公开(公告)号：US20190119419A1

公开(公告)日：2019-04-25

申请号：US15739649

申请日：2016-06-23

Applicant: BOREALIS AG

Inventor： Alexandra Romina ALBUNIA ,  Ravindra TUPE ,  Victor SUMERIN ,  John JAMIESON ,  Jani AHO ,  Markku VAHTERI ,  Jarmo KELA ,  Renate ECKMAYR

IPC: C08F210/16 ,  C08F110/02 ,  C08F2/00 ,  C08F2/14 ,  C08F2/34 ,  C08F4/02

CPC classification number: C08F210/16 ,  C08F2/001 ,  C08F2/14 ,  C08F2/34 ,  C08F4/022 ,  C08F110/02 ,  C08F2410/01 ,  C08F2410/05 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2800/20 ,  C08L23/06 ,  C08L23/0815

Abstract: A process for producing copolymers of ethylene and at least one alpha-olefin having from 4 to 10 carbon atoms in the presence of a solid Ziegler-Natta catalyst comprising of magnesium, titanium, halogen and an internal organic compound, the copolymer having a density of from 906 to 937 kg/m3 and a melt flow rate MFR21 measured at 190° C. under 21.6 kg load of from 3 to 150 g/10 min. The process includes the steps of (A) homopolymerising ethylene or copolymerising ethylene and a first alpha-olefin having from 4 to 10 carbon atoms in a first polymerisation stage in the presence of the polymerisation catalyst, hydrogen and optionally the first alpha-olefin; (B) copolymerising ethylene and a second alpha-olefin having from 4 to 10 carbon atoms in a second polymerisation stage in the presence of the first homo- or copolymer of ethylene and the Ziegler-Natta catalyst; and (C) recovering the polymer mixture.

公开(公告)号：US20220119564A1

公开(公告)日：2022-04-21

申请号：US17298157

申请日：2019-11-29

Applicant: BOREALIS AG

Inventor： Girish Suresh GALGALI ,  John JAMIESON

IPC: C08F210/16 ,  C08L23/08 ,  C08F2/00 ,  C08F2/34 ,  C08F210/08 ,  C08F210/14

Abstract: The present invention relates to a process to produce a polymer, a corresponding polymer and a article comprising a polymer made by the process according to the invention.

公开(公告)号：US20180079899A1

公开(公告)日：2018-03-22

申请号：US15579377

申请日：2016-05-30

Applicant: BOREALIS AG

Inventor： Ravindra TUPE ,  John JAMIESON ,  Jarmo KELA ,  Alexandra Romina ALBUNIA ,  Ricardo GODOY-LOPEZ ,  Markku VAHTERI

IPC: C08L23/08 ,  C08J5/18 ,  C08F210/16

CPC classification number: C08L23/0815 ,  B32B27/08 ,  B32B27/32 ,  B32B27/327 ,  B32B2250/242 ,  B32B2270/00 ,  B32B2307/54 ,  B32B2307/558 ,  B32B2307/5825 ,  B32B2307/708 ,  B32B2307/732 ,  B32B2439/46 ,  B32B2439/70 ,  B32B2553/00 ,  C08F2/001 ,  C08F210/16 ,  C08F2500/05 ,  C08F2500/26 ,  C08J5/18 ,  C08J2323/08 ,  C08L2203/16 ,  C08L2205/025 ,  C08F4/6555 ,  C08F4/025 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/08 ,  C08F210/14

Abstract: The present invention is directed to a multimodal polyethylene copolymer comprising a first and a second copolymer of ethylene and at least two alpha-olefin comonomers. Such multimodal copolymers are highly suitable for conversion processes that require a high Draw Down Ratio, like the production of thin films. Such multimodal polyethylene copolymers provide a good impact strength in the sense of a high Dart drop impact strength (DDI) and good isotropy of the films produces thereof. The invention further presents final articles such as films made therefrom.

公开(公告)号：US20230203286A1

公开(公告)日：2023-06-29

申请号：US17926265

申请日：2021-05-19

Applicant: BOREALIS AG

Inventor： Anna HJÄRTFORS ,  John JAMIESON ,  Ravindra TUPE ,  Pauli LESKINEN

IPC: C08L23/08 ,  H01B3/44

CPC classification number: C08L23/0815 ,  H01B3/441 ,  C08L2205/025 ,  C08L2203/202

Abstract: A multimodal polyethylene composition having a lower molecular weight (LMW) ethylene homo or copolymer component (A) and a higher molecular weight ethylene copolymer component (B); wherein the LMW component comprises two fractions (ai) and (aii); wherein the polymer composition has a density of 930 kg/m3 or more (ISO1183), such as 938 to 955 kg/m3, an MFR2 (ISO1133 at 190° C. and 2.16 kg load) in the range of 0.05 to 10 g/10 min, a flex modulus of up to 800 MPa (ISO 178:2010), such as 300 to 800 MPa (ISO 178:2010) and a taber abrasion resistance of 8.0 to 13.0 mg/1000 cycle (ASTM D 4060: 2014).

公开(公告)号：US20180148570A1

公开(公告)日：2018-05-31

申请号：US15580749

申请日：2016-05-30

Applicant: BOREALIS AG

Inventor： Ravindra TUPE ,  John JAMIESON ,  Jarmo KELA ,  Alexandra Romina ALBUNIA ,  Ricardo GODOY-LOPEZ ,  Markku VAHTERI

IPC: C08L23/08 ,  C08J5/18

CPC classification number: C08L23/0815 ,  B32B27/08 ,  B32B27/32 ,  B32B27/327 ,  B32B2250/242 ,  B32B2270/00 ,  B32B2307/516 ,  B32B2307/518 ,  B32B2307/558 ,  B32B2307/732 ,  B32B2439/46 ,  B32B2439/70 ,  B32B2553/00 ,  C08F210/16 ,  C08J5/18 ,  C08J2323/08 ,  C08J2423/08 ,  C08L2203/16 ,  C08L2205/025 ,  C08F210/14 ,  C08F210/08 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/07 ,  C08F2/001 ,  C08F4/6546

Abstract: The present invention is directed to a multimodal polyethylene copolymer comprising a first and a second copolymer of ethylene and at least two alpha-olefin comonomers. The multimodal polyethylene copolymer is highly suitable for the production of films providing high impact strength in the sense of high Dart drop impact strength (DDI) and low extractables. The invention further presents final articles such as films made therefrom.

公开(公告)号：US20210147660A1

公开(公告)日：2021-05-20

申请号：US17056855

申请日：2019-05-30

Applicant: BOREALIS AG

Inventor： Anh Tuan TRAN ,  Alexandra Romina ALBUNIA ,  Joy Jie CHENG ,  Joseph THORMAN ,  John JAMIESON ,  Ravindra TUPE

IPC: C08L23/06 ,  C08F210/02 ,  C08F210/08 ,  C08F2/00 ,  C08F2/34 ,  B29C45/00 ,  B29C43/00

Abstract: The invention provides a process for the preparation of a multimodal high density polyethylene (HDPE) having a melt flow rate (MFR2) of 0.1 to 4.0 g/10 min, said process comprising: (i) polymerising ethylene in a first polymerisation stage in the presence of a Ziegler-Natta catalyst to prepare a first ethylene homopolymer having a MFR2 from 10 to 500 g/10 min; (ii) polymerising ethylene in a second polymerisation stage in the presence of said catalyst and said first ethylene homopolymer to prepare an ethylene homopolymer mixture comprising said first ethylene homopolymer and a second ethylene homopolymer, said mixture having a MFR2 from 50 to 1000 g/10 min; and (iii) polymerising ethylene and at least one alpha-olefin comonomer in a third polymerisation stage in the presence of said catalyst and said ethylene homopolymer mixture to prepare said multimodal HDPE.

公开(公告)号：US20160280821A1

公开(公告)日：2016-09-29

申请号：US15032999

申请日：2014-12-12

Applicant: BOREALIS AG

Inventor： Yi LIU ,  John JAMIESON ,  Ravindra TUPE ,  Jarmo KELA

IPC: C08F210/16 ,  C08J5/18 ,  C08L23/08

CPC classification number: C08F210/16 ,  C08F2/001 ,  C08J5/18 ,  C08J2323/08 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2205/03 ,  C08F210/08 ,  C08F2500/07 ,  C08F2500/12 ,  C08F2500/26 ,  C08F2500/08 ,  C08F4/025 ,  C08F4/6492 ,  C08F4/6555

Abstract: The present invention is a process for producing copolymers of ethylene and alpha-olefins having from 4 to 10 carbon atoms in three polymerization stages where a low molecular weight copolymer of ethylene is produced in two of the stages and a high molecular weight copolymer in one of the stages. The resulting copolymers have a low content of extractable material and can be extruded to films which can be used in food contact applications.

Abstract translation: 本发明是在三个聚合阶段中制备乙烯和具有4-10个碳原子的α-烯烃的共聚物的方法，其中在两个阶段中制备低分子量共聚物的乙烯和一种高分子量共聚物 阶段 所得共聚物的可萃取材料含量低，可以挤出成可用于食品接触应用的薄膜。