Patents by Inventor Per-Ola Hagstrand

Per-Ola Hagstrand has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11410788
    Abstract: The invention relates to power cable polymer composition which comprises a single site polyethylene (SSPE), a power cable, for example, a high voltage direct current (HV DC), a power cable polymer insulation, use of a polymer composition for producing a layer of a power cable, and a process for producing a power cable.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 9, 2022
    Assignee: BOREALIS AG
    Inventors: Villgot Englund, Per-Ola Hagstrand, Solveig Johansson, Virginie Eriksson
  • Publication number: 20220235211
    Abstract: The invention provides a polymer composition comprising (i) an LDPE; (ii) polyolefin (A) comprising epoxy groups; and (iii) polyolefin (B) comprising carboxylic acid groups and/or precursor thereof.
    Type: Application
    Filed: May 15, 2020
    Publication date: July 28, 2022
    Inventors: Per-Ola HAGSTRAND, Thomas GKOURMPIS, Oscar PRIETO, Denis YALALOV, Christian MÜLLER, Ouyang YINGWEI, Massimiliano MAURI
  • Patent number: 11390699
    Abstract: A polymer composition includes a crosslinked polyolefin with improved DC electrical properties. Prior to crosslinking, the polymer composition includes a polyolefin and peroxide, in which the peroxide is in an amount of less than 35 mmol —O—O— per kilogram of the polymer composition. A cable can be surrounded by at least one layer including the polymer composition.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 19, 2022
    Assignee: Borealis AG
    Inventors: Annika Smedberg, Birgitta Kallstrand, Ulf Nilsson, Per-Ola Hagstrand, Villgot Englund, Gustavo Dominguez, Carl-Olof Olsson, Liu Rongsheng, Marc Jeroense
  • Publication number: 20220204734
    Abstract: The invention provides a polymer composition comprising (i) an LDPE; (ii) a polypropylene; (iii) polyolefin (A) comprising epoxy groups; and (iii) polyolefin (B) comprising carboxylic acid groups and/or precursor thereof.
    Type: Application
    Filed: May 15, 2020
    Publication date: June 30, 2022
    Inventors: Per-Ola HAGSTRAND, Thomas GKOURMPIS, Oscar PRIETO, Denis YALALOV, Christian MÜLLER, Yingwei OUYANG
  • Patent number: 11359080
    Abstract: The invention relates to polymer composition comprising a polyolefin (a) and an inorganic filler (b) wherein the polyolefin (a) is obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil, power cable, for example a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: June 14, 2022
    Assignee: BOREALIS AG
    Inventors: Villgot Englund, Per-Ola Hagstrand, Annika Smedberg, Ulf Nilsson
  • Patent number: 11355260
    Abstract: The present invention relates to a polymer composition comprising a polyolefin, peroxide and a sulphur containing antioxidant, wherein said peroxide is present in an amount which corresponds to X mmol —O—O—/kg polymer composition and said sulphur containing antioxidant is present in an amount which corresponds to Y mmol —OH/kg polymer composition, wherein Y1?Y?Y2, X?45 and 0.9*Y+m?X?n?k*Y, wherein Y1 is 0.50 and Y2 is 10, and m is 0.8, n is 70 and k is 4.7; and wherein said polymer composition has a melt flow rate (MFR) of less than 1.7, and said polymer composition comprises less than 0.05% by weight (wt %) 2,4-Diphenyl-4-methyl-1-pentene; a crosslinked polymer composition, and use thereof, a power cable insulation, a power cable, useful in high voltage (HV DC) and extra high voltage (EHV DC) direct current applications, and a method for reducing electrical conductivity of a crosslinked polymer composition.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: June 7, 2022
    Assignee: BOREALIS AG
    Inventors: Per-Ola Hagstrand, Villgot Englund, Annika Smedberg
  • Patent number: 11286315
    Abstract: The invention relates to a polyethylene having a melt flow rate at (2.16) kg loading (MFR2), determined according to method ISO1133-1:2011, which MFR2 is A g/10 min and A1?A?A2; wherein A1 is (0.5) and A2 is (1.70), and containing a total amount of vinyl groups which is B vinyl groups per (1000) carbon atoms, and B1?B, wherein B1 is (0.45), determined according to method ASTM D6248-98, a polymer composition, an article being e.g. a cable, e.g. a power cable, and processes for producing a polyethylene, a polymer composition and an article, and an article; useful in different end applications, such as wire and cable (W&C) applications.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 29, 2022
    Assignee: Borealis AG
    Inventors: Annika Smedberg, Emil Hjärtfors, Villgot Englund, Per-Ola Hagstrand, Bernt-Åke Sultan, Thomas Hjertberg
  • Patent number: 11242449
    Abstract: The invention relates to a foamable ethylene polymer composition comprising at least one antioxidant, at least one process aid and at least 80 wt % of a peroxide-treated ethylene polymer composition. The foamable ethylene polymer composition has melt strength of at least 2 cN, a density of 940 to 970 kg/m3, and dissipation factor measured at 1.9 GHz of 50-80?10?6. The invention further relates to a process for making such a foamable ethylene polymer composition, and use of the foamable ethylene polymer composition in a foamed cable insulation.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: February 8, 2022
    Assignee: BOREALIS AG
    Inventors: Mattias Bergqvist, Thomas Hjertberg, Per-Ola Hagstrand, Åsa Hermansson
  • Patent number: 11078312
    Abstract: A cross-linked polymer composition includes a cross-linked polyolefin. Peroxide in an amount of less than 35 mmol —O—O—/kg polymer composition may be included in the polymer composition prior to crosslinking the polyolefin. Suitable polyolefins that can be cross-linked in the polymer composition include an unsaturated LDPE homopolymer and an unsaturated LDPE copolymer of ethylene with one or more comonomers. Such unsaturated LDPE polymer can contain vinyl groups, and the total amount of vinyl groups present in the unsaturated LDPE can be higher than 0.05/1000 carbon atoms. The cross-linked polymer composition can be used, for example, in producing a cross-linkable and cross-linked article such as a cross-linkable and cross-linked direct current (DC) or other type of power cable.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: August 3, 2021
    Assignee: BOREALIS AG
    Inventors: Annika Smedberg, Birgitta Kallstrand, Ulf Nilsson, Per-Ola Hagstrand, Villgot Englund, Gustavo Dominguez, Carl-Olof Olsson, Liu Rongsheng, Marc Jeroense
  • Publication number: 20210217538
    Abstract: The invention relates to power cable polymer composition which comprises a thermoplastic polyethylene having a chlorine content which is less than X, wherein X is 10 ppm, a power cable, for example, a high voltage direct current (HV DC), a power cable polymer insulation, use of a polymer composition for producing a layer of a power cable, and a process for producing a power cable.
    Type: Application
    Filed: January 27, 2021
    Publication date: July 15, 2021
    Inventors: Villgot ENGLUND, Per-Ola HAGSTRAND, Virginie ERIKSSON, Annika SMEDBERG
  • Publication number: 20210206951
    Abstract: The invention provides a polymer composition comprising a low density polyethylene (LDPE); polypropylene (PP) and a compatibiliser. The invention also relates to cables comprising said polymer composition and the use of the polymer composition in the manufacture of an insulation layer of cable.
    Type: Application
    Filed: December 18, 2018
    Publication date: July 8, 2021
    Inventors: Per-Ola HAGSTRAND, Thomas GKOURMPIS
  • Publication number: 20210163638
    Abstract: The invention relates to a polyethylene having a melt flow rate at (2.16) kg loading (MFR2), determined according to method ISO1133-1:2011, which MFR2 is A g/10 min and A1?A?A2; wherein A1 is (0.5) and A2 is (1.70), and containing a total amount of vinyl groups which is B vinyl groups per (1000) carbon atoms, and B1?B, wherein B1 is (0.45), determined according to method ASTM D6248-98, a polymer composition, an article being e.g. a cable, e.g. a power cable, and processes for producing a polyethylene, a polymer composition and an article, and an article; useful in different end applications, such as wire and cable (W&C) applications.
    Type: Application
    Filed: December 18, 2018
    Publication date: June 3, 2021
    Inventors: Annika SMEDBERG, Emil HJÄRTFORS, Villgot ENGLUND, Per-Ola HAGSTRAND, Bernt-Åke SULTAN, Thomas HJERTBERG
  • Patent number: 11011287
    Abstract: A transmission cable includes a conductor or a bundle of conductors extending along a longitudinal axis, which is circumferentially covered by an insulation layer having an extruded insulation material, whereby the transmission cable passes the electrical type test as specified in Cigré TB496, whereby the rated voltage U0 is 450 kV or more. The type test includes subjecting the power cable to a DC voltage of 1.85*U0 during 10 to 15 cycles at negative polarity, followed by a polarity reversal with another 10 to 15 cycles at positive polarity at a DC voltage of 1.85*U0, followed by additional 2 to 5 cycles during at least 4 to 10 days at positive polarity, and wherein U0 is 450 kV, or 525 kV, or more.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: May 18, 2021
    Assignee: Borealis AG
    Inventors: Peter Sunnegårdh, Marc Jeroense, Anders Gustafsson, Pär Lilja, Per-Ola Hagstrand, Villgot Englund, Annika Smedberg, Ulf Nilsson, Johan Andersson, Virginie Eriksson, Jonas Jungqvist, Jonny Brun
  • Publication number: 20210122903
    Abstract: The invention relates to polymer composition comprising a polyolefin (a) and an inorganic filler (b) wherein the polyolefin (a) is obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (a) from the unreacted products and recovering the separated polyolefin (a) in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil, power cable, for example a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
    Type: Application
    Filed: November 2, 2020
    Publication date: April 29, 2021
    Inventors: Villgot ENGLUND, Per-Ola HAGSTRAND, Annika SMEDBERG, Ulf NILSSON
  • Patent number: 10943710
    Abstract: The invention relates to power cable polymer composition which comprises a thermoplastic polyethylene having a chlorine content which is less than X, wherein X is 10 ppm, a power cable, for example, a high voltage direct current (HV DC), a power cable polymer insulation, use of a polymer composition for producing a layer of a power cable, and a process for producing a power cable.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: March 9, 2021
    Assignee: Borealis AG
    Inventors: Villgot Englund, Per-Ola Hagstrand, Virginie Eriksson, Annika Smedberg
  • Patent number: 10934420
    Abstract: The invention relates to a polymer composition comprising polyolefin (a), which is other than low density polyethylene (LDPE), and polyolefin (b), which is an LDPE polymer and obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (b) from the unreacted products and recovering the separated polyolefin in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil; a power cable, e.g. of a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: March 2, 2021
    Assignee: BOREALIS AG
    Inventors: Villgot Englund, Per-Ola Hagstrand, Annika Smedberg, Ulf Nilsson
  • Publication number: 20210027912
    Abstract: The invention relates to a use of a polymer composition with improved DC electrical properties in a power cable layer and to a cable surrounded by at least one layer comprising the polymer composition.
    Type: Application
    Filed: September 3, 2020
    Publication date: January 28, 2021
    Inventors: Villgot ENGLUND, Per-Ola Hagstrand, Ulf Nilsson, Annika Smedberg, Jan-Ove Bostrom, Andreas Farkas, Gustavo Dominguez
  • Patent number: 10886034
    Abstract: A cable having one or more conductors surrounded by at least an inner semiconductive layer, an insulation layer and an outer semiconductive layer, in that order. The insulation layer has at least 90 wt % of a polymer composition, said polymer composition having 80.0 to 99.9 wt % of an LDPE homopolymer or copolymer; and 0.1 to 20.0 wt % of: an ultra-high molecular weight polyethylene having a Mw of at least 1,000,000; or a single site catalysed medium density polyethylene (MDPE) having a density of 925 to 940 kg/m3 or a single site catalysed linear low density polyethylene (LLDPE) having a density of 910 to 925 kg/m3.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: January 5, 2021
    Assignee: Borealis AG
    Inventors: Per-Ola Hagstrand, Villgot Englund, Johan Andersson, Virginie Eriksson, Annika Smedberg, Ulf Nilsson, Karl Nielsen, Thomas Gkourmpis, Antonios Gitsas, Mattias Andersson, Christian Müller
  • Patent number: 10822478
    Abstract: The invention relates to a polymer composition comprising polyolefin (a), which is other than low density polyethylene (LDPE), and polyolefin (b), which is an LDPE polymer and obtainable by a high pressure process which process comprises the steps: (i) compressing one or more monomer(s) under pressure in a compressor, using a compressor lubricant for lubrication, (ii) polymerising a monomer optionally together with one or more comonomer(s) in a polymerisation zone, (iii) separating the obtained polyolefin (b) from the unreacted products and recovering the separated polyolefin in a recovery zone, wherein in step (i) the compressor lubricant comprises a non-mineral oil; a power cable, e.g. of a direct current (DC) power cable, use of a polymer composition and a process for producing a DC power cable.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 3, 2020
    Assignee: Borealis AG
    Inventors: Villgot Englund, Per-Ola Hagstrand, Annika Smedberg, Ulf Nilsson
  • Patent number: 10811164
    Abstract: The invention relates to a use of a polymer composition with improved DC electrical properties in a power cable layer and to a cable surrounded by at least one layer comprising the polymer composition.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: October 20, 2020
    Assignee: BOREALIS AG
    Inventors: Villgot Englund, Per-Ola Hagstrand, Ulf Nilsson, Annika Smedberg, Jan-Ove Boström, Andreas Farkas, Gustavo Dominguez