PROCESS FOR MAKING BRANCHED EPDM AND EPDM THEREFROM

摘要

Branched ethylene-propylene-diene elastomers (bEPDM) and processes for making the bEPDM' s comprising combining a catalyst precursor and an activator at a temperature within a range from 90°C to 160°C with ethylene, a C3 to C12 α-olefin, a non-conjugated diene, and a dual-polymerizable diene, where the catalyst precursor is a metallocene catalyst precursor, preferably according to one of various structures including any two ligands selected from cyclopentadienyl ligands and ligands isolobal to the cyclopentadienyl group.