Prepolymerized catalyst components for the polymerization of olefins

Abstract

A prepolymerized catalyst component for the polymerization of olefins made from or containing (i) a solid catalyst component made from or containing Ti, Mg, and an internal donor mixture (IDM) made from or containing (a) from 15 to 75% of 1,3-diethers and (b) from 25 to 85% of succinates based on the total amount of 1,3-diethers and succinates, and (ii) an amount of an ethylene polymer ranging from 0.1 up to 3 g per g of the solid catalyst component (i), wherein the prepolymerized catalyst component has an intrinsic viscosity [η] in tetraline at 135° C. ranging from 2.5 to 5.20 dl/g.

Dependencies are inferred from the claim text.