公开(公告)号：WO2023057519A1

公开(公告)日：2023-04-13

申请号：PCT/EP2022/077711

申请日：2022-10-05

Applicant: BOREALIS AG

Inventor： NILSSON, Susanne ,  CHENG, Joy Jie ,  PRADES, Floran Régis ,  GITSAS, Antonios

IPC: C08K3/36 ,  C08K5/3492 ,  C08L23/10 ,  H01B3/44 ,  C08K3/22 ,  C08K2003/2227 ,  C08K5/34922 ,  C08L23/04 ,  C08L23/06 ,  C08L23/12 ,  C08L23/14 ,  H01B3/441

Abstract: The invention provides a cable, preferably a power cable, comprising one or more conductors surrounded by at least one layer, preferably an insulation layer, wherein said layer comprises a polymer composition comprising: (i) at least 75 wt% of an ethylene based plastomer; and (ii) 0.2 to 10 wt% of an amine filler, oxide filler or mixture thereof; and wherein said polymer composition has a dielectric loss expressed as tan δ (50 Hz) of 200 x 10-4 or less, when measured at 500 V/mm and 90°C as described in the description part under "Determination methods".

公开(公告)号：WO2022069411A1

公开(公告)日：2022-04-07

申请号：PCT/EP2021/076519

申请日：2021-09-27

Applicant: BOREALIS AG

Inventor： AJELLAL, Noureddine ,  AL-HAJ ALI, Mohammad ,  CHENG, Joy Jie ,  POMAKHINA, Elena ,  ALBRECHT, Andreas ,  SINHA, Pritish Pradipkumar

IPC: C08F4/6592 ,  C08F210/16

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%.

公开(公告)号：WO2022008607A1

公开(公告)日：2022-01-13

申请号：PCT/EP2021/068868

申请日：2021-07-07

Applicant: BOREALIS AG

Inventor： BURYAK, Andrey ,  SUMERIN, Victor ,  RUEMER, Franz ,  ÄÄRILÄ, Jari ,  CHENG, Joy Jie

IPC: C08L23/08 ,  F16L9/12

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/10min, preferably from 0.15 to 0.28, and still more preferably from 0.16 to 0.25 g/10min, 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.

公开(公告)号：WO2019229209A1

公开(公告)日：2019-12-05

申请号：PCT/EP2019/064134

申请日：2019-05-30

Applicant: BOREALIS AG

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

IPC: C08F110/02 ,  C08F2/00 ,  C08L23/08

Abstract: The invention provides a process for the preparation of a multimodal high density polyethylene (HDPE) having a melt flow rate (MFR 2 ) of 0.1 to 4.0 g/1O 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 MFR 2 from 10 to 500 g/1O 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 MFR 2 from 50 to 1000 g/1O 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.