Patent ID: 6013745
Filing Date: 2000-01-11
Classification: C08F

Abstract:
A process for the solution or slurry polymerization of one or more C.sub.2-12 alpha olefins to a weight average molecular weight of at least 1500 in the presence of a catalyst selected from the group consisting of:(i) complexes of formula (II) ##STR9## wherein: M is a transition metal selected from the group consisting of Cr, V, Ti, Zr and Hf; F and J are independently selected from the group consisting of Cl, Br, I and H, and C.sub.1-8 alkyl or aromatic ligands which are unsubstituted or substituted by one or more substituents selected from the group consisting of C.sub.1-4 alkyl radicals, chlorine atoms, and fluorine atoms; Q is selected from the group consisting of (CH.sub.2).sub.n wherein n is 1, 2 or 3; a C.sub.2-4 alkyl radical; a disubstituted C.sub.6 aryl radical; R.sup.6 N wherein R.sup.6 is selected from the group consisting of C.sub.1-6 straight chained or branched alkyl radicals, C.sub.6-10 aryl radicals which are unsubstituted or substituted by a C.sub.1-4 alkyl radical; s and t are 0, 1 or 2 and p and q independently are 0 or 1 provided s+t-p-q+2=the valence of the metal; R.sup.14,R.sup.15, R.sup.16 and R.sup.17 are independently selected from the group consisting of C.sub.1-10 straight chained, branched or cyclic alkyl radicals; C.sub.6-14 monoaromatic aryl radicals which are unsubstituted or substituted by up to three substituents selected from the group consisting of C.sub.1-8 alkyl radicals; R.sup.12 and R.sup.13, if present, are independently selected from the group consisting of a hydrogen atom, C.sub.1-8 alkyl or aromatic radicals which are unsubstituted or substituted by a C.sub.1-4 alkyl radical, and a radical of the formula SiR.sup.9 R.sup.10 R.sup.11 wherein R.sup.9, R.sup.10 and R.sup.11 are independently selected from the group consisting of C.sub.1-8 alkyl or aromatic radicals which is unsubstituted or substituted by one or more C.sub.1-4 alkyl radicals;and one or more activators selected from the group consisting of activators of the formula AlR.sub.3-n X.sub.n in which R is independently selected from the group consisting of a C.sub.1-8 alkyl radical and a C.sub.1-8 alkoxy radical, X is a halogen atom and n is 0, 1 or 2; and aluminoxane compounds;(ii) complexes of formula (IV) ##STR10## wherein M, Q, F, J, R.sup.12, R.sup.13, R.sup.14, R.sup.15, R.sup.16, R.sup.17, p, q, s, and t are as defined above;and A.sup.- is an anion selected from the group consisting of anions of the formula [B(R.sup.18).sub.4 ].sup.- wherein each R.sup.18 is independently selected from the group consisting of phenyl radicals which are unsubstituted or substituted with up to 5 substituents selected from the group consisting of a fluorine atom, a C.sub.1-4 alkyl or alkoxy radical which is unsubstituted or substituted by a fluorine atom and a silyl radical of the formula --Si--(R.sup.19).sub.3 ; wherein each R.sup.19 is independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical, provided s+t-p-q+3=the metal valence number;and optionally an activator of the formula AlR.sub.3-n X.sub.n in which R is independently selected from the group consisting of a C.sub.1-8 alkyl radical and a C.sub.1-8 alkoxy radical, X is a halogen atom and n is 0, 1 or 2; and(iii) an adduct of complex II, as defined above, with an activator of the formula [B(R.sup.18).sub.3 ] wherein R.sup.18 is as defined above;and optionally an activator of the formula AlR.sub.3-n X.sub.n in which R is independently selected from the group consisting of a C.sub.1-8 alkyl radical and a C.sub.1-8 alkoxy radical, X is a halogen atom and n is 0, 1 or 2wherein the mole ratio of aluminum to transition metal of at least 5:1 and molar ratio of transition metal to boron from 1:1 to 1:3; in a hydrocarbon selected from the group comprising C.sub.4-12 aliphatic and aromatic compounds which are unsubstituted or substituted with a C.sub.1-4 alkyl radical; at a temperature from 50.degree. C. to 250.degree. C.; and at a pressure from 15 to 4500 psi.