Patent ID: 6852659
Filing Date: 2005-02-08
Classification: C07C,C08F

Abstract:
1. A method for preparing a catalyst composition comprising the steps of: (a) providing a supported alumoxane, a Group 15 containing transition metal catalyst compound, and an ionizing activator described by the formula;  wherein L′″ is an neutral Lewis base;  H is hydrogen;  (L′″-H)  A  d is an integer from 1 to 3 (b) preparing a catalyst composition by combining the supported alumoxane compound with the Group 15 containing transition metal catalyst compound in mineral oil to form a slurried catalyst system, followed by addition of the ionizing activator and stirring for 1 to 24 hours to form the catalyst composition; or (c) preparing a catalyst composition by combining the supported alumoxane compound with mineral oil to form a slurry, followed by combining with the ionizing activator and stirring from 1 to 24 hours, followed by combining the Group 15 containing transition metal catalyst compound and stirring for 1 to 24 hours to form the catalyst composition; characterized in that the mole ratio of the, metal of the ionizing activator to the transition metal of the Group 15 containing transition metal catalyst compound is from 0.1 to 0.9.