公开(公告)号：US10435490B2

公开(公告)日：2019-10-08

申请号：US15750391

申请日：2016-07-14

申请人： BASELL POLIOLEFINE ITALIA S.R.L.

发明人： Giuseppina Maria Algozzini ,  Diego Brita ,  Massimo Cenci ,  Gianni Collina ,  Tiziano Dall'occo ,  Maria Di Diego ,  Benedetta Gaddi ,  Ofelia Fusco ,  Giampiero Morini ,  Lorella Pedriali

IPC分类号： C08F110/02 ,  C08F110/06 ,  C08F10/06 ,  C08F2/34 ,  C08F4/649 ,  C08F4/651

摘要： A Prepolymerized catalyst component for the polymerization of olefins comprising a solid catalyst component which comprises Mg, Ti, and chlorine atoms and an electron donor (ID) said prepolymerized catalyst component being characterized by the fact that: the electron donor (ID) is constituted by at least 80% mol of 1,3 diethers with respect to the total molar amount of electron donor compounds; the prepolymerized catalyst has a porosity due to pores with diameters up to 1 μm of less than 0.2 cm3/g; it contains an amount of ethylene prepolymer of less than 45% with respect to the total weight of prepolymerized catalyst.