Patent ID: 6028150
Filing Date: 2000-02-22
Classification: C07F,C08F,Y10S

Abstract:
A process for preparing an olefin polymer, comprising the step of polymerizing at least one olefin with another monomer under polymerizing conditions in the presence of a catalytically effective amount of a fullerene-derived metallocene catalyst composition,wherein the fullerene-derived metallocene catalyst composition comprises a fullerene-derived metallocene represented by the formula selected from the group consisting of ##STR1## wherein F is a fullerene core, R is independently selected from the group consisting of H, O, C.sub.1-20 linear and branched alkyl, C.sub.6-40 aryl, C.sub.7-40 alkylaryl, and C.sub.7-40 arylalkyl,M is a transition metal,X is independently a halogen, hydride, alkyl, or aryl,A is independently unsubstituted and substituted cyclopentadienyl, unsubstituted and substituted indenyl, unsubstituted and substituted fluorenyl, a fused ring containing cyclopentadienyl, indenyl, or fluorenyl moiety,R.sup.2 is a C.sub.1-6 linear, branched or cyclic alkylene group, an alkyl substituted silanylene group or an alkyl substituted silaalkylene group which is bridged between the two A groups,t is a positive integer, and the sum of 3+t is equal to the oxidation state of M,m is an integer from 1 to 10,p and q are positive integers, and the sum of 1+p+q is equal to the oxidation state of M, andn is an integer from 1 to 10.