Patent ID: 6294625
Filing Date: 2001-09-25
Classification: C08F,Y10S

Abstract:
A process of polymer monomers, comprising(a) contacting one or more members of the group consisting of olefins, cyclic olefins, and acetylenically unsaturated monomers with a combination comprising:(i) a Group 4 transition metal cation hating bonded thereto(1) a single cyclopentadienyl moiety or polycyclic derivative thereof,(2) a N, O, S or P heteroatom moiety, said cyclopentadienyl moiety or polycyclic derivative thereof and said heteroatom moiety being both bonded to the Group 4 transition metal atom and either bonded directly to each other or bonded to each other via a bridging group, and(3) at least one ligand selected from the group consisting of hydride, hydrocarbyl, substituted hydrocarbyl, and hydrocarbyl substituted organometalloid radicals;(ii) a compatible non-coordinating anion; and(iii) a hydrolyzable Lewis acid compound containing a Group 13 atom; and(b) maintaining contacting step (a) for a sufficient time, and under conditions sufficient to polymerize said members;provided that if said Group 13 atom is aluminum and there is no tertiary carbon substituent on at least one of said heteroatom moiety, said Group 4 transition metal cation and said bridging group, said hydrolyzable Lewis acid compound is a compound of the general formula AIRR' R"" wherein each R, R' and R"" is a straight or branched C.sub.1 -C.sub.20 chain hydrocarbyl radical selected from the group consisting of alkyl radicals, C.sub.4 -C.sub.20 cyclic hydrocarbyl radicals, C.sub.3 -C.sub.20 alkyl-substituted cyclohydrocarbyl radicals, substituted or unsubstituted C.sub.6 -C.sub.20 aromatic radicals and alkyl-substituted aromatic radicals, further wherein one of R, R' and R"" may additionally be a C.sub.1 -C.sub.20 alkoxy radical and wherein at least one of R, R' and R"" is a C.sub.4 -C.sub.20 substituent.