Patents by Inventor Leif Leidén
Leif Leidén 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: 9616462Abstract: The present invention relates to a method of joining polymer coated steel pipes comprising the steps of—providing polymer coated pipe segments with an uncoated length on both ends of the segments; —welding the polymer coated pipe segments together; —applying a curable polymer (A) onto the uncoated length of the welded pipe segments to form an first coating layer; and—applying a polymer composition (B) onto the first coating layer to form a topcoat layer with a thickness of 0.5 to 10 mm, wherein the polymer composition (B) has a melt flow rate MFR2 of 1.0 to 6.0 g/10 min, determined according to ISO 1133 at a temperature of 190° C. under a load of 2.Type: GrantFiled: June 1, 2012Date of Patent: April 11, 2017Assignee: Borealis AGInventors: Leif Leiden, Jouni Purmonen
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Patent number: 9598566Abstract: Heterophasic polypropylene composition having an MFR2 (2.16 kg, 230° C.) of 3.0 to 7.0 g/10 min, determined according to ISO 1 133, and a Vicat A50 softening temperature of more than 110° C. measured according to DIN EN ISO 306 at 10 N on an injection molded test specimen with the dimensions of 80×10×4 mm3 and a heat rate of 50° C./h including a propylene random copolymer matrix phase (A), and an ethylene-propylene copolymer rubber phase (B) dispersed within the matrix phase, wherein the heterophasic polypropylene composition has a fraction soluble in p-xylene at 23° C. (XCS fraction), and a fraction insoluble in p-xylene at 23° C. (XCU fraction), said heterophasic polypropylene composition having a tensile modulus of 450 to 850 MPa when measured according to ISO 527-2 at 23° C. temperature with an elongation rate of 1 mm/min on injection molded test specimens type 1A prepared according to ISO 1873-2; and a normalized maleic anhydride index IMA equal to or less than 0.036 ?m?1.Type: GrantFiled: December 18, 2014Date of Patent: March 21, 2017Assignee: BOREALIS AGInventors: Jouni Purmonen, Leif Leiden, Norbert Jansen, Tua Sundholm
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Patent number: 9550210Abstract: The present publication discloses a method for coating pipes. The method comprises applying curable first polymer (e.g. epoxy) onto the surface of the pipe and partially curing the first polymer or leaving the first polymer uncured to in order to form a reactive first polymer layer. Thereafter, the pipe with the reactive first polymer layer is heated and a second polymer (e.g. polyolefin) is applied directly onto the heated reactive first polymer layer, whereby the two polymers react and form a protective coating on the pipe or pipe section. In particular, the heating can be carried out in two steps such that the first polymer stays reactive until the application of the second polymer.Type: GrantFiled: September 16, 2010Date of Patent: January 24, 2017Assignees: BOREALIS AG, UPONOR INFRA OYInventors: Leif Leiden, Jouni Purmonen, Sven Sjoberg
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Publication number: 20160280900Abstract: Heterophasic polypropylene composition having an MFR2 (2.16 kg, 230° C.) of 3.0 to 7.0 g/10 min, determined according to ISO 1 133, and a Vicat A50 softening temperature of more than 110° C. measured according to DIN EN ISO 306 at 10 N on an injection moulded test specimen with the dimensions of 80×10×4 mm3 and a heat rate of 50° C./h including a propylene random copolymer matrix phase (A), and an ethylene-propylene copolymer rubber phase (B) dispersed within the matrix phase, wherein the heterophasic polypropylene composition has a fraction soluble in p-xylene at 23° C. (XCS fraction), and a fraction insoluble in p-xylene at 23° C. (XCU fraction), said heterophasic polypropylene composition having a tensile modulus of 450 to 850 MPa when measured according to ISO 527-2 at 23° C. temperature with an elongation rate of 1 mm/min on injection moulded test specimens type 1A prepared according to ISO 1873-2; and a normalized maleic anhydride index IMA equal to or less than 0.036 ?m?1.Type: ApplicationFiled: December 18, 2014Publication date: September 29, 2016Inventors: Jouni PURMONEN, Leif LEIDEN, Norbert JANSEN, Tua SUNDHOLM
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Patent number: 9453598Abstract: The present invention relates to a structure comprising (i) a layer or profile (A) composed of a first material, and (ii) a polyolefin layer or profile (B) adjacent to layer or profile (A) which is composed of a composition comprising a base resin comprising a polyolefin, characterized in that the surface of any or both of layer or profile (A) and layer or profile (B) has/have been treated with a composition comprising an organosilicon compound before (A) and (B) are brought adjacent to each other, to a process for the production of such a structure, to an article, in particular a coated pipe, comprising such a structure and to the use of a composition comprising an organosilicon compound as an adhesion promoter in such a structure.Type: GrantFiled: May 24, 2007Date of Patent: September 27, 2016Assignee: Borealis Technology OyInventors: Leif Leiden, Jouni Purmonen, Anders Leiden, Kauno Alastalo
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Patent number: 9186838Abstract: The invention relates to an apparatus and method for coating a pipe or a section of a pipe with a polymer layer. The apparatus comprises an applicator for applying polymer melt on the surface of a pipe or pipe section, a roller for pressing the polymer applied by the applicator towards the pipe or pipe section, and means for circumferentially moving the applicator and the roller around the periphery of the pipe or pipe section. According to the invention the apparatus further comprises a drive for rotating the roller as the roller is moving around the periphery of a pipe or pipe section. By means of the invention, higher quality coatings can be applied to field joints of steel pipes, for example.Type: GrantFiled: September 16, 2010Date of Patent: November 17, 2015Assignees: OY KWH PIPE AB, BOREALIS AHInventors: Leif Leiden, Jouni Purmonen, Sven Sjoberg
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Patent number: 8932681Abstract: Method and apparatus for coating a pipe or a pipe section with a layer of at least one polymer. The method includes providing the pipe or the pipe section having an outer surface defining the periphery of the pipe or the pipe section; applying on the outer surface of the pipe or pipe section a layer of at least one polymer material in melt stage using a nozzle, which is mounted on a carriage capable of travelling along the periphery of the pipe or the pipe section; and moving the carriage along at least a part of the periphery during the application of the polymer material to form a layer on the surface of the pipe or the pipe section that is particularly useful for coating field joints in pipelines.Type: GrantFiled: March 18, 2013Date of Patent: January 13, 2015Assignees: Uponor Infra Oy, Borealis Technology OyInventors: Leif Leiden, Sven Sjoberg, Rauno Smatt
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Patent number: 8911840Abstract: The invention relates to a coated pipe comprising a core, an adhesion layer coated on the core and an outer coating layer coated on the adhesion layer, wherein at least the adhesion layer comprises a propylene polymer composition comprising: (A) a propylene homo- or copolymer, and (B) an elastomeric component and to the use of such a propylene polymer composition for coating a pipe.Type: GrantFiled: January 27, 2009Date of Patent: December 16, 2014Assignee: Borealis Technology OyInventors: Leif Leiden, Jouni Purmonen, Kauno Alastalo
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Patent number: 8912276Abstract: Coating composition comprising an ethylene copolymer containing not more than 5 mole-% comonomer, whereby the fraction of the ethylene copolymer having a molecular weight of 300 000 g/mol-600 000 g/mol has a methyl branching of more than 4.0 Methyl per 1000 C as determined by SEC/FT-IR analysis.Type: GrantFiled: May 4, 2012Date of Patent: December 16, 2014Assignee: Borealis AGInventors: Tuomas Noopila, Erik Eriksson, Magnus Palmlöf, Jari Hätönen, Michiel Bergstra, Leif Leiden, Martin Anker, Siw Bodil Fredriksen
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Publication number: 20140312100Abstract: The present invention relates to a method of joining polymer coated steel pipes comprising the steps of providing polymer coated pipe segments with an uncoated length on both ends of the segments; welding the polymer coated pipe segments together; applying a curable polymer (A) onto the uncoated length of the welded pipe segments to form an first coating layer; and applying a polymer composition (B) onto the first coating layer to form a topcoat layer with a thickness of 0.5 to 10 mm, wherein the polymer composition (B) has a melt flow rate MFR2 of 1.0 to 6.0 g/10 min, determined according to ISO 1133 at a temperature of 190° C. under a load of 2.Type: ApplicationFiled: June 1, 2012Publication date: October 23, 2014Applicant: BOREALIS AGInventors: Leif Leiden, Jouni Purmonen
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Publication number: 20140069547Abstract: Coating composition comprising an ethylene copolymer containing not more than 5 mole-% comonomer, whereby the fraction of the ethylene copolymer having a molecular weight of 300 000 g/mol-600 000 g/mol has a methyl branching of more than 4.0 Methyl per 1000 C as determined by SEC/FT-IR analysis.Type: ApplicationFiled: May 4, 2012Publication date: March 13, 2014Applicant: BOREALIS AGInventors: Tuomas Noopila, Erik Eriksson, Magnus Palmlöf, Jari Häönen, Michiel Bergstra, Leif Leiden, Martin Anker, Siw Bodil Fredriksen
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Patent number: 8623482Abstract: The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m to 955 kg/m3.Type: GrantFiled: December 9, 2008Date of Patent: January 7, 2014Assignee: Borealis Technology OyInventors: Martin Anker, Siw Bodil Fredriksen, Pal Christian Bentzrod, Mats Backman, Leif Leiden, Markku Vahteri, Petri Rekonen
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Patent number: 8481638Abstract: The present invention relates to an adhesive composition providing high peel strength in particular at high temperatures, an article comprising a layer of the adhesive and the use of the adhesive.Type: GrantFiled: October 12, 2007Date of Patent: July 9, 2013Assignee: Borealis Technology OyInventors: Martin Anker, Leif Leiden, Kauno Alastalo
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Patent number: 8474401Abstract: Method and apparatus for coating a pipe or a pipe section with a layer of at least one polymer. The method includes providing the pipe or the pipe section having an outer surface defining the periphery of the pipe or the pipe section; applying on the outer surface of the pipe or pipe section a layer of at least one polymer material in melt stage using a nozzle, which is mounted on a carriage capable of travelling along the periphery of the pipe or the pipe section; and moving the carriage along at least a part of the periphery during the application of the polymer material to form a layer on the surface of the pipe or the pipe section that is particularly useful for coating field joints in pipelines.Type: GrantFiled: April 24, 2008Date of Patent: July 2, 2013Assignees: Oy KWH Pipe AB, Borealis Technology OyInventors: Leif Leidén, Sven Sjöberg, Rauno Smått
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Patent number: 8361578Abstract: Coated pipes have a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol, the ratio of the weight average molecular weight to the number average molecular weight, Mw/Mn, of from 15 to 50, a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 930 kg/m3 to 955 kg/m3.Type: GrantFiled: December 8, 2008Date of Patent: January 29, 2013Assignee: Borealis Technology OYInventors: Mats Backman, Martin Anker, Siw Bodil Fredriksen, Leif Leiden, Markku Vahteri, Petri Rekonen
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Publication number: 20120231160Abstract: The present publication discloses a method for coating pipes. The method comprises applying curable first polymer (e.g. epoxy) onto the surface of the pipe and partially curing the first polymer or leaving the first polymer uncured to in order to form a reactive first polymer layer. Thereafter, the pipe with the reactive first polymer layer is heated and a second polymer (e.g. polyolefin) is applied directly onto the heated reactive first polymer layer, whereby the two polymers react and form a protective coating on the pipe or pipe section. In particular, the heating can be carried out in two steps such that the first polymer stays reactive until the application of the second polymer.Type: ApplicationFiled: September 16, 2010Publication date: September 13, 2012Applicants: OY KWH PIPE AB, BOREALIS AGInventors: Leif Leiden, Jouni Purmonen, Sven Sjorberg
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Publication number: 20120231168Abstract: The invention relates to an apparatus and method for coating a pipe or a section of a pipe with a polymer layer. The apparatus comprises an applicator for applying polymer melt on the surface of a pipe or pipe section, a roller for pressing the polymer applied by the applicator towards the pipe or pipe section, and means for circumferentially moving the applicator and the roller around the periphery of the pipe or pipe section. According to the invention the apparatus further comprises a drive for rotating the roller as the roller is moving around the periphery of a pipe or pipe section. By means of the invention, higher quality coatings can be applied to field joints of steel pipes, for example.Type: ApplicationFiled: September 16, 2010Publication date: September 13, 2012Applicants: BOREALIS AG, OY KWH PIPE ABInventors: Leif Leiden, Jouni Purmonen, Sven Sjoberg
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Patent number: 8142871Abstract: The present invention deals with coated pipes having a layer of multimodal polyethylene. The multimodal ethylene copolymer is a copolymer of ethylene with one or more alpha-olefin comonomers having from 4 to 10 carbon atoms and has a weight average molecular weight of from 70000 g/mol to 250000 g/mol and a melt index MFR2 of from 0.05 g/10 min to 5 g/10 min, a melt index MFR5 of from 0.5 to 10 g/10 min and a density of from 945 kg/m3 to 958 kg/m3. The coatings have a high stiffness, good properties at elevated temperatures and acceptable stress-cracking properties.Type: GrantFiled: December 10, 2008Date of Patent: March 27, 2012Assignee: Borealis Technology OYInventors: Martin Anker, Siw Bodil Fredriksen, Pal Christian Bentzrod, Mats Bäckman, Leif Leiden, Markku Vahteri, Petri Rekonen
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Publication number: 20110248072Abstract: Method and apparatus for coating a pipe (2) or a pipe section with a layer of at least one polymer. The method comprises providing a pipe (2) or a pipe section having an outer surface defining the periphery of the pipe or pipe section; applying on the outer surface of the pipe or pipe section a layer of at least one polymer material in melt stage using a nozzle (3), which is mounted on a carriage capable of travelling along the periphery of the pipe (2) or pipe section; and moving the carriage along at least a part of the periphery during the application of the polymer material to form a layer on the surface of the pipe (2) or pipe section. The outer surface of the pipe or pipe section is being locally heated by induction heating before the application of the polymer material onto said surface. The present invention is particularly useful for coating field joints in pipelines.Type: ApplicationFiled: October 23, 2009Publication date: October 13, 2011Applicants: BOREALIS AG, OY KWH PIPE ABInventors: Leif Leidén, Sven Sjöberg, Rauno Smått
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Publication number: 20110217497Abstract: The present invention relates to a structure comprising (i) a layer or profile (A) composed of a first material, and (ii) a polyolefin layer or profile (B) adjacent to layer or profile (A) which is composed of a composition comprising a base resin comprising a polyolefin, characterized in that the surface of any or both of layer or profile (A) and layer or profile (B) has/have been treated with a composition comprising an organosilicon compound before (A) and (B) are brought adjacent to each other, to a process for the production of such a structure, to an article, in particular a coated pipe, comprising such a structure and to the use of a composition comprising an organosilicon compound as an adhesion promoter in such a structure.Type: ApplicationFiled: May 24, 2007Publication date: September 8, 2011Inventors: Leif Leiden, Jouni Purmonen, Anders Leiden, Kauno Alastalo