摘要:
A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.5 is hydrogen or alkyl, R.sup.3 and R.sup.4 are alkyl, where R.sup.3, R.sup.4 and R.sup.5 may be halogenated, --(CR.sup.7 R.sup.8).sub.m --R.sup.6 --(CR.sup.7 R.sup.8).sub.n -- is a single- or multi-membered chain in which R.sup.6 may also be a (substituted) heteroatom, and m+n is zero or 1.
摘要翻译:用于烯烃聚合的高效催化剂体系包括助催化剂,优选铝氧烷和式I(1)的茂金属,其中优选M1是Zr或Hf,R1和R2是烷基或卤素,R5 - (CR 7 R 8)m -R 6 - (CR 7 R 8)n - 是单或多元链,其中R 6也可以是 (取代的)杂原子,m + n为0或1。
摘要:
The invention relates to a method for producing rac/meso metallocenes, the rac/meso metallocenes themselves, and their use in the production of polyolefins.
摘要:
Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligands A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I in which, preferably M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R5 is hydrogen or alkyl, R3 and R4 are alkyl, where R3, R4 and R5 may be halogenated, —(CR7R8)m—R6—(CR7R8)n— is a single- or multi-membered chain in which R6 may also be a (substituted) heteroatom, and m+n is zero or 1.
摘要翻译:使用含特异性取代的茚基配体的金属茂制备烯烃聚合物的方法用于烯烃聚合的高效催化剂体系包括助催化剂,优选铝氧烷和式Iin的金属茂,其优选M1是Zr或Hf,R1和 R 2是烷基或卤素,R 5是氢或烷基,R 3和R 4是烷基,其中R 3,R 4和R 5可以被卤化, - (CR 7 R 8)m -R 6 - (CR 7 R 8)n - 是单或多元链 其中R 6也可以是(取代的)杂原子,并且m + n为0或1。
摘要:
Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligandsA highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.5 is hydrogen or alkyl, R.sup.3 and R.sup.4 are alkyl, where R.sup.3, R.sup.4 and R.sup.5 may be halogenated, --(CR.sup.7 R.sup.8).sub.m --R.sup.6 --(CR.sup.7 R.sup.8).sub.n -- is a single- or multi-membered chain in which R.sup.6 may also be a (substituted) heteroatom, and m+n is zero or 1.
摘要:
Novel chemical compounds have an ionic structure and in combination with an organometallic transition metal compound form a catalyst system which is advantageously used for the polymerization of olefins.
摘要:
A stereorigid metallocene compound contains, as ligands, an aryl-substituted cyclopentadienyl radical, linked via a hydrogen bridge, and a substituted or unsubstituted fluorenyl radical. The novel metallocene compound is suitable as a catalyst component for olefin polymerization.
摘要:
A catalyst system comprising a) at least one support, b) at least one metallocene and c) at least one compound of the formula (I) where M1 is an element of group IIa, IIIa, IVa or Va of the Periodic Table of the Elements, x is 0 or 1, y is 0 or 1, z is 0 or 1, A is a cation of group Ia, IIa, IIIa of the Periodic Table of the Elements, a carbenium, oxonium, phosphonium or sulfonium cation or a quaternary ammonium compound, Q1, Q2, Q3 are each a ligand system based on a biphenyl framework bound to M1 via the positions 2 and 12 and having the formula (II) where R1, R2, R3, R4, R5, R6, R7 and R8 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C40 group, or an OSiR39 group, where R9 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C40 group and two or more radicals R1 to R8 may be joined to one another so as to form a monocyclic or polycyclic ring system which may be substituted.
摘要:
A process for preparing rac/meso-metallocenes, the rac/meso-metallocenes themselves and the use of the rac/meso-metallocenes for preparing isotactic polyolefins are described.