Patents by Inventor Katrin Nord-Varhaug

Katrin Nord-Varhaug 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: 8461280
    Abstract: A multimodal linear low density polyethylene polymer having a final density of 900 to 940 kg/m3, and containing at least one ?-olefin comonomer in addition to ethylene comprising: (A) 30 to 60 wt % of a lower molecular weight component being an ethylene homopolymer or a copolymer of ethylene and at least one ?-olefin; and (B) 70 to 40 wt % of a higher molecular weight component being a copolymer of ethylene and at least one ?-olefin, said ?-olefin being the same or different from any ?-olefin used in component (A) but with the proviso that both components (A) and (B) are not polymers of ethylene and butane alone; wherein the multimodal LLDPE has a dart drop of at least 700 g; and wherein components (A) and (B) are obtainable using a Ziegler-Natta catalyst.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: June 11, 2013
    Assignee: Borealis Technology Oy
    Inventors: Virginie Eriksson, Marjo Vaananen, Markku Vahteri, Thomas Garoff, Petri Rekonen, Jari Hatonen, Siw Bodil Fredriksen, Katrin Nord-Varhaug, Marit Seim, Jorunn Nilsen, Irene Helland
  • Patent number: 8461266
    Abstract: The present invention relates to a cable comprising a conductor surrounded by one or more layers, wherein at least one layer comprises a polymer composition comprising a multimodal copolymer of ethylene with one or more comonomers, to a process for producing the cable and to a polymer composition suitable as a cable layer material.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: June 11, 2013
    Assignee: Borealis AG
    Inventors: Jonas Junqvist, Hans Eklind, Bernt-Ake Sultan, Katrin Nord-Varhaug, Philipp Walter
  • Patent number: 8044160
    Abstract: The present invention relates to a multimodal polyethylene composition wherein (i) the composition has an MFR2 of 0.1 to 100 g/10 min, (ii) the shear thinning index SHI(1,100) and the log MFR2 of the composition satisfy the following relation: SHI(1,100)??10.58 log MFR2 [g/10 min]/(g/10 min)+12.94, and (iii) the composition has an environmental stress crack resistance ESCR of 10 h or more. Furthermore, the present invention relates to a process for the production of said composition, an injection moulded article, in particular a cap or closure, comprising said composition and to the use of said composition for the production of an injection moulded article.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: October 25, 2011
    Assignee: Borealis Technology Oy
    Inventors: Katrin Nord-Varhaug, Svein Staal Eggen, Hans Joerg Fell
  • Publication number: 20110240333
    Abstract: The present invention relates to a cable comprising a conductor surrounded by one or more layers, wherein at least one layer comprises a polymer composition comprising a multimodal copolymer of ethylene with one or more comonomers, to a process for producing the cable and to a polymer composition suitable as a cable layer material.
    Type: Application
    Filed: October 12, 2009
    Publication date: October 6, 2011
    Applicant: BOREALIS AG
    Inventors: Jonas Junqvist, Hans Eklind, Bernt-Ake Sultan, Katrin Nord-Varhaug, Philipp Walter
  • Patent number: 7947783
    Abstract: The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10 min, (ii) the environmental stress crack resistance ESCR measured in hours according to ASTM 1693, condition B and E-modulus EM measured according to ISO 527-2: 1993 in MPa satisfy the following relation: ESCR>?EM h/MPa+1150 h.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: May 24, 2011
    Assignee: Borealis Technology Oy
    Inventors: Svein Eggen, Katrin Nord-Varhaug, Siw Bodil Fredriksen
  • Publication number: 20110028665
    Abstract: A multimodal linear low density polyethylene polymer having a final density of 900 to 940 kg/m3, and containing at least one ?-olefin comonomer in addition to ethylene comprising: (A) 30 to 60 wt % of a lower molecular weight component being an ethylene homopolymer or a copolymer of ethylene and at least one ?-olefin; and (B) 70 to 40 wt % of a higher molecular weight component being a copolymer of ethylene and at least one ?-olefin, said ?-olefin being the same or different from any ?-olefin used in component (A) but with the proviso that both components (A) and (B) are not polymers of ethylene and butane alone; wherein the multimodal LLDPE has a dart drop of at least 700 g; and wherein components (A) and (B) are obtainable using a Ziegler-Natta catalyst.
    Type: Application
    Filed: December 5, 2008
    Publication date: February 3, 2011
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Virginie Eriksson, Markku Vahteri, Marjo Vaananen, Thomas Garoff, Jari Hatonen, Petri Rekonen, Siw Bodil Fredriksen, Katrin Nord-Varhaug, Marit Seim, Jorunn Nilsen, Irene Helland
  • Patent number: 7875691
    Abstract: The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10 min, (ii) the environmental stress crack resistance ESCR measured according to the FNCT at 12 MPa and 23° C. in hours and the E-modulus EM measured according to ISO 527-2: 1993 satisfy the following relation: ESCR>?0.244 EM h/MPa+416 h (I).
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: January 25, 2011
    Assignee: Borealis Technology Oy
    Inventors: Eggen Svein, Katrin Nord-Varhaug, Geir Morten Johansen
  • Publication number: 20100029883
    Abstract: A multimodal medium density polyethylene polymer obtainable using single site catalysis which comprises at least: (A) a lower molecular weight (LMW) component which is a copolymer of ethylene with at least one comonomer, and (B) a higher molecular weight (HMW) component which is a copolymer of ethylene with at least one comonomer; wherein said multimodal medium density polyethylene polymer has a density of more than 925 kg/m3; and the ratio between the comonomer content in mol-% present in LMW component (A) and the total comonomer content in mol-% present in the multimodal medium density polyethylene polymer is more than 0.3.
    Type: Application
    Filed: January 24, 2008
    Publication date: February 4, 2010
    Inventors: Alexander Krajete, Tore Dreng, Katrin Nord-Varhaug
  • Publication number: 20090253863
    Abstract: The present invention relates to a multimodal polyethylene composition wherein (i) the composition has an MFR2 of 0.1 to 100 g/10 min, (ii) the shear thinning index SHI(1,100) and the log MFR2 of the composition satisfy the following relation: SHI(1,100)??10.58 log MFR2 [g/10 min]/(g/10 min)+12.94, and (iii) the composition has an environmental stress crack resistance ESCR of 10 h or more. Furthermore, the present invention relates to a process for the production of said composition, an injection moulded article, in particular a cap or closure, comprising said composition and to the use of said composition for the production of an injection moulded article.
    Type: Application
    Filed: November 2, 2005
    Publication date: October 8, 2009
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Katrin Nord-Varhaug, Svein Staal Eggen, Hans Joerg Fell
  • Publication number: 20080287608
    Abstract: The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.1 to 100 g/10 min, (ii) the shear thinning index SHI(1,100) and the log MFR2 of the composition satisfy the following relation: SHI(1,100)??5.5 log MFR2 [g/10 min]/(g/10 min)+9.66, and (iii) the composition has a Charpy impact strength (23° C.) of 3 kJ/m2 or more. Furthermore, the present invention relates to a process for the production of said polyethylene resin as well as the use of the composition for the production of an injection moulded article, in particular a transport packaging or houseware article.
    Type: Application
    Filed: November 2, 2005
    Publication date: November 20, 2008
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Katrin Nord-Varhaug, Svein Staal Eggen, Tine Rorvik
  • Publication number: 20080224354
    Abstract: The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10 min, (ii) the environmental stress crack resistance ESCR measured in hours according to ASTM 1693, condition B and E-modulus EM measured according to ISO 527-2: 1993 in MPa satisfy the following relation: ESCR>?EM h/MPa+1150 h.
    Type: Application
    Filed: October 6, 2006
    Publication date: September 18, 2008
    Inventors: Svein Eggen, Katrin Nord-Varhaug, Siw Bodil Fredriksen
  • Publication number: 20070037932
    Abstract: Use of a first polyethylene polymer having a density of at least 950 kg/m3 as a nucleating agent for a second polyethylene polymer having a density of less than 940 kg/m3.
    Type: Application
    Filed: August 3, 2004
    Publication date: February 15, 2007
    Inventors: Espen Ommundsen, Merete Skar, Katrin Nord-Varhaug
  • Publication number: 20060241256
    Abstract: The use in the manufacture of a polyethylene article of a polyethylene composition comprising 20 to 50% wt of a copolymer of ethylene and a C3-20 alpha olefin comonomer and 50 to 80% wt. Of a lower weight average molecular weight ethylene polymer, the polyethylenes of the composition together having a density of 935 to 965 kg/m3, weight average molecular weight of 60000 to 300000 g/mol, an MFR2.16 at 190° C. of 0.1 to 10 g/10 min., and a molecular weight distribution (MWD) of from 2.5 to 20, the copolymer having a comonomer content of from 0.006 to 9 mol % and a degree of branching of 0.03 to 45 branches per 1000 carbons, and the ethylene polymer having a density of 939 to 975 kg/m3 and a weight average molecular weight of 20000 to 200000 g/mol.
    Type: Application
    Filed: November 26, 2003
    Publication date: October 26, 2006
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Hege Baann, Svein Eggen, Hans Eklind, Irene Helland, Solveig Johansson, Bernt-Ake Sultan, Anneli Malmberg, Katrin Nord-Varhaug, Philipp Walter