| abstract |
catalyst system for the polymerization of olefins and process for the preparation of a polymer the invention relates to a catalyst system for the polymerization of olefins comprising a metal complex of formula cylmd and an activation co-catalyst, where m is titanium , cy is a cyclopentadienyl ligand, d is a diene, l is a guanidinate-containing ligand of formula (i) where each a is independently selected from nitrogen or phosphorus, r ^ 1 ^, r ^ 2 ^ and ^ 3 ^ are independently selected from the group consisting of hydrogen, hydrocarbyl, silyl, and germyl residues, whether or not substituted by one or more halogen, starch, phosphide, alkoxy, or aryloxy radicals, and cy is a ligand of the mono- or polysubstituted cyclopentadienyl type, in which the one or more cyt substituents are selected from the group consisting of halogen, hydrocarbyl, silyl, and germyl residues, optionally substituted by r one or more of the halogen, starch, phosphide, alkoxy, or aryloxy residues. the invention further relates to a process for the preparation of a polymer comprising at least one aliphatic or aromatic hydrocarbyl olefin, wherein the at least one aliphatic or aromatic olefin is contacted by the catalyst system of the present invention. . |