| 摘要 |
A method for the preparation of solid catalytic composition used for (co)polymerisation of olefins, comprises: (a) formation of solid (S1) by reacting a support in particle form and a halogen derivative represented by formula: R<1>M<1>X<1>3; (in which R<1> = hydrocarbon radical; M<1> = silicon, germanium or tin; and X<1> = halogen;) (b) reaction between (S1) and compound (C), which can graft at least one group with a cyclo-alkadienyl skeleton (L) to M<1>, at least one C atom from cyclo-alkadienyl radical being bonded to at least one H atom; the reaction giving a solid (S2); (c) reaction between (S2) and deprotonating compound (D) with formula: R<2>M<2>X<2>n; (in which R<2> = H or hydrocarbon radical; M<2> = sodium, potassium, lithium or magnesium; X<2> = halogen; and n = 0 if M<2> = lithium, sodium or potassium or n=1 if M<2> = magnesium;) the reaction giving solid (S3); and (d) reaction between (S3) and transition metal derivative with formula: R<3)<y-z)M<3>Xz; (in which R<3> = hydrocarbon; M<3> = transition metal; X = halogen; y = 3 or 4; and z = 1 - y). Also claimed are: (i) catalytic solids obtained by above method; and (ii) method for polymerisation of at least one olefin in gaseous phase. |
