Patent ID: 8846811
Filing Date: 2014-09-30
Classification: B01J,C08F

Abstract:
1. A method to prepare a dual catalyst comprising (i) from 20 to 80 mole % of a phenoxide catalyst of the formula: wherein R 2 , R 3 , and R 5 are hydrogen atoms , R 1 is a cyclohexyl radical, R 4 is methoxy radical, and R 6 is a t-butyl radical M is selected from the group consisting of Ti, Zr and Hf, X is a chlorine atom, n is 1 or 2 and t is 2 or 3 and the sum of n+m is the valence of M. and (ii) from 80 to 20 mole % of a phosphinimine catalyst of the formula: wherein M is a group 4 metal having an atomic weight less than 179; PI is a phosphinimine ligand of the formula: wherein each R15 is independently selected from the group consisting of C 1-6 hydrocarbyl radicals; L is a monoanionic ligand selected from the group consisting of a cyclopentadienyl radical which is unsubstituted or substituted by a substituent selected from the group consisting of a C 1-6 alkyl radical which is substituted by 2n+1 fluorine atoms where n is the number of carbon atoms in the alkyl radical, and a C 6 F 5 radical which cyclopentadienyl ligand is optionally further substituted with up to two C 3-6 alkyl radicals in the 2 or 3 position relative to the fluorine containing substituent; Y is an activatable ligand selected from the group consisting of a hydrogen atom, a chlorine atom and a C 1-4 alkyl radical ; t is 1 or 2; q is 1; and p is an integer and the sum of t+q+p equals the valence state of M.; both on an inorganic support comprising: impregnating a porous particulate inorganic oxide support having an average particle size from 10 to 150 microns, a surface area greater than 100 m (ii) recovering the impregnated support; (iii) calcining said impregnated support at a temperature from 300° C. to 600° C. for a time from 2 to 20 hours in an inert atmosphere; (iv) contacting said impregnated calcined support with a hydrocarbyl solution containing at least 5 weight % of an aluminum activator compound of the formula R optionally separating said activated support from said hydrocarbyl solution; and contacting said activated support with one or more hydrocarbyl solutions containing at least 5 weight % of a phosphinimine catalyst, a phenoxide ligand containing catalyst or both; and (v) optionally contacting said catalyst with a hydrocarbyl solution of an anti static comprising (I) from 3 to 48 parts by weight of one or more polysulfones comprising: (II) from 3 to 48 parts by weight of one or more polymeric polyamides of the formula: wherein R 21 is an aliphatic hydrocarbyl group of 8 to 24 carbon atoms; R 22 is an alkylene group of 2 to 6 carbon atoms; R 23 is the group R 22 —HNR 21 ; R 20 is R 21 or an N-aliphatic hydrocarbyl alkylene group having the formula R 21 NHR 22 ; a, b and c are integers from 0 to 20 and x is 1 or 2; with the proviso that when R 20 is R 21 then a is greater than 2 and b=c=0, and when R 20 is R 21 NHR 22 then a is 0 and the sum of b+c is an integer from 2 to 20; and (III) from 3 to 48 parts by weight of C (vi) recovering and drying the catalyst.