公开(公告)号：US10696762B2

公开(公告)日：2020-06-30

申请号：US15504903

申请日：2015-08-19

Applicant: BOREALIS AG

Inventor： Annika Smedberg ,  Villgot Englund ,  Per-Ola Hagstrand ,  Virginie Erikson ,  Emy Silfverberg

IPC: C08F110/02 ,  C08F210/18 ,  H01B3/44 ,  B32B1/08 ,  B32B27/32 ,  B32B27/08 ,  C08K5/14 ,  H01B9/02 ,  C08F2/02

Abstract: The present invention relates to a crosslinked polymer composition comprising a crosslinked polyolefin, wherein the polymer composition comprises, prior to crosslinking, a polyolefin and peroxide which is in an amount of less than 35 mmol —O—O-/kg polymer composition, characterized in that the crosslinked polymer composition has been in a direct contact with a semiconductive composition for 24 h at 70° C., and that the crosslinked polymer composition thereafter has an electrical DC-conductivity of 150 fS/m or less, wherein the electrical DC-conductivity is measured in accordance with “DC conductivity method”, as described under “Determination methods”, on a plaque of the crosslinked polymer composition at 70° C. and 30 kV/mm mean electric field from a non-degassed and 1 mm thick plaque sample of the crosslinked polymer composition; a layered structure, cable, e.g. a power cable, use of the crosslinked polymer composition and the structured layer, both, for producing a crosslinked power cable, e.g., a cross linked direct current (DC) power cable; and a process for producing a cable.

公开(公告)号：US20170233508A1

公开(公告)日：2017-08-17

申请号：US15504903

申请日：2015-08-19

Applicant: BOREALIS AG

Inventor： Annika Smedberg ,  Villgot Englund ,  Per-Ola Hagstrand ,  Virginie Erikson ,  Emy Silfverberg

IPC: C08F110/02 ,  C08K5/14 ,  C08F210/18 ,  H01B3/44 ,  H01B9/02

Abstract: The present invention relates to a crosslinked polymer composition comprising a crosslinked polyolefin, wherein the polymer composition comprises, prior to crosslinking, a polyolefin and peroxide which is in an amount of less than 35 mmol —O—O-/kg polymer composition, characterized in that the crosslinked polymer composition has been in a direct contact with a semiconductive composition for 24 h at 70° C., and that the crosslinked polymer composition thereafter has an electrical DC-conductivity of 150 fS/m or less, wherein the electrical DC-conductivity is measured in accordance with “DC conductivity method”, as described under “Determination methods”, on a plaque of the crosslinked polymer composition at 70° C. and 30 kV/mm mean electric field from a non-degassed and 1 mm thick plaque sample of the crosslinked polymer composition; a layered structure, cable, e.g. a power cable, use of the crosslinked polymer composition and the structured layer, both, for producing a crosslinked power cable, e.g., a cross linked direct current (DC) power cable; and a process for producing a cable.