公开(公告)号：US20220403059A1

公开(公告)日：2022-12-22

申请号：US17777365

申请日：2020-11-05

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： DIEGO BRITA ,  GIANNI COLLINA ,  DANIELE EVANGELISTI ,  BENEDETTA GADDI ,  PIERO GESSI ,  GIAMPIERO MORINI ,  SILVIA SOFFRITTI ,  PAOLO VINCENZI

IPC: C08F4/602

Abstract: A process for preparing a catalyst component made from or containing Mg, Ti, and at least an electron donor compound (ID), including the steps of: (a) reacting a Mg based compound with a Ti compound, having at least a Ti—Cl bond, in an amount such that the Ti/Mg molar ratio is greater than 3 and at a temperature ranging from 0 to 150° C., thereby yielding an intermediate solid catalyst component containing Mg and Ti; and (b) contacting the intermediate solid catalyst component with a gaseous stream containing the electron donor compound (ID) in a gaseous dispersing medium, thereby yielding a final solid catalyst component having an ID/Ti molar ratio ranging from 0.5:1 to 20:1.