公开(公告)号：US20170349683A1

公开(公告)日：2017-12-07

申请号：US15536919

申请日：2015-12-17

Applicant: Borealis AG

Inventor： Victor SUMERIN ,  Joseph THORMAN

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F210/08 ,  C08F2500/03 ,  C08F4/651

Abstract: This invention relates to a solid MgCl2 based Natta catalyst component for producing olefin polymers and preparation of said catalyst component. Further the invention relates to a Ziegler Natta catalyst comprising said solid catalyst component, Group 13 metal compound as cocatalyst and optionally external additives. The invention further relates to the use of said catalyst component in producing olefin polymers, especially ethylene polymers with desired properties.

公开(公告)号：US20240317901A1

公开(公告)日：2024-09-26

申请号：US18572410

申请日：2022-06-23

Applicant: BOREALIS AG

Inventor： Victor SUMERIN ,  Vasileios KANELLOPOULOS ,  Jani AHO ,  Matthias HOFF ,  Joana Elvira KETTNER ,  Irfan SAEED ,  Kalle KALLIO ,  Apostolos KRALLIS

IPC: C08F2/00 ,  C08F2/34 ,  C08F4/659 ,  C08F210/16

CPC classification number: C08F2/001 ,  C08F2/34 ,  C08F4/65912 ,  C08F210/16 ,  C08F2400/02

Abstract: The disclosure relates to a process for polymerising olefins in multi stage polymerisation process configuration, the process comprising a) polymerising in a first polymerisation step ethylene, optionally in the presence of at least one other alpha olefin comonomer, in the presence of a polymerisation catalyst so as to form a first polymer component (A); and b) polymerising in a second polymerisation step in gas phase a predetermined monomer mixture comprising ethylene and 1-hexene, optionally in the presence of at least one other alpha olefin comonomer, in the presence of the first polymer component (A) of step a), so as to form a second polymer component (B), wherein the multimodal polyethylene polymer produced by the present process comprises 1-hexene comonomer and at least one further C4-10-comonomer, and wherein the predetermined monomer mixture comprising ethylene and 1-hexene is fed into the second polymerisation step from the beginning of its start up. The disclosure further relates to use of 1-hexene in a gas phase olefin polymerisation step for improving performance of single-site polymerisation catalyst in multi-stage olefin copolymerisation process. The disclosure still further relates to a method for improving performance of single-site polymerisation catalyst in a multi-stage olefin polymerisation comprising feeding a predetermined monomer mixture comprising ethylene and 1-hexene into the gas phase polymerisation step from the beginning of its start up.

公开(公告)号：US20240301104A1

公开(公告)日：2024-09-12

申请号：US18572402

申请日：2022-06-23

Applicant: BOREALIS AG

Inventor： Matthias HOFF ,  Joana Elvira KETTNER ,  Vasileios KANELLOPOULOS ,  Victor SUMERIN ,  Jani AHO ,  Apostolos KRALLIS ,  Kalle KALLIO ,  Irfan SAEED ,  Erno ELOVAINIO

IPC: C08F210/16 ,  C08L23/08

CPC classification number: C08F210/16 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2308/00

Abstract: The disclosure relates to a process for polymerising olefins in multi stage polymerisation process configuration, comprising a) polymerising in a first polymerisation step first olefin monomer, optionally in the presence of at least one other alpha olefin monomer, in the presence of a polymerisation catalyst so as to form a first polymer component (A), and b) polymerising in a second polymerisation step in gas phase second olefin monomer, optionally in the presence of at least one other alpha olefin comonomer, in the presence of the first polymer component (A) of step a) and an induced swelling agent, so as to for a second polymer component (B), wherein the first polymer component (A) and the second polymer component (B) are produced at production rates meeting a predetermined target weight ratio of the second polymer component (B) to the first polymer component (A), the process comprising the steps of: i) determining a first weight ratio of the second polymer component (B) to the first polymer component (A) in the second polymerisation step, and ii) increasing the concentration of the induced swelling agent in the second polymerisation step if the determined first weight ratio is less than the predetermined target weight ratio, or iii) decreasing the concentration of the induced swelling agent in the second polymerisation step if the determined first weight ratio is greater than the predetermined target weight ratio, or iv) maintaining the concentration of the induced swelling agent in the second polymerisation step if the determined first weight ratio equals the predetermined target weight ratio. The disclosure further relates to use of an induced swelling agent in a gas phase polymerisation step for improving gas phase production split in a multi-stage olefin polymerisation process.

公开(公告)号：US20240287217A1

公开(公告)日：2024-08-29

申请号：US18573573

申请日：2022-06-23

Applicant: BOREALIS AG

Inventor： Pascal CASTRO ,  Vasileios KANELLOPOULOS ,  Victor SUMERIN ,  Jani AHO

IPC: C08F10/02

CPC classification number: C08F10/02

Abstract: The disclosure relates to process for polymerising olefins, the process comprising polymerising ethylene, optionally in the presence of at least one other alpha olefin comonomer, preferably C4-C10 alpha olefin comonomer, preferably in a multi-stage polymerisation configuration, in the presence of a single-site polymerisation catalyst to produce a polymer component; to produce a polyethylene polymer or a polyethylene copolymer having a particle size distribution of the resulting a polyethylene polymer powder or a polyethylene copolymer powder described by a lognormal distribution having a scale parameter less than 0.5, preferably less than 0.45, in particular from 0.1 to 0.45, more preferably from 0.15 to 0.4. The disclosure further relates to a single-site10 polymerisation catalyst, comprising (i) a transition metal complex; (ii) a cocatalyst; and optionally (iii) a support, preferably a silica support; wherein the single-site polymerisation catalyst is characterised by a compressive strength of at least 5 MPa, preferably at least 5.5 MPa, in particular from 6 to 25 MPa, more preferably from 7 to 20 MPa, even more preferably from 7 to 15 MPa. The disclosure further relates to use of the single-site polymerisation catalyst in the preparation of a polyethylene polymer component, a polyethylene polymer, or a polyethylene copolymer and to a polyethylene polymer or a polyethylene copolymer having a particle size distribution of the polyethylene polymer or the polyethylene copolymer in powder form described by a lognormal distribution having a scale parameter less than 0.5, preferably less than 0.45, in particular from 0.1 to 0.45, more preferably from 0.15 to 0.4, preferably obtained by the present process.

公开(公告)号：US20240279368A1

公开(公告)日：2024-08-22

申请号：US18569034

申请日：2022-06-10

Applicant: BOREALIS AG

Inventor： Felice DE SANTIS ,  Tuan Anh TRAN ,  Victor SUMERIN ,  Markku VAHTERI ,  Anna Maria HARTL

IPC: C08F10/02 ,  C08J5/18 ,  C08L23/08

CPC classification number: C08F10/02 ,  C08J5/18 ,  C08L23/0815 ,  C08J2323/06 ,  C08J2323/08 ,  C08J2423/06 ,  C08J2423/08 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02

Abstract: A process for producing a multimodal ethylene polymer comprising the steps of (i) polymerising ethylene in a first polymerisation step in the presence of a Ziegler-Natta polymerisation catalyst to produce a first ethylene homopolymer (PEI) having a melt flow rate MFR2 of from 100 to 300 g/10 min (ISO 1133-1 at 190° C. under 2.16 kg load); (ii) polymerising ethylene in a second polymerisation step in the presence of the first ethylene homopolymer to produce a first ethylene polymer mixture (PEM1) comprising the first ethylene homopolymer and a second ethylene homopolymer, said first ethylene polymer mixture having a melt flow rate MFR2 of from 200 to 1000 g/10 min, and wherein the MFR2 of the first ethylene homopolymer (PEI) is lower than the MFR2 of the first ethylene polymer mixture (PEM1); and (iii) copolymerising ethylene and at least one alpha-olefin comonomer in a third polymerisation step in the presence of the first ethylene polymer mixture to produce a second ethylene polymer mixture (PEM2) comprising the first ethylene polymer mixture and a third ethylene copolymer (PE3), said second ethylene polymer mixture having a density of from 937 to 950 kg/m3 (ISO 1183-2) and a melt flow rate MFR5 of from 0.1 to 5.0 g/10 min (ISO 1133-1 at 190° C. under 5 kg load).