Patent ID: 6323148
Filing Date: 2001-11-27
Classification: B01J,C08F

Abstract:
An ethylene polymerization catalyst obtained by:(a) contacting an inorganic or an organic support material with an agent selected from the group consisting of a compound having the structural formula NR.sup.6.sub.3, where R.sup.6 is C.sub.1 -C.sub.6 alkyl; and a compound having the structural formula Ti(OR.sup.8).sub.4, where R.sup.8 is C.sub.1 -C.sub.6 alkyl or phenyl;(b) contacting the product of step (a) with a dialkylmagnesium compound or complex;(c) contacting the product of step (b) with an alcohol compound or a silane compound having the structural formula (R.sup.2 O).sub.n Si(R.sup.3).sub.4-n, wherein R.sup.2 and R.sup.3 are the same or different and are C.sub.1 -C.sub.20 alkyl, cycloalkyl, aryl, alkaryl or aralkyl; and n is an integer of 1 to 4; and(d) contacting the product of (c) with a transition metal compound.