Blends of two or more polyethylenes are made by reacting ethylene with an
oligomerization catalyst that forms -olefins, and two polymerization catalysts,
one of which under the process conditions copolymerizes ethylene and -olefins,
and the other of which under process conditions does not readily copolymerize ethylene
and -olefins. The blends may have improved physical properties and/or processing characteristics.
