Patent ID: 9605089
Date: 2017-03-28
CPC Classifications: C08F

Claim:
1. A process for preparing an attrition resistant procatalyst having increased surface area and regular shaped particles comprising: (i) providing magnesium metal granules of a first mean size and spherical shape; (ii) forming a reaction mass comprising the magnesium metal granules, a mixture of alcohols, and iodine so as to cause a reaction between the magnesium metal granules and the mixture of alcohols while controlling (a) agitation of an agitator, (b) shear in the reaction mass by regulating power consumption of the agitator per unit volume of the reaction mass and (c) temperature of the reaction in a manner that causes a reduction in the mean size of the magnesium metal granules with the reduced size magnesium metal granules retaining their spherical shape; (iii) condensing vapors which are produced in step (ii) in an overhead condenser and venting off hydrogen gas; (iv) separating a remaining mixture of alcohols to obtain a magnesium alkoxide based precursor; (v) treating said magnesium alkoxide based precursor with TiCl (vi) obtaining the procatalyst with increased surface area and having regular shaped particles.