CATALYST SYSTEM FOR POLYMERIZATION OF OLEFINS, PREPARATION THEREOF, AND PROPYLENE POLYMERIZATION PROCESS Russian patent published in 2000 - IPC

FIELD: polymerization catalysts. SUBSTANCE: invention provides catalyst system containing metallocene catalytic component, Aluminoxan, and porous carrier, which is prepared as follows. Metallocene catalytic component is mixed with Aluminoxan in solvent to form solution wherein metallocene catalytic component is defined by formula I: (I), in which M is IV, V, or VI group metals; R¹ and R², identical or different, are hydrogen atoms, C₁-C₁₀-alkyl, C₁-C₁₀-alkoxy, C₆-C₁₀-aryl, C₆-C₁₀-aryloxy, C₂-C₁₀-alkenyl, C₇-C₄₀-arylalkyl, or C₈-C₄₀-arylalkenyl group, or halogen atoms; R³ and R⁴ are hydrogen atoms; R⁵ and R⁶, identical (preferably) or different, are halogen atoms, optionally halogenated C₁-C₁₀-alkyl, optionally halogenated C₆-C₁₀-aryl, C₂-C₁₀- alkenyl, C₇-C₄₀-arylalkyl, C₇-C₄₀-alkylaryl, C₇-C₄₀-arylalkenyl group, or radicals C₈-C₄₀ with -NR152

, -SR¹⁵, -OR¹⁵, -OSiR153 or -PR152 being halogen atom, R¹⁵-alkyl or C₁-C₁₀-aryl group; C₆-C₁₀ is radical A: R⁷, wherein and R¹¹, R¹², identical or different, are hydrogen atoms, halogen atoms, R¹³-alkyl, C₁-C₂₀-fluoroalkyl, C₁-C₂₀-aryl, C₆-C₃₀- fluoroaryl, C₆-C₃₀-alkoxy, C₁-C₂₀-alkenyl, C₂-C₂₀-alkenyl C₇-C₄₀-arylalkyl, C₈-C₄₀-arylalkenyl, or C₇-C₄₀-alkylaryl group, or R{11} and R{12} or R{11} and R{13} together with atoms linked to them can form cyclic systems; M{2} is silicon, germanium, or tin atom; R{8} and R{ 9} , identical or different, are as indicated for R{11}; m and n, identical or different, are 0, 1 or 2, provided that m+n=0, 1 or 2; and R{ 10} , identical or different, are as indicated for R{11}, R{12} and R{13} on condition that two adjacent R{ 10} radicals can be interlinked to form cycling system. Resulting solution is mixed then with porous carrier such that ratio of total solution volume to total volume of porous carrier is at least 3. Propylene polymerization process is also described. EFFECT: simplified process due to reduced clogging of reactor and formation of depositions therein. 9 cl, 3 tbl, 26 ex