst system, the method comprising combining ethylene; an activator;
and a metallocene catalyst compound; wherein in one embodiment the metallocene
catalyst compound is selected from:
##STR1##
wherein M is a Group 4 atom; X is a leaving group; n is an integer from 0
to 3; and R1 to R12 are independently selected from hydrides,
halogens, hydroxy, C1 to C6 alkoxys, C1 to C6
alkenyls, and C1 to C10 alkyls; characterized in that
when the comonomer is 1-hexene, and the mole ratio of 1-hexene to ethylene combined
is varied between 0.015 to 0.05, the density of the resultant polyethylene changes
by less than 5% and the I21/I2 varies from 10 to 150.
