Patent ID: 7148173

Claim:
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 1 –C 20 alkyl, linear or branched C 3 –C 20 cycloalkyl, linear or branched C 6 –C 20 aryl, linear or branched C 3 –C 20 alkenyl, linear or branched C 7 –C 20 arylalkyl, linear or branched C 7 –C 20 alkylaryl, linear or branched C 8 –C 20 arylalkenyl, or a group SiR II 3, wherein the C 1 –C 20 alkyl, the C 3 –C 20 cycloalkyl, the C 6 –C 20 aryl, the C 3 –C 20 alkenyl, the C 6 –C 20 arylalkyl, the C 7 –C 20 alkylaryl, and the C 8 –C 20 arylalkenyl are optionally substituted with 1 to 10 halogen atoms; the R I groups are equal to or different from each other, wherein each R I is a divalent aliphatic or aromatic hydrocarbon group containing from 1 to 20 carbon atoms, optionally containing from 1 to 5 heteroatoms of groups 14 to 16 of the Periodic Table of the Elements, and optionally containing boron; wherein the —OSiRII3 group in the formula I is directly bonded to a carbon atom in the R I ; each R II is independently linear or branched C 1 –C 20 alkyl, linear or branched C 3 –C 20 cycloalkyl, linear or branched C 6 –C 20 aryl, linear or branched C 3 –C 20 alkenyl, linear or branched C 7 –C 20 arylalkyl, linear or branched C 8 –C 20 arylalkenyl, or linear or branched C 7 –C 20 alkylaryl; 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 1 –C 20 alkyl, or C 6 –C 20 aryl; 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.