Patent ID: 6133387
Filing Date: 2000-10-17
Classification: C08F

Abstract:
A process for the polymerization of one or more C.sub.2-12 alpha olefins in the presence of:(a) a complex comprising a Group 8, 9 or 10 metal and ligand of formula I: ##STR13## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from the group consisting of a C.sub.1-10 alkyl or aryl radical; R.sup.6 and R.sup.7 are independently selected from the group consisting of C.sub.1-10 alkyl radicals and C.sub.6-14 aryl radicals which are unsubstituted or substituted by up to five substituents independently selected from the group consisting of a C.sub.1-6 hydrocarbyl radical or two hydrocarbyl radicals taken together may form a ring; C.sub.1-10 hydrocarbyl radical containing a heteroatom; and R.sup.8, R.sup.9 and R.sup.10 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical; and(b) an activator selected from the group consisting of:(i) aluminoxane compounds R.sup.20.sub.2 AlO(R.sup.20 AlO).sub.m AlR.sup.20.sub.2 wherein each R.sup.20 is independently selected from the group consisting of C.sub.1-20 hydrocarbyl radicals and m is from 5 to 30 to provide a molar ratio of aluminum to Group 8, 9 or 10 metal from 20:1 to 1000:1;(ii) 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 by 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;(iii) an activator of the formula [B(R.sup.18).sub.3 ] wherein R.sup.18 is as defined above and to provide a molar ratio of Group 8, 9 or 10 metal to boron from 1:1 to 1:3; and(iv) a mixture of activators (i), (ii) and (iii) and an aluminum compound selected from the group consisting of aluminum alkyls of the formula AlR.sub.3-n X.sub.n in which R is independently selected from the group consisting of C.sub.1-4 alkyl radical, X is a halogen atom and n is 0, 1, 2 or 3 to provide a ratio of Group 8, 9 or 10 metal to aluminum to boron from 1:1:1 to 1:100:5, at a temperature from 20 to 250.degree. C. and at a pressure from 15 to 15,000 psi.