Patent ID: 6268453
Filing Date: 2001-07-31
Classification: C08F

Abstract:
A process for producing a polymer comprising contacting at least one olefin under polymerization conditions with a solid catalyst system prepared by producing a solid cocatalyst by(a) forming a reaction mixture by contacting a first material with an organoaluminum compound and an organic liquid diluent, said first material containing no more than 1 weight percent water and being selected from the group consisting of starch, flour, cellulose, silica, alumina, aluminum trifluoride, boron oxide, polyethylene, 1,5-hexanediol, and silica alumina zeolites,(b) passing water into the reaction mixture resulting from step (a) in the form of water dispersed in an inert gas to produce said solid cocatalyst, and(c) contacting the solid cocatalyst resulting from step (b) with at least one transition metal containing olefin polymerization catalyst.