Finely tuned nickel complexes as highly active catalysts affording branched polyethylene of high molecular weight: 1-(2,6-Dibenzhydryl-4- methoxyphenylimino)-2-(arylimino)acenaphthylenenickel halides

A new family of 1-(2,6-dibenzhydryl-4-methoxyphenylimino)-2-(arylimino) acenaphthylenenickel halides utilized as highly active and thermostable catalysts of ethylene polymerization produce ultra-high-molecular-weight polymer of remarkable physical properties.187