公开(公告)号：US10435490B2

公开(公告)日：2019-10-08

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

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.

公开(公告)号：US20240218091A1

公开(公告)日：2024-07-04

申请号：US18285835

申请日：2022-03-24

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Dario Liguori ,  Tiziano Dall'occo ,  Giampiero Morini ,  Gianni Vitale

IPC: C08F10/02

CPC classification number: C08F10/02

Abstract: A pre-polymerized catalyst component for the polymerization of olefins made from or containing (a) a solid catalyst component made from or containing Ti, Mg, and a halogen and optionally, a bidentate electron donor compound (BE) in an amount such that the molar ratio (BE)/Ti ranges from 0 to 0.3, and (b) an ethylene (co)polymer in an amount ranging from 0.1 g up to less than 30 g per g of the solid catalyst component, and having an intrinsic viscosity, measured in tetraline at 135° C., of at least 3.0 dL/g, wherein the pre-polymerized catalyst component has a porosity measured by mercury method in the range 0.1 to 1 cm3/g.

公开(公告)号：US10730974B2

公开(公告)日：2020-08-04

申请号：US15750469

申请日：2016-08-03

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Giampiero Morini ,  Massimo Covezzi ,  Tiziano Dall'occo ,  Dario Liguori ,  Fabrizio Piemontesi ,  Gianni Vitale

IPC: C08F110/06 ,  C08F4/654 ,  C08F4/655 ,  C08F4/656 ,  C08F4/651 ,  C08F10/06 ,  C08F110/02 ,  C08F2/34 ,  C08F4/649

Abstract: A gas-phase process for the homopolymerization or copolymerization of propylene with other olefins, including carrying out the polymerization in the presence of a catalyst system made from or containing: (a) a solid catalyst component made from or containing Mg, Ti, halogen, an electron donor selected from 1.3-diethers and an olefin polymer in a specific amount; (b) an aluminum alkyl compound and (c) an external electron donor (ED) compound, wherein components (b) and (c) being employed in amounts such that the Al/(ED) molar ratio ranges from about 2 to about 200.