A very low density polyethylene having a density of 0.890 to 0.915 and a Dart
Drop
value of at least about 450 g/mil or above is disclosed. Gas phase polymerization
methods are also disclosed for making very low density linear polyolefins utilizing
a metallocene catalyst, and the resulting polyolefin products. In a specific embodiment,
a gas phase polymerization process is disclosed relating to the formation of a
linear polyethylene having a very low density, e.g., ranging from 0.890 to 0.915,
but with improved toughness.