Loading patent…
AssigneeBASF SE
InventorsKaspar Evertz, Ruerger Schlund, Guenther Schweier, Hans Brintzinger, Werner Roell, Peter Jutzi, Ingrid Mieling, Winfried Mengele
Estimating the term…
Catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alk-1-enes contain, as active components, a) a metallocene complex of the general formula I ##STR1## where M is a metal of the subgroup III, IV or v of the Periodic Table of elements or a metal selected from the group consisting of the lanthanides, X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or --OR.sup.7, R.sup.7 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl, in each case having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical, n is the valency of M minus two, R.sup.1 to R.sup.6 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, 5-membered to 7-membered cycloalkyl which in turn may carry C.sub.1 -C.sub.10 -alkyl as a substituent, C.sub.6 -C.sub.15 -aryl or arylalkyl, where two adjacent radicals together may furthermore form a cyclic group of 4 to 15 carbon atoms, or Si(R.sup.8).sub.3, R.sup.8 is C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or C.sub.3 -C.sub.10 -cycloalkyl, E.sup.1 and E.sup.2 are independent of one another and are each Si(R.sup.9).sub.2, Ge(R.sup.9).sub.2, Sn(R.sup.9).sub.2 or C(R.sup.9).sub.2 --C(R.sup.9).sub.2 and R.sup.9 is C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.10 -cycloalkyl or C.sub.6 -C.sub.15 -aryl, and b) an open-chain or cyclic alumoxane compound of the general formula II or III ##STR2## where R.sup.10 is C.sub.1 -C.sub.4 -alkyl and m is an integer of from 5 to 30.
A catalyst system for the polymerization of C.sub.2 -C.sub.10 -alk-1-enes, containing, as active components,
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
No related US applications are recorded in the indexed filing history.
Metallocenes
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double
Component covered by group C08F4/60 containing a transition metal-carbon bond: in combination with an organoaluminium compound
Containing at least two cyclopentadienyl rings, fused or not: two cyclopentadienyl rings being mutually bridged
Term ended 13 Jun 2014 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alk-1-enes, containing, as active components,
a) a metallocene complex of the general formula I ##STR3## where
M is a metal of the subgroup III, IV or V of the Periodic Table of elements or a metal selected from the group consisting of the lanthanides,
Preparation of a zirconium complex of the formula Ia ##STR9##
0.2 mol of ##STR10## were reacted with 0.2 mol of n-butyllithium in 1,000 ml of pentane at -100.degree. C. to give a compound of the formula IVa ##STR11## 780 mg (=3.20 mmol) of the compound IVa were dissolved in 40 ml of toluene, and 4 ml of a 1.6 molar solution of n-butyllithium in hexane (=6.40 mmol) were added. 3.20 mmol of the resulting compound having bismetallized ligands were added dropwise at room temperature to a suspension of 1.82 g (=7.81 mmol) of ZrCl.sub.4 in 100 ml of toluene, a yellow color being observed.
Heating was then carried out for 1 hour at 80.degree. C., the color changing to light brown. After 6 hours, the mixture was allowed to cool to room temperature, undissolved material was filtered off and the solid residue was washed with toluene (2.times.20 ml ) and the solvent removed completely under greatly reduced pressure. The residue was extracted with 200 ml of hexane and the yellow suspension formed was evaporated to half its volume and cooled to -30.degree. C. A colorless powder was isolated.