Patent ID: 6228794
Filing Date: 2001-05-08
Classification: B01J,C07F,C08F

Abstract:
A catalyst composition comprising three components, (1), (2) and (3), wherein:Component (1) is a Lewis acid having the formula: ##STR17##whereinM is an atom selected from the group consisting of Group 13 elements in the oxidation state of (III);X.sup.1, X.sup.2 and X.sup.3 are the same or different and each is selected from the group consisting of hydrogen and the elements of Groups 14, 15, 16 and 17;R.sup.1, R.sup.2 and R.sup.3 are the same or different and each is selected from the group consisting of hydrogen, hydrocarbyl, a substituted hydrocarbyl, a nitrogen- or oxygen-containing heterocyclic, silyl, siloxy groups, and a metallic group, and two groups (R.sup.1, R.sup.2 or R.sup.3) may be combined to form with X.sup.1, X.sup.2, or X.sup.3 a cyclic group; andj, k and m are the same or different and are 0, 1, 2 or 3 as required to satisfy the valence of each of atoms X.sup.1, X.sup.2 and X.sup.3 to which R.sup.1, R.sup.2 and R.sup.3, respectively, are bound;Component (2) is a Lewis base having the formula E(R.sup.4), wherein E is an atom selected from the group consisting of Group 15 and 16 elements; R.sup.4 represents up to 3 substituents which are the same or different and are selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, silyl, alkoxy, aryloxy and amino; n is 0, 1, 2 or 3 as required to satisfy the valence of E to which R.sup.4 is bound; two R.sup.4 substituents may be bonded together which with E form a cyclic group; and Component (2), E(R.sup.4).sub.n, is utilized in the range of 0-1,000 molar equivalents relative to Component (1); andComponent (3) is an activator selected from the group consisting of (a) a salt of a labile, weakly coordinating or non-coordinating anion that is capable of abstracting one of the --X.sup.1 --(R.sup.1).sub.j, --X.sup.2 --(R.sup.2).sub.k or --X.sup.3 --(R.sup.3).sub.m groups from Component (1); (b) a neutral Lewis-acid that is capable of abstracting one of the --X--(R.sup.1).sub.j, --X.sup.2 --(R.sup.2).sub.k or --X.sup.3 --(R.sup.3) groups from Component (1); (c) an oxidizing agent capable of reacting with Component (1) and converting it to a cationic derivative; and (d) alumoxanes in a molar ratio of Components (1):(3) from 1:0.001-100,000.