Patent ID: 7148173
Filing Date: 2006-12-12
Classification: C08F,Y10S

Abstract:
1. A heterogeneous catalytic composition obtained by reacting a nonfunctionalized porous inorganic support with an alumoxane and subsequently supporting at least one metallocene compound thereon, wherein the metallocene compound is defined by formula I, II, or III: wherein: the L groups are equal to or different from each other, wherein each L is selected from the group consisting of cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, octahydrofluorenyl, and benzoindenyl; each R is independently hydrogen, linear or branched C the R each R each Q is independently B, C, Si, Ge, or Sn; M is a lanthanide, an actinide, or a metal of group 3, 4, or 10 of the Periodic Table of the Elements, and M has a valence; each X is independently hydrogen, chlorine, bromine, ORII, NRII2, C L′ is N or O; when L is cyclopentadienyl, k is equal to 5; when L is indenyl, k is equal to 7; when L is fluorenyl or benzoindenyl, k is equal to 9; when L is tetrahydroindenyl, k is equal to 11; and when L is octahydrofluorenyl, k is equal to 17; z is equal to 0, 1, or 2; x is equal to 1, 2, or 3; y is equal to 1, 2, or 3; x+y+z is equal to the valence of M; m is equal to 1, 2, 3 or 4; a is an integer whose value ranges from 0 to k−1; b is an integer whose value ranges from 0 to k−1; f is an integer whose value ranges from 1 to k; g is equal to 0 or 1; c is equal to 0 or 1; e is equal to 0 or 1; a+b+c is at least 1; a+g+c is at least 1; d is equal to 0, 1, or 2; when Q is B, then c+d=1; when Q is C, Si, Ge, or Sn, then c+d=2; when L′ is N, then g+e=1; and when L′ is 0, then g=0 and e=0.