公开(公告)号：US20240209125A1

公开(公告)日：2024-06-27

申请号：US18287152

申请日：2022-04-08

申请人： Basell Poliolefine Italia S.r.l.

发明人： Benedetta Gaddi ,  Gianni Colina ,  Nicola Pazi ,  Ofelia Fusco ,  Paolo Vincenzi ,  Maria Di Diego ,  Giorgia Panno ,  Simone De Cicco ,  Giuseppina Maria Algozzini

IPC分类号： C08F4/50 ,  C08F2/34 ,  C08F110/02 ,  C08F110/06

CPC分类号： C08F4/50 ,  C08F2/34 ,  C08F110/02 ,  C08F110/06

摘要： 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.