Catalyst Process For Spherical Particles

摘要

The present invention describes a process for preparing spherical particles of a catalyst composition, the process comprising contacting an organomagnesium precursor with a transition metal compound in presence of an internal donor to obtain a reaction mixture. Thereafter heating the reaction mixture from a first pre-determined temperature to a second pre-determined temperature and then heating the reaction mixture from second pre-determined temperature to a third pre-determined temperature to obtain spherical particles of the catalyst composition. The present invention also relates to a process for preparing of a spherical catalyst system from said spherical catalyst composition and preparing a spherical polyolefins having free flowing characteristics with bulk densities (BD) of at least about 0.4 g/cc from the spherical catalyst system.

主权项

1. A process for preparing spherical particles of a catalyst composition, the process comprising:
contacting an organomagnesium precursor with a transition metal compound in presence of an internal donor to obtain a reaction mixture; heating the reaction mixture from a first pre-determined temperature to a second pre-determined temperature and thereafter heating the reaction mixture from second pre-determined temperature to a third pre-determined temperature to obtain spherical particles of the catalyst composition, wherein heating the reaction mixture from the first pre-determined temperature to the second pre-determined temperature is instigated for a fixed period of time in the range of 5 to 200 minutes at a rate of 0.01 to 10.0° C./minute.