Patents by Inventor Markku Vahteri
Markku Vahteri 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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Publication number: 20110268902Abstract: A multimodal ethylene polymer with a density of less than 950 kg/m3 obtained by polymerization with a single-site catalyst and having an MFR21 in the range of 2 to 15, a shear thinning index SHI2.7/210 of between 5 and 10.Type: ApplicationFiled: October 30, 2009Publication date: November 3, 2011Inventors: Anneli Pakkanen, Markku Vahteri, Magnus Palmlof, Jeroen Oderkerk
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Publication number: 20110262670Abstract: An ethylene polymer with a density of less than 955 kg/m3 obtained by polymerisation with a single-site catalyst and having a shear thinning index SHI2.7/210 of less than 5 wherein ethylene polymer comprises two components.Type: ApplicationFiled: October 30, 2009Publication date: October 27, 2011Applicant: Borealis AGInventors: Esa Kokko, Anneli Pakkanen, Markku Vahteri, Magnus Palmlof, Jeroen Oderkerk
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Publication number: 20110262671Abstract: A multimodal ethylene polymer with a density of less than 950 kg/m3 obtained by polymerization with a single-site catalyst and having an MFR21 in the range of 10 to 20 g/10 min; a shear thinning index SHI2.7/210 of at least 4; and preferably a crosslinkability of at least 60%.Type: ApplicationFiled: October 30, 2009Publication date: October 27, 2011Applicant: Borealis AGInventors: Anneli Pakkanen, Markku Vahteri, Magnus Palmlof, Jeroen Oderkerk
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Publication number: 20110120587Abstract: 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: ApplicationFiled: December 9, 2008Publication date: May 26, 2011Applicant: BOREALIS TECHNOLOGY OYInventors: Martin Anker, Siw Bodil Fredriksen, Pal Christian Bentzrod, Mats Backman, Leif Leiden, Markku Vahteri, Petri Rekonen
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Publication number: 20110028665Abstract: 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: ApplicationFiled: December 5, 2008Publication date: February 3, 2011Applicant: BOREALIS TECHNOLOGY OYInventors: Virginie Eriksson, Markku Vahteri, Marjo Vaananen, Thomas Garoff, Jari Hatonen, Petri Rekonen, Siw Bodil Fredriksen, Katrin Nord-Varhaug, Marit Seim, Jorunn Nilsen, Irene Helland
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Publication number: 20100313986Abstract: 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/m3 to 955 kg/m3. The pipes can be coated with high throughput and good production economy. The coatings have good mechanical properties.Type: ApplicationFiled: December 8, 2008Publication date: December 16, 2010Inventors: Mats Backman, Martin Anker, Siw Bodil Fredriksen, Leif Leiden, Markku Vahteri, Petri Rekonen
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Publication number: 20100279047Abstract: 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: ApplicationFiled: December 10, 2008Publication date: November 4, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Martin Anker, Siw Bodil Fredriksen, Pal Christian Bentzrod, Mats Bäckman, Leif Leiden, Markku Vahteri, Petri Rekonen
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Patent number: 7737222Abstract: A pressureless pipe and polymer composition for making such a pipe as well as the use of the polymer composition for pressureless pipes and supplementary parts, are disclosed. The polymer composition is characterized in that the polymer comprises a multimodal ethylene polymer including a copolymer of ethylene and a C4-C10 &agr; -olefin comonomer; the ethylene polymer has a total density of 953-958 kg/m3 and a MFR5 of 0.2-2.0 g/10 min; the ethylene polymer has a modulus of elasticity, determined according to ISO 178 of 1300-1700 MPa; the ethylene polymer has a resistance to slow crack growth, determined according to ASTM F 1473 of more than 1.5 hrs.Type: GrantFiled: March 31, 2005Date of Patent: June 15, 2010Assignee: Borealis Technology OyInventors: Mats Bäckman, May-Lis Andersson, Carl-Gustaf Ek, Kenneth Lund, Markku Vahteri
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Publication number: 20100055366Abstract: The present invention relates to a pipe made of a polyethylene composition comprising a polyethylene base resin, which comprises c. an ethylene copolymer as fraction (A), and d. an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein the polyethylene base resin is obtainable in a polymerisation process in which a single-site catalyst (SSC) is used in the polymerisation of at least one of fractions (A) and (B), the base resin having (i) a density of below 940 kg/m, and (ii) a MFR5 at 190° C./5.00 kg of at least 0.20 g/10 min, and the polyethylene composition having a time to failure of at least 250 h measured according to ISO 1167 at 95° C. and 4.3 MPa.Type: ApplicationFiled: November 21, 2007Publication date: March 4, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Magnus Palmlöf, Solveig Johansson, Markku Vähteri
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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: 7524897Abstract: A film with a broad molecular weight distribution, excellent impact strength and a high dart drop value or moderate dart drop value accompanied by good optical property consisting of a bimodal terpolymer comprising a low molecular weight homopolymer of ethylene and a high molecular weight terpolymer of ethylene, 1-butene and a C6 to C12 alpha-olefin, or a bimodal terpolymer comprising a low mo-lecular weight polymer which is a binary copolymer of ethylene and a C4 to C12 alpha-olefin and a high molecular weight polymer which is either a binary copolymer of ethylene and 1-butene, if the low molecular weight polymer is a binary co-polymer of ethylene and a C6 to C12 alpha-olefin, or a terpolymer of ethylene, 1 -butene and a C6 to C12 alpha-olefin.Type: GrantFiled: February 3, 2003Date of Patent: April 28, 2009Assignee: Borealis Technology OyInventors: Jari {umlaut over ( )}Äärilä, Marja Ora, Tuula Sivonen, Markku Vahteri
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Publication number: 20080139749Abstract: A multimodal copolymer of ethylene comprising at least (i) a lower molecular weight fraction of a copolymer of ethylene and at least one alpha-olefin comonomer and (ii) a higher molecular weight fraction of a copolymer of ethylene and at least one alpha-olefin comonomer, wherein said copolymer has a density below 920 kg/m3.Type: ApplicationFiled: December 22, 2005Publication date: June 12, 2008Applicant: Borealis Technology OyInventors: Arja Lehtinen, Merete Skar, Jarmo Lindroos, Janne Maaranen, Markku Vahteri, Hans Eklind, Holger Poehler, Alexander Krajete
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Publication number: 20070207281Abstract: A pressureless pipe and polymer composition for making such a pipe as well as the use of the polymer composition for pressureless pipes and supplementary parts, are disclosed. The polymer composition is characterised in that the polymer comprises a multimodal ethylene polymer including a copolymer of ethylene and a C4-C10 &agr; -olefin comonomer; the ethylene polymer has a total density of 953-958 kg/m3 and a MFR5 of 0.2-2.0 g/10 min; the ethylene polymer has a modulus of elasticity, determined according to ISO 178 of 1300-1700 MPa; the ethylene polymer has a resistance to slow crack growth, determined according to ASTM F 1473 of more than 1.5 hrs.Type: ApplicationFiled: March 31, 2005Publication date: September 6, 2007Applicant: BOREALIS TECHNOLOGY OYInventors: Mats Backman, May-Lis Andersson, Carl-Gustaf Ek, Kenneth Lund, Markku Vahteri
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Patent number: 7256239Abstract: A film of a polyethylene produced by polymerization catalysed by a single site catalyst and comprising as comonomers to ethylene at least two C4-12 alpha olefins, preferably but-1-ene and hex-1-ene.Type: GrantFiled: February 4, 2003Date of Patent: August 14, 2007Assignee: Borealis Technology OyInventors: Irene Helland, Merete Skar, Jani Äärilä, Marja Ora, Markku Vahteri
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Publication number: 20060167192Abstract: 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 copolymerising 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 polymerisation 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: ApplicationFiled: June 19, 2003Publication date: July 27, 2006Inventors: Jari Aarila, Irene Helland, Ole Myhre, Jorunn Nilsen, Markku Vahteri
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Publication number: 20050131187Abstract: A film of a polyethylene produced by polymerization catalysed by a single site catalyst and comprising as comonomers to ethylene at least two C4-12 alpha olefins, preferably but-1-ene and hex-1-ene.Type: ApplicationFiled: February 4, 2003Publication date: June 16, 2005Inventors: Irene Helland, Merete Skar, Jani Aarila, Marja Ora, Markku Vahteri
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Publication number: 20050119407Abstract: A film with a broad molecular weight distribution, excellent impact strength and a high dart drop value or moderate dart drop value accompanied by good optical property consisting of a bimodal terpolymer comprising a low molecular weight homopolymer of ethylene and a high molecular weight terpolymer of ethylene, 1-butene and a C6 to C12 alpha-olefin, or a bimodal terpolymer comprising a low mo-lecular weight polymer which is a binary copolymer of ethylene and a C4 to C12 alpha-olefin and a high molecular weight polymer which is either a binary copolymer of ethylene and 1-butene, if the low molecular weight polymer is a binary co-polymer of ethylene and a C6 to C12 alpha-olefin, or a terpolymer of ethylene, 1-butene and a C6 to C12 alpha-olefin.Type: ApplicationFiled: February 3, 2003Publication date: June 2, 2005Inventors: Jari Aarila, Marja Ora, Tuula Sivonen, Markku Vahteri