Patent ID: 6022935
Filing Date: 2000-02-08
Classification: C08F,C08J,D01F,Y10S

Abstract:
A process for the preparation of polymers of C.sub.2 -C.sub.12 -alk-1-enes by the polymerization of alk-1-enes which comprisefrom 50 to 100 mol % of propene,from 0 to 50 mol % of ethylene andfrom 0 to 20 mol % of C.sub.4 -C.sub.12 -alk-1-enes,at from -50 to 300.degree. C. and from 0.5 to 3000 bar in the presence of a catalyst system which containsA) an inorganic or organic carrier,B) a metallocene complex of the general formula IVc ##STR10## where M is titanium, zirconium, hafnium, vanadium, niobium or tantalum,X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical, --OR.sup.10 or --NR.sup.10 R.sup.11,R.sup.10 and R.sup.11 are each C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl, each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical,R.sup.5 to R.sup.7, R.sup.9, R.sup.13 to R.sup.15 and R.sup.17 are each hydrogen, C.sub.1 -C.sub.10 -alkyl, 5- to 7-membered cycloalkyl, which in turn may carry C.sub.1 -C.sub.10 -alkyl as substituent, C.sub.6 -C.sub.15 -aryl or arylalkyl, where two adjacent radicals together may furthermore form a saturated or unsaturated cyclic group of 4 to 15 carbon atoms or Si(R.sup.12).sub.3,R.sup.12 is C.sub.1 -C.sub.10 -alkyl, C.sub.3 -C.sub.10 -cycloalkyl or C.sub.6 -C.sub.15 -aryl,R.sup.19 is ##STR11## where R.sup.20, R.sup.21 and R.sup.22 are identical or different and are each hydrogen, halogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -fluoroalkyl, C.sub.6 -C.sub.10 -fluoroalkyl, C.sub.6 -C.sub.10 -aryl, C.sub.1 -C.sub.10 -alkoxy, C.sub.2 -C.sub.10 -alkenyl, C.sub.4 -C.sub.70 -arylalkyl, C.sub.8 -C.sub.40 -arylalkenyl or C.sub.7 -C.sub.40 -alkylaryl, or two adjacent radicals together with the atoms linking them form a ring,M.sup.2 is silicon, germanium or tin,C) a compound forming metallocenium ions andD) optionally a metal compound of the formula IM.sup.1 (R.sup.1).sub.r (R.sup.2).sub.s (R.sup.3).sub.t IwhereM.sup.1 is an alkali metal, an alkaline earth metal or a metal of main group III of the Periodic TableR.sup.1 is hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl or arylalkyl, each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical,R.sup.2 and R.sup.3 are each hydrogen, halogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl, alkylaryl, arylalkyl or alkoxy, each having 1 to 10 carbon atoms in the alkyl radical and 6 to 20 carbon atoms in the aryl radical,r is an integer from 1 to 3 ands and t are integers from 0 to 2, the sum r+s+t corresponding to the valency of M.sup.1,and wherein an antistatic agent is added during polymerization.