公开(公告)号：US20230312789A1

公开(公告)日：2023-10-05

申请号：US18022595

申请日：2021-09-27

Applicant: Borealis AG

Inventor： Noureddine Ajellal ,  Mohammad Al-haj Ali ,  Joy Jie Cheng ,  Elena Pomakhina ,  Andreas Albrecht ,  Pritish Pradipkumar Sinha

IPC: C08F210/16 ,  C08F2/00 ,  C08F2/06 ,  C08F4/6592 ,  C08F4/52 ,  C08F255/02 ,  C08F255/08

CPC classification number: C08F210/16 ,  C08F2/001 ,  C08F2/06 ,  C08F4/65927 ,  C08F4/52 ,  C08F255/02 ,  C08F255/08

Abstract: Ethylene-1-octene copolymer characterized by a density in the range of 850 kg/m3 to 930 kg/m3 measured according to ISO 1183-187, a melt flow rate MFR2 (190° C., 2.16 kg) in the range of from 0.3 g/10 min to 100 g/10 min measured according to ISO 1133, a MFR10/MFR2 of from 5.0 to 15.0, a Mw/Mn of from 2.0 to 5.0, 1.0 to below 20 vinyl unsaturation units/100,000 C atoms, more than 5.0 to 35 vinylidene unsaturation units/100,000 C atoms, more than 5.0 to 30 vinylene unsaturation units/100,000 C atoms, more than 15.0 to 60 trisubstituted unsaturation units/100,000 C atoms, 26 to 150 total unsaturation units/100,000 C atoms, wherein the total unsaturation units/100,000 C atoms is the sum of vinyl unsaturation units/100,000 C atoms, vinylidene unsaturation units/100,000 C atoms, vinylene unsaturation units/100,000 C atoms and trisubstituted unsaturation units/100,000 C atoms, an unsaturation degree for unsaturation types e) to h) according to formula (I) wherein a vinyl unsaturation degree is in the range of from 5.0 to 15.0%, a vinylene unsaturation degree is in the range of from 20.0 to 30.0%, and wherein the sum of the vinyl unsaturation degree and vinylidene unsaturation degree is at least 30.0% and up to 50.0%.









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公开(公告)号：US20240199776A1

公开(公告)日：2024-06-20

申请号：US18285425

申请日：2022-04-11

Applicant: Borealis AG

Inventor： Davide Domenico Tranchida ,  Joy Jie Cheng ,  Andreas Albrecht ,  Elena Pomakhina

IPC: C08F210/16 ,  C08J5/18

CPC classification number: C08F210/16 ,  C08J5/18 ,  C08J2323/08

Abstract: The present invention relates to a copolymer of ethylene and an C3 to C10 alpha-olefin, wherein the copolymer has a density of 850 to 920 kg/m3 measured according to ISO 1183, characterized by a Full Width at Half maximum (FWHM) of the crystallization peak measured according to ISO 11357-3 following the equation (I): FWHM (° C.)

公开(公告)号：US12012504B2

公开(公告)日：2024-06-18

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: C08F210/16 ,  B29C43/00 ,  B29C45/00 ,  C08F2/00 ,  C08F2/34 ,  C08F210/02 ,  C08F210/08 ,  C08L23/06 ,  C08L23/16 ,  B29L31/56

CPC classification number: C08L23/06 ,  B29C43/003 ,  B29C45/0001 ,  C08F2/001 ,  C08F2/34 ,  C08F210/02 ,  C08F210/08 ,  C08F210/16 ,  B29L2031/56 ,  C08F2500/12 ,  C08F2500/17 ,  C08L2203/10 ,  C08L2203/30 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2207/062 ,  C08L2314/02

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：US20230257489A1

公开(公告)日：2023-08-17

申请号：US18014219

申请日：2021-07-07

Applicant: Borealis AG

Inventor： Andrey Buryak ,  Victor Sumerin ,  Franz Ruemer ,  Jari Aarila ,  Joy Jie Cheng

IPC: C08F10/02 ,  C08F210/14 ,  C08L23/08 ,  C08F2/00 ,  C08K3/04

CPC classification number: C08F10/02 ,  C08F210/14 ,  C08L23/0815 ,  C08F2/001 ,  C08K3/04 ,  C08L2203/18 ,  C08L2314/02 ,  C08K2201/019

Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene-hexene-1 copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B) and wherein fraction (B) is present in an amount of from 51.0 to 58.5 wt. %, preferably 52.0 to 57.5 wt. %, more preferably 53.0 to 57.0 wt. % based on the total weight of the base resin, wherein fraction (B) of the base resin has a content of units derived from hexene-1 from 0.80 to 1.45 mol %, preferably of from 0.82 to 1.35 mol % and more preferably of from 0.85 to 1.30 mol %, wherein the base resin has a number average molecular weight Mn of 8,500 g/mol or higher, and wherein the polyethylene composition has a melt flow rate MFRs from 0.10 to 0.30 g/10 min, preferably from 0.15 to 0.28, and still more preferably from 0.16 to 0.25 g/10 min, to a process for producing the polyethylene composition, to an article, especially a pipe comprising the polyethylene composition and to the use of the polyethylene composition for the production of an article, especially a pipe.