Patent ID: 6713575
Filing Date: 2004-03-30
Classification: C08F,Y10S

Abstract:
A method for polymerizing olefins comprising the steps of(a) contacting one or more polymerizable olefins under gas phase or slurry phase polymerizing conditions with an ionic catalyst resulting from mixing a metallocene and an aluminum alkyl in a solvent until all materials substantially dissolve; adding to said metallocene-aluminum alkyl solution an ionic compound comprising an anionic moiety that provides a non-coordinating to a transition metal cation provided by the metallocene; introducing support particles into the metallocene-aluminum alkyl-ionic compound solution; elevating the metallocene-aluminum alkyl-ionic compound solution in temperature to at least 40Â° C. and maintaining the elevated temperature for at least 0.5 hour; and removing the solvent to recover a solid free flowing powder, and (b) recovering polymer product.