Catalyst system and its use in a polymerization process

A catalyst system for the polymerization of olefin(s) comprising an activator composition represented by Formulae:

• [L—H]+2 {[(C6F5)3BC6F4OSi(R)2OSi(R)2]2O}2−
• or
• [L—H]hu +[(C6F5)3BC6F4O[Si(R)2O]xR]−
• or
• [L—H]+[(C6F5)3MO[Si(R)2O]xR]−
• wherein L is a neutral Lewis base;
• [L—H]+ is a Bronsted acid or Lewis acid;
• x is a positive integer;
• M is an element selected from Group 13 of the Periodic Table of the Elements;
• and
• each R is independently selected from the group consisting of a hydrogen, an hydroxyl group, an alkyl, and combinations thereof.

A process for polymerizing olefin(s) in the presence of a catalyst system comprising an activator composition having a siloxane moiety represented by the formulae:

• [L—H]+[MQn]−O(SiR2O)x[MQn]−[L—H]+
• or
• [L—H]+[MQn]−O(SiR2O)xR
• wherein L is a neutral Lewis base;
• [L—H]+ is a Bronsted acid or Lewis acid;
• n is 3 or 4;
• x is a positive integer;
• [MQn]− is a non-coordinating anion wherein Q is independently selected from the group consisting of a hydride, a dialkylamido, a halide, an alkoxide, an aryloxide, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, a substituted halocarbyl, a halosubstituted-hydrocarbyl radical and combinations thereof;
• M is an element selected from Group 13 of the Periodic Table of the Elements;
• and
• each R is independently selected from the group consisting of hydrogen, a hydroxyl group, an alkyl, and combinations thereof.

A process for polymerizing olefin(s) in the presence of a catalyst system comprising an activator composition having a siloxane moiety represented by the formulae:

• [L—H]+{[(C6F5)3BC6F4OSi(R)2OSi(R)2]2O}[L—H]+
• or
• [L—H]+[(C6F5)3BC6F4O[Si(R)2O]xR]−
• or
• [L—H]+[(C6F5)3MO[Si(R)2O]xR]−
• wherein L is a neutral Lewis base;
• [L—H]+ is a Bronsted acid or Lewis acid;
• x is a positive integer;
• M is an element selected from Group 13 of the Periodic Table of the Elements;
• and
• each R is independently selected from the group consisting of hydrogen, a hydroxyl group, an alkyl, and combinations thereof.