| abstract |
An ionic polymerization catalyst system component comprising a stable and bulky anion containing a plurality of boron atoms, such as those selected from the group consisting of polynuclear boranes, carboranes, and metallacarboranes useful for polymerizing olefins, diolefins, or acetylenically unsaturated monomers, either alone or in combination with each other or with other polymerizable monomers is disclosed. A method of using the anion to stabilize ionic catalyst systems during polymerization is also disclosed. |