| 摘要 |
Heterogeneous catalytic component obtainable by reacting a porous inorganic support with a metallocene compound characterized in that the metallocene compound is defined by the following general formulas: wherein: L, equal to or different from each other, is selected from the group comprising: cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, octahydrofluorenyl or benzoindenyl; each R is independently selected from hydrogen, C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C3-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-20 arylalkenyl, linear or branched, optionally substituted by 1 to 10 halogen atoms, or a group SiR<II>3; each R<I >equal to or different from each other 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 boron; each Q is independently selected from B, C, Si, Ge, Sn; M is a metal of group 3, 4 or 10 of the Periodic Table, Lanthanide or Actinide; each X is independently selected from: hydrogen, chlorine, bromine, OR<II>, NR<II>2, C1-C20 alkyl or C6-C20 aryl; each R<II >is independently selected from C1-C20 alkyl , C3-C20 cycloalkyl, C6-C20 aryl, C3-C20 alkenyl C7-C20 arylalkyl, C7-C20 arylalkenyl or alkylaryl, linear or branched; R<II >is methyl, ethyl isopropyl; 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 an integer which can assume the values 1, 2, 3 or 4; a and b are integers whose value ranges from 0 to k-1; f is an integer whose value ranges from 1 to k; g is 0 or 1; c and e are 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; when L' is O, then g=0 and e=0.
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