公开(公告)号：US11920018B2

公开(公告)日：2024-03-05

申请号：US16178243

申请日：2018-11-01

Applicant: BOREALIS AG

Inventor： Takashi Uematsu ,  Christer Svanberg ,  Karl-Michael Jäger ,  Fredrik Skogman ,  Koenraad Noyens ,  Peter Walter ,  Malin Johansson

IPC: C08K3/04 ,  B29B9/10 ,  B29B9/12 ,  B29K23/00 ,  B29K105/16 ,  H01B7/02 ,  B29K507/04

CPC classification number: C08K3/04 ,  B29B9/10 ,  B29B9/12 ,  H01B7/0216 ,  B29K2023/0633 ,  B29K2105/16 ,  B29K2507/04 ,  B29K2995/0005 ,  C08L2203/202 ,  C08K3/04 ,  C08L23/0846

Abstract: The invention provides a novel semiconductive polymer composition with improved smoothness and dispersibility of carbon black when compounding the polymer composition and feasible balance with other properties such as volume resistivity. The semiconductive polymer composition comprises (a) from 30 to 90 wt % of a polymer component, (b) from 10 to 70 wt % of carbon black and the carbon black (b) has a mass pellet strength (MPS) according to ASTM D1937-13 of from 50 to 250 N. The invention further relates to a process for preparing the semiconductive polymer composition comprising the steps of: i) introducing 30-90 wt % of a polymer component as defined above and 0-8 wt % additives in a mixer device and mixing the polymer component and additives at elevated temperature such that a polymer melt is obtained; ii) adding 10-70 wt % of a carbon black as defined above to the polymer melt and further mixing of the polymer melt.

公开(公告)号：US10529469B2

公开(公告)日：2020-01-07

申请号：US15780998

申请日：2016-12-09

Applicant: BOREALIS AG

Inventor： Asa Wannerskog ,  Francisco Galante ,  Peter Walter ,  Ola Fagrell

IPC: H01B13/14 ,  H01B3/44 ,  H01B13/00 ,  H01B9/00

Abstract: The present invention relates to a process for manufacturing a power cable, which power cable comprises at least one core comprising a conductor and an expanded and crosslinked insulation layer surrounding said conductor, wherein said process comprises the steps a) to d): a) providing a blend of: a polymer composition comprising a polyolefin material, which polyolefin material bears silane moieties; a catalyst and a foaming system, wherein the provided blend will comprise at least 0.1% by weight of a foaming agent, with respect to the total weight of the polyolefin material; b) extruding a blend, as described in step a), on the conductor to form an insulation layer; c) foaming the insulation layer; and d) crosslinking the insulation layer; a power cable which is obtainable by the process, and use of the power cable.