New complex catalysts for homopolymerization of ethylene and copolymerization of ethylene with another unsaturated monomer of the vinylic and acrylic type

摘要

Complex catalysts based on a metal of group VIII complexed with ligands are new. Complex catalysts for the homopolymerization of ethylene and for the copolymerization of ethylene with another unsaturated monomer has formula (A)-(C). M = Group VIII element; X = halogen; N, O or S; NH; Y = N, O or S; R', R'' = H or 1-10C optionally halogenated alkyl, cycloalkyl or aryl; R''', R'''' = H or aryl (optionally substituted with 1-10C alkyl);form a condensed benzene ring (optionally substituted with 1-10C alkyl); n = 1-2; or 1-3; R'-R'''' = H or 1-10C optionally halogenated alkyl, cycloalkyl or aryl; Independent claims are also included for: (i) preparation of the catalyst; and (ii) (co)polymerization of ethylene with another unsaturated monomer using the polymerization catalyst of the invention.