초록 ▼

A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I [ STR 1 ] in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alkyl or hydrogen

A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I [ STR 1 ] in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alkyl or hydrogen and R.sup.11 is a (substituted) alkylene or heteroatom bridge.

대표청구항 ▼

[ We claim:] [1.] A catalyst system which comprises a metallocene, as the transition metal compound, and a cocatalyst, wherein said metallocene is a compound of the formula I [ STR 13 ] in which M.sup.1 is a metal of group IVb, Vb or VIb of the periodic table,R.sup.1 and R.sup.2 are identical or dif

[ We claim:] [1.] A catalyst system which comprises a metallocene, as the transition metal compound, and a cocatalyst, wherein said metallocene is a compound of the formula I [ STR 13 ] in which M.sup.1 is a metal of group IVb, Vb or VIb of the periodic table,R.sup.1 and R.sup.2 are identical or different and are a hydrogen atom, a C.sub.1 -C.sub.10 -alkyl group, a C.sub.1 -C.sub.10 -alkoxy group, a C.sub.6 -C.sub.10 -aryl group, a C.sub.6 -C.sub.10 -aryloxy group, a C.sub.2 -C.sub.10 -alkenyl group, a C.sub.8 -C.sub.40 -arylalkenyl group, an OH group or a halogen atom,the radicals R.sup.3 are identical or different and are a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -alkyl group which is halogenated, a C.sub.6 -C.sub.10 -aryl group or an --NR.sub.2, --SR, --OSiR.sub.3, --SiR.sub.3 or --PR.sub.2 radical, in which R is a halogen atom, a C.sub.1 -C.sub.10 -alkyl group or a C.sub.6 -C.sub.10 -aryl group,R.sup.4 and R.sup.6 to R.sup.10 are identical or different and are a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -alkyl group, which optionally is halogenated, a C.sub.6 -C.sub.10 -aryl group, --NR.sub.2 , --SR, --OSiR.sub.3, --SiR.sub.3 or --PR.sub.2 radical, in which R is defined above, or adjacent radicals R.sup.4 to R.sup.10, with the atoms joining the, form an aromatic or aliphatic ring, andR.sup.5 is hydrogen,R.sup.11 is [ STR 14 ] in which R.sup.12 and R.sup.13 are identical or different and are a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.10 -alkyl group, a C.sub.1 -C.sub.10 -fluoroalkyl group, a C.sub.6 -C.sub.10 -aryl group, a C.sub.6 -C.sub.10 -fluoroaryl group, a C.sub.1 -C.sub.10 -alkoxy group, a C.sub.2 -C.sub.10 -alkenyl group, a C.sub.7 -C.sub.40- arylalkyl group, a C.sub.8 -C.sub.40 -arylalkenyl group or a C.sub.7 -C.sub.40 -alkylaryl group, or R.sup.12 and R.sup.13, in each case with the atoms joining them, form a ring, andM.sup.2 is silicon, germanium or tin. [5.] A catalyst system which comprises a metallocene and a cocatalyst, wherein the metallocene is dimethyl-silanediylbis (2-methyl-.alpha.-acenaphthindenyl)zirconium dichloride or a methylphenylsilanediylbis(2-methyl-.alpha.-acenaphthindenyl)zirconium dichloride.