公开(公告)号：US20180230253A1

公开(公告)日：2018-08-16

申请号：US15750391

申请日：2016-07-14

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： GIUSEPPINA MARIA ALGOZZINI ,  DIEGO BRITA ,  MASSIMO CENCI ,  GIANNI COLLINA ,  TIZIANO DALL'OCCO ,  MARIA DI DIEGO ,  BENEDETTA GADDI ,  OFELIA FUSCO ,  GIAMPIERO MORINI ,  LORELLA PEDRIALI

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

CPC classification number: C08F110/06 ,  C08F2/34 ,  C08F4/6492 ,  C08F4/651 ,  C08F10/06 ,  C08F110/02 ,  C08F2500/12 ,  C08F2500/15 ,  C08F2500/18 ,  C08F4/6543

Abstract: 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.