Patent ID: 6114479
Filing Date: 2000-09-05
Classification: C08F,Y10S

Abstract:
A process for polymerizing propylene alone or in combination with one or more other olefins, said process comprising polymerizing in the presence of a supported catalyst system prepared by combining an alumoxane, a surface modifier, a porous carrier, and a metallocene catalyst component in a solvent to form a solution wherein the surface modifier is represented by the formula: ##STR8## wherein R.sup.3 is hydrogen or a branched or linear alkyl group having 1 to 50 carbon atoms; and R.sup.1 is hydrogen or a branched or linear alkyl group having 1 to 50 carbon atoms which may contain a heteroatom selected from O, N, P or S; and R.sup.2 is (CH.sub.2).sub.x OH wherein x is an integer from 1 to 50 and wherein the metallocene catalyst component is represented by the following formula: ##STR9## wherein M.sup.1 is a metal of group 4, 5, or 6 of the Periodic Table, R.sup.1 and R.sup.2 are identical or different, are one of 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.7 -C.sub.40 arylalkyl group, a C.sub.7 -C.sub.40 alkylaryl group, a C.sub.8 -C.sub.40 arylalkenyl group, or a halogen atom;R.sup.3 and R.sup.4 are hydrogen atoms;R.sup.5 and R.sup.6 are identical or different, preferably identical, are one of a halogen atom, a C.sub.1 -C.sub.10 alkyl group, which may be halogenated, a C.sub.6 -C.sub.10 aryl group, which may be halogenated, a C.sub.2 -C.sub.10 alkenyl group, a C.sub.7 -C.sub.40 arylalkyl group, a C.sub.7 -C.sub.40 alkylaryl group, a C.sub.8 -C.sub.40 arylalkenyl group, a --NR.sub.2.sup.15, --SR.sup.15, --OR.sup.15, --OSiR.sub.3.sup.15 or --PR.sub.2.sup.15 radical, wherein R.sup.15 is one of a halogen atom, a C.sub.1 -C.sub.10 alkyl group, or a C.sub.6 -c.sub.10 aryl group; ##STR10## .dbd.BR.sup.11, .dbd.AlR.sup.11, --Ge--, --Sn--, --O--, --S--, .dbd.SO, .dbd.SO.sub.2, .dbd.NR.sup.11, .dbd.CO, PR.sup.11, or .dbd.P(O)R.sup.11 ; wherein:R.sup.11, 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.20 alkyl group, a C.sub.2 -C.sub.20 fluoroalkyl group, a C.sub.6 -C.sub.30 aryl group, a C.sub.6 -C.sub.30 fluoroaryl group, a C.sub.1 -C.sub.20 alkoxy group, a C.sub.2 -C.sub.20 alkenyl group, a C.sub.7 -C.sub.40 arylalkyl group, a C.sub.8 -c.sub.40 arylalkenyl group, C.sub.7 -C.sub.40 alkylaryl group, or R.sup.11 and R.sup.12, or R.sup.11 and R.sup.13, together with the atoms binding them, can form ring systems;M.sup.2 is silicon, germanium or tin;R.sup.8 and R.sup.9 are identical or different and have the meanings as stated for R.sup.11 ;m and n are identical or different and are zero, 1 or 2, m plus n being zero, 1 or 2; andthe radicals R.sup.10 are identical or different and have the meanings stated for R.sup.11, R.sup.12 and R.sup.13 wherein further two adjacent R.sup.10 radicals can be joined together to form a ring system.