Patents by Inventor Thomas Hjertberg

Thomas Hjertberg 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: 9505860
    Abstract: The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal, characterized in that a polyunsaturated olefin grade is used as a starting material which yields a percentage of less than 6.3% in the zero conversion test or which has a decomposition temperature as measured by DSC of 130° C. or more.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: November 29, 2016
    Assignee: Borealis AG
    Inventors: Takashi Uematsu, Thomas Hjertberg, Mattias Bergqvist, Bjorn Voigt, Bernt-Ake Sultan
  • Publication number: 20160340449
    Abstract: Disentangled high or ultrahigh molecular weight polyethylene ((U)HMWPE) being produced with a Ziegler-Natta catalyst, characterized by (i) a factor for the normalized elastic modulus G?0/G?P of less than 0.95 determined in a dynamic time sweep measurement at 180° C. with constant strain of 0.5% at fixed frequency of 10 rad/s for at least 3600 s, whereby G?0 is the elastic shear modulus measured at t0 directly after melting the sample and G?p is the maximum plateau modulus.
    Type: Application
    Filed: February 6, 2015
    Publication date: November 24, 2016
    Inventors: Thomas Hjertberg, Alexandra Romina Albunia, Yi Liu, Qizheng Dou
  • Publication number: 20160297903
    Abstract: The present invention relates to a low density polyethylene having a molecular weight distribution Mw/Mn which is greater than 15, a storage modulus G? (5 kPa) which is above 3000 and a vinylidene content which is at least 15/100k C, compositions, a process for production of the low density polyethylene, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process, an article, e.g. an extrusion article, and use in extrusion coating.
    Type: Application
    Filed: June 16, 2016
    Publication date: October 13, 2016
    Applicant: BOREALIS AG
    Inventors: Auli Nummila-Pakarinen, Bernt-Ake Sultan, Bjorn Voigt, Martin Anker, Mattias Bergqvist, Thomas Gkourmpis, Thomas Hjertberg
  • Patent number: 9390834
    Abstract: The invention relates to a polymer composition comprising a polyolefin (A) and an antioxidant. The antioxidant can be selected from a phenol which bears two substituents both containing a sulfur atom and optionally further substituent(s). The polymer composition can comprise vinyl groups/1000 carbon atoms in an amount of 0.15/1000 carbon atoms or more. The polymer composition can have improved water tree resistance properties.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: July 12, 2016
    Assignee: Borealis AG
    Inventors: Susanne M. Nilsson, Thomas Hjertberg, Annika M. Smedberg
  • Patent number: 9343198
    Abstract: This application relates to a polyolefin composition comprising a polyolefin and an aromatic compound. The polyolefin composition can be used in producing medium and high voltage cables with improved electrical breakdown strength.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: May 17, 2016
    Assignee: Borealis Technology Oy
    Inventors: Thomas Hjertberg, Villgot Englund
  • Patent number: 9255159
    Abstract: The present invention provides a process for manufacturing polyethylene-diene-copolymer conducted in a plant including at least one compressor unit, at least one preheater unit downstream of the compressor unit and at least one reactor, in particular a reactor, downstream of the compressor unit and the preheater unit. The process comprising the steps of (a) feeding a first feed stream comprising ethylene into the at least one compressor unit and subsequently into the at least one preheater unit, and (b1) feeding a second feed stream including at least one diene comonomer to the first feed stream leaving the at least preheater unit, and feeding the combined feed streams including ethylene and the at least one diene comonomer to the at least one reactor, and/or (b2) feeding a second feed stream including at least one diene comonomer to the at least one reactor at at least one location along the reactor.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: February 9, 2016
    Assignee: Borealis AG
    Inventors: Bernt-Ake Sultan, Bjoern Voigt, Perry Nylander, Thomas Hjertberg, Kristian Dahlen, Mattias Bergqvist, Martin Anker, Kjell Fossum
  • Patent number: 9221934
    Abstract: The present invention relates to a process for manufacturing polyethylene-silane-copolymer conducted in a plant including at least one compressor unit and at least one reactor downstream of the compressor unit. The process includes the steps of (a) feeding a first feed stream including ethylene into the at least one compressor unit and subsequently to the at least one reactor, and (b1) feeding a second feed stream including at least one silane comonomer to the at least one reactor as front feed and/or (b2) feeding a second feed stream including at least one silane comonomer to the at least one reactor at at least one location along the reactor.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: December 29, 2015
    Assignee: Borealis AG
    Inventors: Helmut Feichtner, Bernt-Ake Sultan, Gabriel Ruess, Bjoern Voigt, Roger Carlsson, Martin Anker, Mattias Bergqvist, Kristian Dahlen, Kjell Fossum, Thomas Hjertberg, Perry Nylander
  • Publication number: 20150284582
    Abstract: The present invention relates to a cable construction comprising one or more layer elements, which layer elements comprise a first composition, wherein the first composition comprises: 20 to 80 weight percent of a vinyl chloride resin and 1 to 40 weight percent of an epoxidized ester of fatty acids and a monomeric polyol, which epoxidized ester is a compound of formula (I) wherein the compound of formula (I) has an amount of double bonds corresponding to an Iodine value of 2 or less, a power cable, process for producing a cable construction, and a crosslinked cable construction obtainable by the process.
    Type: Application
    Filed: November 28, 2013
    Publication date: October 8, 2015
    Applicant: Borealis AG
    Inventors: Thomas Hjertberg, Martin Anker, Bernt-Ake Sultan, Patrik Alnegren, Kristian Dahlen, Perry Nylander, Ola Fagrell
  • Patent number: 9133320
    Abstract: Disclosed is a polyolefin composition comprising (i) a polyolefin (A), (ii) a benzil derivative (B) comprising the structural unit according to the following formula (I), wherein one or more of the carbon atoms in the phenyl rings to which residue R1, R2, R3, R4, R5, R6, R7, R8, R9 or R10 is attached may also be a heteroatom; R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 independently are hydrogen, or a hydrocarbyl group which may contain heteroatoms; or at least two of said R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 form a further aromatic or non-aromatic ring and such system has one to eight substituents, R1? to R8?, and n=2 to 9; with the proviso that at least one hydrocarbyl group is present.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: September 15, 2015
    Assignee: BOREALIS AG
    Inventors: Villgot Englund, Thomas Hjertberg, Mats Andersson
  • Patent number: 9133331
    Abstract: A crosslinkable polymer composition having (a) a polyolefin bearing hydrolysable silane groups and a silanol condensation catalyst compound, as well as to an article, preferably a cable, thereof. A silanol condensation catalyst compound utilized for crosslinking an article, preferably a layer of a cable.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: September 15, 2015
    Assignee: Borealis AG
    Inventors: Kristian Dahlen, Ola Fagrell, Kjell Fossum, Thomas Hjertberg, Perry Nylander, Oscar Prieto
  • Patent number: 9109064
    Abstract: The present invention relates to an ethylene homo- or copolymerization process, characterized in that an inhibitor is added to the reaction mixture or any of its components before the reaction mixture is fed to the reaction zone. The present invention further relates to the use of an inhibitor to reduce fouling in an ethylene homo- or copolymerization process.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 18, 2015
    Assignee: BOREALIS AG
    Inventors: Thomas Hjertberg, Torbjorn Magnusson, Bjorn Voigt, Mattias Bergqvist, Kenneth Johansson, Marcus Kierkegaard, Annika Smedberg
  • Publication number: 20150210785
    Abstract: The present invention relates to low density polyethylene having a melt flow rate (MFR) according to ISO 1133 (190° C., 2.16 kg) which is higher than 4.0 g/10 min, a storage modulus G?, measured at a loss modulus G? of 5 kPa, which is above 3000 Pa and a vinylidene content which is at least 24/100 k C, compositions, a process for production of the low density polyethylene, a low density polyethylene which is obtainable by the process, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process or an extrusion lamination process, an article, e.g. an extrusion article, an extrusion lamination article, film blowing article, film casting article, wire and cable extrusion article, injection moulding article, blow moulding article or pipe extrusion article, and uses of the low density polyethylene.
    Type: Application
    Filed: December 7, 2012
    Publication date: July 30, 2015
    Applicant: BOREALIS AG
    Inventors: Auli Nummila-Pakarinen, Bernt-Ake Sultan, Bjorn Voigt, Martin Anker, Mattias Bergqvist, Thomas Gkourmpis, Thomas Hjertberg, Gabriel Ruess
  • Publication number: 20150133616
    Abstract: The present invention provides a process for manufacturing polyethylene-diene-copolymer conducted in a plant including at least one compressor unit, at least one preheater unit downstream of the compressor unit and at least one reactor, in particular a reactor, downstream of the compressor unit and the preheater unit. The process comprising the steps of (a) feeding a first feed stream comprising ethylene into the at least one compressor unit and subsequently into the at least one preheater unit, and (b1) feeding a second feed stream including at least one diene comonomer to the first feed stream leaving the at least preheater unit, and feeding the combined feed streams including ethylene and the at least one diene comonomer to the at least one reactor, and/or (b2) feeding a second feed stream including at least one diene comonomer to the at least one reactor at at least one location along the reactor.
    Type: Application
    Filed: March 7, 2013
    Publication date: May 14, 2015
    Inventors: Bernt-Ake Sultan, Bjoern Voigt, Perry Nylander, Thomas Hjertberg, Kristian Dahlen, Mattias Bergqvist, Martin Anker, Kjell Fossum
  • Publication number: 20150111053
    Abstract: The present invention relates to a low density polyethylene having a molecular weight distribution Mw/Mn which is 15 or less, a storage modulus G?, measured at a loss modulus G? of 5 kPa, which is above 3000 Pa, a weight average molecular weight (Mw) which is between 192000 and 250000 g/mol and has a melt flow rate (MFR) according to ISO 1133 (190° C., 2.16 kg) which is higher than 3.0 g/10 min, compositions, a process for production of the low density polyethylene, a low density polyethylene which is obtainable by the process, a continuous ethylene polymerization method for introducing vinylidene in a low density polyethylene, a method for an extrusion coating process or a method for an extrusion lamination process, an article, e.g. an extrusion article, an extrusion lamination article, film blowing article, film casting article, wire and cable extrusion article, injection moulding article, blow moulding article or pipe extrusion article, and uses of the low density polyethylene.
    Type: Application
    Filed: December 7, 2012
    Publication date: April 23, 2015
    Inventors: Auli Nummila-Pakarinen, Bernt-Ake Sultan, Bjorn Voigt, Gabriel Ruess, Martin Anker, Mattias Bergqvist, Thomas Gkourmpis, Thomas Hjertberg
  • Publication number: 20150112032
    Abstract: The present invention relates to a process for manufacturing polyethylene-silane-copolymer conducted in a plant including at least one compressor unit and at least one reactor downstream of the compressor unit. The process includes the steps of (a) feeding a first feed stream including ethylene into the at least one compressor unit and subsequently to the at least one reactor, and (b1) feeding a second feed stream including at least one silane comonomer to the at least one reactor as front feed and/or (b2) feeding a second feed stream including at least one silane comonomer to the at least one reactor at at least one location along the reactor.
    Type: Application
    Filed: March 7, 2013
    Publication date: April 23, 2015
    Inventors: Helmut Feichtner, Bernt-Ake Sultan, Gabriel Ruess, Bjoern Voigt, Roger Carlsson, Martin Anker, Mattias Bergqvist, Kristian Dahlen, Kjell Fossum, Thomas Hjertberg, Perry Nylander
  • Publication number: 20150090671
    Abstract: The present invention relates to the use of an acid scavenger to increase the resistance of a polyolefin composition against disinfectant containing water. The present invention further relates to a method for transporting water containing a disinfectant comprising the step of conveying the water through a pipe comprising a polyolefin composition, the polyolefin composition comprising an acid scavenger.
    Type: Application
    Filed: June 10, 2013
    Publication date: April 2, 2015
    Applicant: Borealis AG
    Inventors: Thomas Hjertberg, Jeroen Oderkerk, Francis Costa, Anh Tuan Tran
  • Publication number: 20150073104
    Abstract: The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal, characterized in that a polyunsaturated olefin grade is used as a starting material which yields a percentage of less than 6.3% in the zero conversion test or which has a decomposition temperature as measured by DSC of 130° C. or more.
    Type: Application
    Filed: March 12, 2013
    Publication date: March 12, 2015
    Applicant: BOREALIS AG
    Inventors: Takashi Uematsu, Thomas Hjertberg, Mattias Bergqvist, Bjorn Voigt, Bernt-Ake Sultan
  • Publication number: 20150038655
    Abstract: The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal; and/or an alpha-omega-divinylsiloxane according to Formula (I) wherein R1 and R2, which can be alike or different, are selected among alkyl groups having 1-4 carbon atoms and alkoxy groups having 1-4 carbon atoms, and n is 1-200, characterized in that the maximum temperature of the reaction mixture prior to introduction into the reaction zone is 160° C. or less.
    Type: Application
    Filed: January 7, 2013
    Publication date: February 5, 2015
    Applicant: BOREALIS AG
    Inventors: Torbjorn Magnusson, Thomas Hjertberg, Mattias Bergqvist, Kenneth Johansson, Bjorn Voigt
  • Publication number: 20150031843
    Abstract: The present invention relates to an ethylene homo- or copolymerization process, characterized in that an inhibitor is added to the reaction mixture or any of its components before the reaction mixture is fed to the reaction zone. The present invention further relates to the use of an inhibitor to reduce fouling in an ethylene homo- or copolymerization process.
    Type: Application
    Filed: March 12, 2013
    Publication date: January 29, 2015
    Inventors: Thomas Hjertberg, Torbjorn Magnusson, Bjorn Voigt, Mattias Bergqvist, Kenneth Johansson, Marcus Kierkegaard, Annika Smedberg
  • Publication number: 20140295186
    Abstract: The invention relates to a cable comprising a conductor surrounded by at least one crosslinkable layer comprising a polymer composition which comprises (a) a polyolefin bearing hydrolysable silane groups and a silanol condensation catalyst compound, as well as to a production process of such cable.
    Type: Application
    Filed: August 24, 2012
    Publication date: October 2, 2014
    Applicant: BOREALIS AG
    Inventors: Kjell Fossum, Martin Anker, Mattias Bergqvist, Kristian Dahlen, Thomas Hjertberg, Perry Nylander, Ola Fagrell