A highly active Ni(II)-triadamantylphosphine catalyst for ultrahigh-molecular-weight polyethylene synthesis.

ABSTRACT: Here we report that the tri-1-adamantylphosphine-nickel complex [Ad₃PNiBr₃]^-[Ad₃PH]⁺ upon activation with an alkylaluminoxane catalyzes the polymerization of ethylene to ultrahigh-molecular-weight, nearly linear polyethylene (M_n up to 1.68 × 10⁶ g mol^-1) with initial activities reaching 3.7 million turnovers per h^-1 at 10 °C. Copolymerizations of ethylene with α-olefins such as 1-hexene and 1-octadecene, as well as tert-butyldimethyl(dec-9-en-1-yloxy)silane give the corresponding copolymers with no decrease in activity.

SUBMITTER: Kocen AL 

PROVIDER: S-EPMC6347634 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature