| 摘要 |
Novel bridged cyclopentadienyl compounds and corresponding metallocene catalysts are claimed. Bridged cyclopentadienyl compounds (I) are of formula (1). [Image] R 3>, R 4>, R 6>, R 50>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; R 5>isobutyl, isopropyl, isopentyl, isohexyl, cyclopentyl or cyclohexyl; R 20>, R 21>=6-18C aryl, optionally substituted, 5-18C heteroaryl, 7-20C arylalkyl, fluorinated 6-18C aryl or 7-20C arylalkyl and two R 20> or R 21> groups may form a mono- or polycyclic ring system, optionally substituted whereby R 20> and R 21> 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 R 20>; 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-Me 2Si[2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4'-phInd)ZrCl 2, rac-Me 2Si[2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4',5'-benzind)]ZrCl 2, rac-Me 2Si[2-i-Pr-4-(1-naphthyl)ind)[2'-Me-4',5'-benzind)]ZrCl 2, rac-Me 2Si[2-i-Pr-4-(1-naphthyl)ind)(2'-Me-4'',5'-benzind)]ZrCl 2, rac-Me 2Si[2-i-Pr-4-phenylind)(2'-ethyl-4'-phind)]Zrcl 2, rac-Me 2Si[2-i-Pr-4-(1-naphthyl)ind)(2'-ethyl-4'-PhInd)]Zrcl 2, rac-MeSi[2-i-Pr-4-Phind)(2'-Me-4'-PhInd)]ZrCl 2 and rac-MeSi[2-i-Pr-4-(1-naphthyl)ind)(2'-ethyl-4',5'-benzind)]ZrCl 2; (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). |
