Ultra-high molecular weight elastomeric polyethylene using an electronically and sterically enhanced nickel catalyst

Abstract

Highly active <italic>para-t</italic>-Bu-containing 1,2-bis(imino)acenaphthene-Ni(<sc>ii</sc>) catalysts are disclosed which afford hyper-branched PEs with <italic>M</italic>_w's up to 3.1 × 10⁶ g mol⁻¹; high tensile strength, excellent shape fixity as well as high elongation at break are a feature.