Patent ID: 6194343
Filing Date: 2001-02-27
Classification: B01J,C08F,Y10S

Abstract:
A supported tethered silyl bridged metallocene compound selected from the group consisting of compounds of the formula: )support-(O).sub.a Si(R.sup.3).sub.b [(O).sub.c --(R.sup.2).sub.d --(CH.sub.2 CH.sub.2).sub.e (CH.dbd.CH).sub.f --Si(R.sup.1)(CP).sub.2 M(L).sub.g ].sub.hwherein the support is a support having reactive surface OH groups before reaction with the tether, M is selected from the group consisting of Ti, Hf and Zr, R.sup.1 is selected from the group consisting of a C.sub.1-4 alkyl radical and a phenyl radical which is unsubstituted or up to fully substituted by one or more C.sub.1-4 alkyl radicals, R.sup.2 is selected from the group consisting of a C.sub.1-20 alkylene radical and a phenylene radical, R.sup.3 is selected from the group consisting of a halogen atom, a C.sub.1-4 alkyl radical, a C.sub.1-4 alkoxy radical, a phenyl radical and an amino radical of the formula N(R.sup.4).sub.2 wherein R.sup.4 is a C.sub.1-4 alkyl radical, a is an integer from 1 to 3, b is 0, 1, 2 or 3, and h is an integer from 1 to 3 and a+b+h=4 and if h is 1, then a+b=3 and a is 1 to 3, and if h is 2, a+b=2 and a is 1 or 2 and if h is 3, a=1 and b=0, c is 0 or 1 and d is 0 or 1 and if c =1, then d=1, e is 0 or 1, f is 0 or 1 and the sum of e+f=1, Cp is selected from the group consisting of cyclopentadienyl, indenyl and fluorenyl ligands which are unsubstituted or are up to fully substituted by one or more substituents selected from the group consisting of a C.sub.1-4 alkyl radical, a phenyl radical or an amino radical which is substituted by two C.sub.1-4 alkyl radicals, said Cp radicals being joined by a bridge containing the Si atom bearing the radical R.sup.1 each L is independently selected from the group consisting of a halogen atom, a C.sub.1-4 alkyl group and a C.sub.1-4 alkoxy group and the sum of 2+g is equal to the oxidation state of M; and compounds of the formula:(support)-(R.sup.2).sub.i --(CH.sub.2 CH.sub.2).sub.e (CH.dbd.CH).sub.f --Si(R.sup.1)(Cp).sub.2 M(L).sub.gwherein the support is a polymer without surface hydroxyl groups and containing residual unsaturation and R.sup.1, R.sup.2, Cp, M, L, e, f and g are as defined above, e+f=1, and i is 0 or 1.