公开(公告)号：US10167354B2

公开(公告)日：2019-01-01

申请号：US15532677

申请日：2015-11-25

Applicant: Borealis AG

Inventor： Thomas Hjertberg ,  Lars Lindgren ,  Lena Lindbom ,  Roger Carlsson

IPC: C08F210/02 ,  C08K5/42 ,  H01B3/44 ,  C08F230/08 ,  C08F2/34

Abstract: A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerization process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerizing ethylene together with the silane groups containing comonomer in a polymerization zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The co-polymer of ethylene with silane groups containing comonomer can be used.

公开(公告)号：US20170327612A1

公开(公告)日：2017-11-16

申请号：US15532677

申请日：2015-11-25

Applicant: Borealis AG

Inventor： Thomas Hjertberg ,  Lars Lindgren ,  Lena Lindbom ,  Roger Carlsson

IPC: C08F210/02 ,  C08F230/08 ,  C08K5/42 ,  H01B3/44

CPC classification number: C08F210/02 ,  C08F230/08 ,  C08F2810/20 ,  C08K5/42 ,  H01B3/441 ,  H01B3/448 ,  C08F2500/12 ,  C08F4/34 ,  C08F2/38

Abstract: A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerisation process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerising ethylene together with the silane groups containing comonomer in a polymerisation zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The co polymer of ethylene with silane groups containing comonomer can be used.

公开(公告)号：US20240034849A1

公开(公告)日：2024-02-01

申请号：US18265621

申请日：2021-12-22

Applicant: Borealis AG

Inventor： Lars Efraimsson ,  Lena Lindbom ,  Bernt-Ake Sultan

IPC: C08J7/04 ,  C08L23/04 ,  C08K3/013

CPC classification number: C08J7/04 ,  C08L23/04 ,  C08K3/013 ,  C08L2203/202 ,  C08L2312/08 ,  C08L2207/062 ,  C08L2207/066

Abstract: The present invention relates to a crosslinkable polymer composition comprising (A) a high density ethylene homo- or copolymer having a density, determined according to ISO 1183, of at least 930 kg/m3, and (B) a copolymer of ethylene with a silane groups-containing comonomer having a content of silane groups-containing comonomer of not more than 4.0 wt %, wherein the polymer composition passes the tracking resistance test, determined according to IEC60587 (2007), method 2A at 4.5 kV for 1 h and 4.75 kV for 1 h on compression molded plaques prepared according to ISO 11357. The present invention further relates to a track resistant wire or cable, preferably a power cable or an optical cable comprising at least one layer of the above polymer composition or to the use of the polymer composition in a wire or cable for increasing track resistance, and/or for increasing fire retardancy along the length of the wire or cable. The present invention further relates to a method for manufacturing the above polymer composition, comprising a step of compounding or dry blending the high density ethylene homo- or copolymer (A) and the copolymer of ethylene with a silane groups-containing comonomer (B).

公开(公告)号：US10889670B2

公开(公告)日：2021-01-12

申请号：US16210581

申请日：2018-12-05

Applicant: Borealis AG

Inventor： Thomas Hjertberg ,  Lars Lindgren ,  Lena Lindbom ,  Roger Karlsson

IPC: C08F210/02 ,  C08F230/08 ,  C08K5/42 ,  H01B3/44

Abstract: A copolymer of ethylene with silane groups containing comonomer that is produced in a high pressure radical polymerisation process comprising the steps of: (a) compressing ethylene together with the silane groups containing comonomer under pressure in a compressor, wherein a compressor lubricant is used for lubrication, (b) polymerising ethylene together with the silane groups containing comonomer in a polymerisation zone, (c) separating the obtained ethylene from the unreacted products and recovering the separated ethylene copolymer in a recovery zone, wherein in step a) the compressor lubricant comprises a mineral oil and ethylene copolymer has a silane groups containing comonomer content of 0.5 to 3 wt % and an MFR2 of 0.3 to 10 g/10 min. The copolymer of ethylene with silane groups containing comonomer can be used.