Transition metal compound, ligand system, catalyst system and the use of the latter for the polymerisation and copolymerisation of olefins

摘要

Novel bridged cyclopentadienyl compounds and corresponding metallocene catalysts are claimed. - Bridged cyclopentadienyl compounds (I) are of formula (1). - R3, R4, R6, R50 = H, 1-20C hydrocarbon, preferably 1-18C alkyl, 2-20C alkenyl, 3-15C alkylalkenyl, 6-18C aryl, 5-18C heteroaryl, 7-20C arylalkyl, 7-20C alkylaryl, optionally fluorinated; - R5 = isobutyl, isopropyl, isopentyl, isohexyl, cyclopentyl or cyclohexyl; R20, R21=6-18C aryl, optionally substituted, 5-18C heteroaryl, 7-20C arylalkyl, fluorinated 6-18C aryl or 7-20C arylalkyl and two R20 or R21 groups may form a mono- or polycyclic ring system, optionally substituted whereby R20 and R21 are not simultaneously naphthyl, phenyl, phenanthrenyl or anthracenyl as well as mixtures of naphthyl and phenyl; - Q = 4-24C aryl, a heteroaryl that with the cyclopentadienyl ring forms azapentalene, thiopentalene or phosphapentalene, optionally substituted by R20; Z=0-3; - l = 0-4, preferably 1; - B = a bridging structural element; - M = Ti, Zr or Hf, preferably Zr; - x = halogen, preferably chlorine, alkyl, preferably methyl or phenolate, optionally substituted. - Independent claims are included for: - (i) metallocene compounds (II) of formula (2), excluding rac-Me2Si(2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4'-phInd)ZrCl2, rac-Me2Si(2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4',5'-benzind))ZrCl2, rac-Me2Si(2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4',5'-benzind))ZrCl2, rac-Me2Si(2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4'',5'-benzind))ZrCl2, rac-Me2Si(2-i-Pr-4-phenylind)(2'-ethyl-4'-phind))Zrcl2, rac-Me2Si(2-i-Pr-4-(1-naphthyl)ind)(2'-ethyl-4'-PhInd))Zrcl2, rac-MeSi(2-i-Pr-4-Phind)(2'-Me-4'-PhInd))ZrCl2 and rac-MeSi(2-i-Pr-4-(1-naphthyl)ind)(2'-ethyl-4',5'-benzind))ZrCl2; - (ii) a catalyst system (III) comprising a metallocene compound (II), at least one cocatalyst and/or at least one support; - (iii) a process for the production of a polyolefin by polymerization of an olefin in the presence of the metallocene compounds (II); - (iv) propylene homo- or copolymers prepared using the metallocene compound (II).