Patent ID: 8076259

Claim:
A process for the preparation of a catalyst paste comprising the following steps: a) obtaining a slurry in an organic solvent comprising: a1) a support bearing functional groups; a2) a trialkylaluminum of formula (R a ) 3 Al wherein R a , equal to or different from each other is a C 1 -C 20 hydrocarbon radical optionally containing heteroatoms belonging to groups 13-17 of the periodic table of the elements; a3) a compound of formula (I): (R 1 ) x -A-(OH) y (I) wherein: A is an atom of group 13 or 15 of the Periodic Table; R 1 equal to or different from each other, are C 1 -C 40 hydrocarbon radicals optionally containing heteroatoms belonging to groups 13-17 of the periodic table of the elements; y is 1 or 2; x is 1 or 2; provided that x+y=3; and a4) a transition metal organometallic compound; and b) washing the resulting slurry at least one time with oil.