Patents by Inventor Ole Jan Myhre
Ole Jan Myhre 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).
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Patent number: 10184043Abstract: The present invention relates to a blown film made of a composition comprising a) a propylene heterophasic copolymer (A) with a matrix propylene polymer and an ethylene-propylene-rubber characterized in that the film has been monoaxially oriented in the machine direction with a stretch ratio of 1:1.1 to 1:10, to a process for making such a film, to the use of said composition in making such a film, and to an article comprising such a film.Type: GrantFiled: December 11, 2006Date of Patent: January 22, 2019Assignee: BOREALIS TECHNOLOGY OYInventors: Peter Niedersuess, Manfred Kirchberger, Ole Jan Myhre
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Publication number: 20100304062Abstract: The present invention provides a uniaxially oriented multilayer film comprising at least (i) a layer (A) and (ii) a layer (B), wherein said layer (A) comprises a linear low density polyethylene (LLDPE) comprising (e.g. selected from):—a multimodal LLDPE produced using a Ziegler Natta catalyst (znLLDPE), or—a LLDPE produced using a single site catalyst (mLLDPE) or—a mixture of a mLLDPE and a multimodal znLLDPE, said layer (B) comprises a multimodal LLDPE, and said multilayer film is in the form of a stretched film which is uniaxially oriented in the machine direction (MD) in a draw ratio of at least 1:3.Type: ApplicationFiled: December 19, 2007Publication date: December 2, 2010Inventors: Hans Georg Daviknes, Ole Jan Myhre
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Publication number: 20100009156Abstract: The present invention provides a uniaxially oriented multilayer film comprising at least (i) an outer layer (B) and (ii) an inner layer (C), wherein said layer (B) (i) comprises a multimodal linear low density polyethylene (LLDPE), said layer (C) (ii) comprises at least one polymer component which has a Tm<100° C., and said multilayer film is in the form of a stretched film which is uniaxially oriented in the machine direction (MD) in a draw ratio of at least 1:3.Type: ApplicationFiled: December 19, 2007Publication date: January 14, 2010Inventors: Hans Georg Daviknes, Ole Jan Myhre
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Patent number: 7585911Abstract: Inner liners of foam insulated refrigerators and freezers are made of mineral filled bimodal polyethylene.Type: GrantFiled: December 20, 2005Date of Patent: September 8, 2009Assignee: Borealis Technology OyInventors: Werner Posch, Stefan Schiesser, Ole Jan Myhre
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Patent number: 7576166Abstract: A process for producing bimodal linear low-density polyethylene polymer compositions, useful for making films. The polymer compositions have a melt flow rate MFR2 of 0.4 to 1.0 g/10 min and a density of 918 to 925 kn/m3. The process to produce the polymer compositions involves copolymerizing ethylene with an alpha-olefin comonomer in a loop reactor to produce a low molecular weight polymer having a melt flow rate MFR2 of 50 to 500 g/10 min and a density of 945 to 953 kg/m3. The polymerization is continued in a gas phase reactor to produce a high molecular weight polymer, such that the final polymer composition has the desired properties. The final composition contains from 41 to 48% by weight of the low molecular weight polymer and from 59 to 52% by weight of the high molecular weight polymer. The resulting films have an excellent visual appearance and good mechanical properties. The compositions can easily be converted to films. The process can be operated a long time without a shutdown.Type: GrantFiled: June 19, 2003Date of Patent: August 18, 2009Assignee: Borealis Technology OyInventors: Jari Äärilä, Irene Helland, Ole Jan Myhre, Jorunn Nilsen, Markku Vahteri
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Patent number: 7517941Abstract: A shrink film comprising a polyethylene film of thickness 5 to 500 ?m, wherein the polyethylene comprises an ethylene homopolymer-copolymer mixture having a molecular weight distribution in the range of 5 to 40, and a weight average molecular weight of at least 100 kD.Type: GrantFiled: July 29, 2003Date of Patent: April 14, 2009Assignee: Borealis Technology OyInventors: Ole Jan Myhre, Merete Skar, Hans Georg Daviknes, Kjetil Larsen Borve, Geir Morten Johansen
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Patent number: 7504141Abstract: A shrink film comprising a polyethylene film, characterized in that said polyethylene is an ethylene copolymer mixture having a molecular weight distribution in the range 10 to 35, a density of 915 to 940 kg/m3, a weight average molecular weight of at least 100000 D and an MFR2.16 (190° C.) of 0.1 to 0.9 kg/m3, which copolymer mixture is produced by a two or more stage copolymerization of ethylene and 2 to 10% mole (relative to ethylene) of a C3-12 alpha-olefin comonomer in a series of reactors including at least one slurry loop reactor and at least one gas phase reactor using a heterogeneous Ziegler-Natta catalyst.Type: GrantFiled: July 29, 2003Date of Patent: March 17, 2009Assignee: Borealis Technology OyInventors: Ole Jan Myhre, Merete Skar, Hans Georg Daviknes, Kjetil Larsen Brove, Geir Morten Johansen
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Publication number: 20090004415Abstract: The present invention relates to a blown film made of a composition comprising a) a propylene heterophasic copolymer (A) with a matrix propylene polymer and an ethylene-propylene-rubber characterized in that the film has been monoaxially oriented in the machine direction with a stretch ratio of 1:1.1 to 1:10, to a process for making such a film, to the use of said composition in making such a film, and to an article comprising such a film.Type: ApplicationFiled: December 11, 2006Publication date: January 1, 2009Applicant: BOREALIS TECHNOLOGY OYInventors: Peter Niedersuess, Manfred Kirchberger, Ole Jan Myhre
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Publication number: 20080146714Abstract: Inner liners of foam insulated refrigerators and freezers are made of mineral filled bimodal polyethylene.Type: ApplicationFiled: December 20, 2005Publication date: June 19, 2008Inventors: Werner Posch, Stefan Schiesser, Ole Jan Myhre
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Patent number: 6642323Abstract: The present invention concerns a process for producing homogeneous polyethylene compositions and processes for making high density, medium density and low density films therefrom. The process comprises carrying out the polymerization in the presence of an ethylene-polymerizing catalyst system in a multistage reaction sequence of successive polymerization stages, at least one of which is a loop polymerization stage, and at least one of which is a gas phase polymerization stage. According to the invention, said loop polymerization stage is operated using a diluent selected from the group of linear and branched C4-C6 hydrocarbons and/or mixtures thereof. The reactor sequence is operated with different amounts of hydrogen and comonomers to produce a high molecular weight portion in one of the polymerization stages and a low molecular weight portion in another, so as to provide bimodal polyethylene composition with a low molecular weight part having an MFR2 of 250 g/10 min or more.Type: GrantFiled: November 8, 2000Date of Patent: November 4, 2003Assignee: Borealis Technology OyInventors: Ole Jan Myhre, Bjarne Jansen, Auli Nummila-Pakarinen, Jari Äärilä
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Patent number: 6632884Abstract: This invention concerns process for producing polyethylene compositions, films prepared thereof and process for the preparation of the films. The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR2 of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR2=0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m3. The invention makes it possible to produce polyethylene compositions for manufacturing films with a good balance between optical and mechanical properties.Type: GrantFiled: October 1, 2001Date of Patent: October 14, 2003Assignee: Borealis Technology OyInventors: Merete Skar, Ole Jan Myhre, Arja Lehtinen, Harri Hokkanen, Hilkka Knuuttila, Kalle Kallio, Esa Kinnunen, Eija Lappi
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Patent number: 6562905Abstract: The present invention concerns a bimodal film-making HDPE composition, a process for the preparation thereof, a film prepared thereof and a film-making process. The composition comprises at least one polyethylene component having a relatively low molecular weight and another polyethylene component having a relatively high molecular weight. The composition has a shear thinning index defined by the relationship: SHI5/300≦0.00014 &eegr;5kPa+78 wherein &eegr;5kPa is the complex viscosity at G*=5 Pa and SHI5/300 is the ratio of complex viscosity at G*=5 kPa to the complex viscosity at G*=300 kPa. By means of the invention it is possible to produce material for making HDPE blown films with good mechanical properties in a process where the whole range of PE products from LLD to HD can be produced.Type: GrantFiled: November 9, 2000Date of Patent: May 13, 2003Assignee: Borealis Technology OyInventors: Auli Nummila-Pakarinen, Ole Jan Myhre, Jarmo Lindroos, Solveig Johansson
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Patent number: 6552150Abstract: The present invention concerns a polyethylene composition particularly suitable for film blowing. The invention also concerns a process for the production thereof. The composition comprises a low molecular weight portion having a density of more than 960 kg/m3 and a high molecular weight portion. The polyethylene composition has a density of about 925-940 kg/m3 and a melt flow rate in the range of MFR21, from 5 to 40 g/10 min. A polyethylene film blown from the polyethylene composition exhibits a tensile strength at yield in transverse direction at least 15 MPa, a 1% secant modulus in machine direction at least 300 MPa and in transverse direction at least 400 MPa, and a dart drop of at least 5 g/&mgr;m.Type: GrantFiled: September 14, 2000Date of Patent: April 22, 2003Assignee: Borealis Technology OyInventors: Auli Nummila-Pakarinen, Ole Jan Myhre, Bjarne Jansen
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Patent number: 6455642Abstract: The present invention concerns a process for producing homogeneous polyethylene materials and processes for making high density, medium density and low density films therefrom. The process involves producing a polyethylene composition in a multistage reaction sequence of successive polymerization stages in the presence of an ethylene-polymerizing catalyst system. According to the invention, the process is carried out using an unsupported catalyst having magnesium and titanium as active constituents, in at least one loop polymerization stage and at least one gas phase polymerization stage and, operated with different amounts of hydrogen and comonomers to produce a high molecular weight portion in one of the polymerization stages and a low molecular weight portion in another so as to provide a polyethylene composition with the low molecular weight part having a MFR2 of 250 g/10 min or more. With this process it is possible to obtain homogeneous bimodal polyethylene material.Type: GrantFiled: November 7, 2000Date of Patent: September 24, 2002Assignee: Borealis Technology OyInventors: Ole Jan Myhre, Auli Nummila-Pakarinen, Jarmo Lindroos, Päivi Waldvogel, Thomas Garoff