Patent ID: 6143686
Filing Date: 2000-11-07
Classification: C08F

Abstract:
A catalyst composition comprising a metalloid or metal oxide support having covalently bound to the surface thereof directly through an oxygen atom of the metalloid or metal oxide a boron containing activator anion that is also ionically bound to a catalytically active transition metal compound, wherein the transition metal compound is present in the range of from about 0.01 to about 0.3 mmol/g catalyst, wherein the activator anion is present in the range of from about 0.01 to about 0.3 mmol/g catalyst, and wherein the transition metal compound is obtained via protonation of a compound represented by the formula: ##STR8## wherein M is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten;R.sup.1 and R.sup.2 are identical or different, and 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.2 -C.sub.4 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.5 and R.sup.6 are identical or different, and 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;R.sup.7 is ##STR9## --B(R.sup.11)--, --Al(R.sup.11)--, --Ge--, --Sn--, --O--, --S--, --SO--, --SO.sub.2 --, --N(R.sup.11)--, --CO--, --P(R.sup.11)--, or --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.1 -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, a 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, 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 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.3, R.sup.4 and R.sup.10 are identical or different and have the meanings stated for R.sup.11, R.sup.12 and R.sup.13 and two adjacent R.sup.10 radicals can be joined together to form a ring system.