Catalyst system of enhanced productivity and its use in polymerization process

A process of polymerizing 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 having 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, wherein said Group 13 atom is present in a molar ratio to said (ii) anion of 1:1 to 200:1;
• 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 C1-C20 chain hydrocarbyl radical selected from the group consisting of all radicals, C4-C20 cyclic hydrocarbyl radicals, C3-C20 alkyl-substituted cyclohydrocarbyl radicals substituted or unsubstituted C6-C20 aromatic radicals and alkyl-substituted aromatic radicals, further wherein one of R, R′ and R″ may additionally be a C1-C20 alkoxy radical and wherein at least one of R, R′ and R″ is a C4-C20 substituent.