Patents by Inventor Esa Kokko
Esa Kokko 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: 11965052Abstract: A process for the preparation of an ultra-high molecular weight ethylene homopolymer having a MFR21 of 0.01 g/10 min or less, said process comprising: (I) prepolymerising at least ethylene at a temperature of 0 to 90° C. in the presence of a heterogeneous Ziegler Natta catalyst to prepare an ethylene prepolymer having an Mw of 40,000 to 600,000 g/mol; and thereafter in the presence of the prepolymer and said catalyst; (II) polymerising ethylene at a temperature of 55° C. or less, such as 20 to 55° C., to prepare said UHMW ethylene homopolymer; wherein the UHMW ethylene homopolymer comprises up to 8 wt. % of said prepolymer.Type: GrantFiled: February 17, 2023Date of Patent: April 23, 2024Assignee: Borealis AGInventors: Irfan Saeed, Esa Kokko, Mika Salo, Sanjay Rastogi, Dario Romano, Sara Ronca
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Publication number: 20240010765Abstract: Loop-Loop-gas-phase reactor polypropylene plant and process for producing polypropylene and polypropylene copolymers.Type: ApplicationFiled: November 22, 2021Publication date: January 11, 2024Inventors: Michiel Bergstra, Klaus Nyfors, Claus Molin, Esa Kokko
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Publication number: 20230322969Abstract: A process for the preparation of an ultra-high molecular weight ethylene homopolymer having a MFR21 of 0.01 g/10 min or less, said process comprising: (I) prepolymerising at least ethylene at a temperature of 0 to 90° C. in the presence of a heterogeneous Ziegler Natta catalyst to prepare an ethylene prepolymer having an Mw of 40,000 to 600,000 g/mol; and thereafter in the presence of the prepolymer and said catalyst; (II) polymerising ethylene at a temperature of 55° C. or less, such as 20 to 55° C., to prepare said UHMW ethylene homopolymer; wherein the UHMW ethylene homopolymer comprises up to 8 wt.% of said prepolymer.Type: ApplicationFiled: February 17, 2023Publication date: October 12, 2023Inventors: Irfan SAEED, Esa KOKKO, Mika SALO, Sanjay RASTOGI, Dario ROMANO, Sara RONCA
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Patent number: 11680114Abstract: A process for the preparation of an ultra-high molecular weight ethylene homopolymer having a MFR21 of 0.01 g/10 min or less, said process comprising: (I) prepolymerising at least ethylene at a temperature of 0 to 90° C. in the presence of a heterogeneous Ziegler Natta catalyst to prepare an ethylene prepolymer having an Mw of 40,000 to 600,000 g/mol; and thereafter in the presence of the prepolymer and said catalyst; (II) polymerising ethylene at a temperature of 55° C. or less, such as 20 to 55° C., to prepare said UHMW ethylene homopolymer; wherein the UHMW ethylene homopolymer comprises up to 8 wt. % of said prepolymer.Type: GrantFiled: July 18, 2019Date of Patent: June 20, 2023Assignee: BOREALIS AGInventors: Irfan Saeed, Esa Kokko, Mika Salo, Sanjay Rastogi, Dario Romano, Sara Ronca
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Publication number: 20210340289Abstract: A process for the preparation of an ultra-high molecular weight ethylene homopolymer having a MFR21 of 0.01 g/10 min or less, said process comprising: (I) prepolymerising at least ethylene at a temperature of 0 to 90° C. in the presence of a heterogeneous Ziegler Natta catalyst to prepare an ethylene prepolymer having an Mw of 40,000 to 600,000 g/mol; and thereafter in the presence of the prepolymer and said catalyst; (II) polymerising ethylene at a temperature of 55° C. or less, such as 20 to 55° C., to prepare said UHMW ethylene homopolymer; wherein the UHMW ethylene homopolymer comprises up to 8 wt. % of said prepolymer.Type: ApplicationFiled: July 18, 2019Publication date: November 4, 2021Inventors: Irfan SAEED, Esa KOKKO, Mika SALO, Sanjay RASTOGI, Dario ROMANO, Sara RONCA
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Patent number: 9556295Abstract: Procatalyst comprising an inorganic support, a chlorine compound carried on said support, a magnesium compound carried on said support, a titanium compound carried on said support, and a compound comprising two oxygen containing rings, wherein said two rings are linked via a bridge selected from the group consisting of carbon bridge, silicon bridge, ethane-1.2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge.Type: GrantFiled: April 28, 2014Date of Patent: January 31, 2017Assignee: Borealis AGInventors: Irfan Saeed, Esa Kokko, Paivi Waldvogel, Marja Mustonen, Thomas Garoff
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Patent number: 9434798Abstract: 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: GrantFiled: November 25, 2013Date of Patent: September 6, 2016Assignee: BOREALIS AGInventors: Esa Kokko, Anneli Pakkanen, Markku Vahteri, Magnus Palmlof, Jeroen Oderkerk
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Publication number: 20160060372Abstract: Procatalyst comprising an inorganic support, a chlorine compound carried on said support, a magnesium compound carried on said support, a titanium compound carried on said support, and a compound comprising two oxygen containing rings, wherein said two rings are linked via a bridge selected from the group consisting of carbon bridge, silicon bridge, ethane-1.2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge.Type: ApplicationFiled: April 28, 2014Publication date: March 3, 2016Inventors: Irfan Saeed, Esa Kokko, Paivi Waldvogel, Marja Mustonen, Thomas Garoff
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Publication number: 20140183797Abstract: 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: November 25, 2013Publication date: July 3, 2014Applicant: BOREALIS AGInventors: ESA KOKKO, ANNELI PAKKANEN, MARKKU VAHTERI, MAGNUS PALMLOF, JEROEN ODERKERK
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Patent number: 8569532Abstract: A complex containing a ligand of formula (I): useful in the formation of olefin polymerization catalysts and their use in olefin polymerization.Type: GrantFiled: June 11, 2012Date of Patent: October 29, 2013Assignee: Borealis Technology OyInventors: Alexander Zelmanovich Voskoboynik, Andrei Fyodorovich Asachenko, Dmitry Konanovich, Mikhail V. Nikulin, Alexey Tzarev, Janne Maaranen, Tiina Vanne, Jyrki Kauhanen, Erik Mansner, Esa Kokko, Laura Saarinen
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Patent number: 8546499Abstract: Ziegler-Natta catalyzed linear low density polyethylene which satisfies the following conditions: a) a density, according to ISO 1183, of from 900 to 925 kg/m3, b) a C4-C10-comonomer content, determined by Fourier transform infrared spectroscopy, of 1 to 16 wt % c) a weight average molecular weight Mw, determined by gel permeation chromatography, of at least 200 000, d) wherein the linear low density polyethylene comprises, by Crystallisation Analysis Fractionation (CRYSTAF) an amorphous fraction soluble at a temperature below 30° C. of at most 10 wt % and a fraction crystallising between 60 to 75° C. of at least 35 wt % and e) by temperature rising elution fractionation (TREF) analysis, at least 70 wt % of a crystallising polymer component having an elution temperature range from 60° C. to 94° C. and less than 10 wt % of a crystallising polymer component having an elution temperature range from 30° C. to 60° C.Type: GrantFiled: April 26, 2010Date of Patent: October 1, 2013Assignee: Borealis AGInventors: Thomas Garroff, Paivi Waldvogel, Kallio Kalle, Virginie Eriksson, Aki Aittola, Esa Kokko
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Patent number: 8409681Abstract: A process is disclosed for producing a multi-modal linear low density polyethylene in at least two staged reactors connected in series, comprising (i) polymerizing in a first slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A); and (ii) polymerizing in a second gas or slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B). The Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of formula (I) b) an aluminum compound of formula (II); and c) a vanadium compound and a titanium compound having a molar ratio (V:Ti) from 10:90 to 90:10; and 2) one or more organometallic cocatalvsts of formula (III). The linear low density polyethylene shows an improved comonomer composition distribution Formulas (I), (II), and (III) are described herein.Type: GrantFiled: February 22, 2010Date of Patent: April 2, 2013Assignee: Borealis AGInventors: Thomas Garoff, Paivi Waldvogel, Kalle Kallio, Virginie Eriksson, Aki Aittola, Esa Kokko
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Publication number: 20120252993Abstract: A complex containing a ligand of formula (I): useful in the formation of olefin polymerization catalysts and their use in olefin polymerization.Type: ApplicationFiled: June 11, 2012Publication date: October 4, 2012Applicant: BOREALIS TECHNOLOGY OYInventors: Alexander Zelmanovich VOSKOBOYNIKOV, Andrei Fyodorovich Asachenko, Dmitry Konanovich, Mikhail V. Nikulin, Alexey Tzarev, Janne Maaranen, Tiina Vanne, Jyrki Kauhanen, Erik Mansner, Esa Kokko, Laura Saarinen
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Publication number: 20120053308Abstract: Ziegler-Natta catalyzed linear low density polyethylene which satisfies the following conditions: a) a density, according to ISO 1183, of from 900 to 925 kg/m3, b) a C4-C10-comonomer content, determined by Fourier transform infrared spectroscopy, of 1 to 16 wt % c) a weight average molecular weight Mw, determined by gel permeation chromatography, of at least 200 000, d) wherein the linear low density polyethylene comprises, by Crystallisation Analysis Fractionation (CRYSTAF) an amorphous fraction soluble at a temperature below 30° C. of at most 10 wt % and a fraction crystallising between 60 to 75° C. of at least 35 wt % and e) by temperature rising elution fractionation (TREF) analysis, at least 70 wt % of a crystallising polymer component having an elution temperature range from 60° C. to 94° C. and less than 10 wt % of a crystallising polymer component having an elution temperature range from 30° C.Type: ApplicationFiled: April 26, 2010Publication date: March 1, 2012Applicant: BOREALIS AGInventors: Thomas Garroff, Paivi Waldvogel, Kallio Kalle, Virginie Eriksson, Aki Aittola, Esa Kokko
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Publication number: 20110306737Abstract: Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR1)2-n(R1)n, wherein each R1 independently represents a C1-C20 hydrocarbyl group and 0?n<2 and may or may not be an integer; b) an aluminium compound of the formula (II) Al(R2)mX3-m, wherein each R2 iType: ApplicationFiled: February 22, 2010Publication date: December 15, 2011Inventors: Thomas Garoff, Päivi Waldvogel, Kalle Kallio, Virginie Eriksson, Aki Aittola, Esa Kokko
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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: 20110263801Abstract: Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR1)2-n(R1)n, wherein each R1 independently represents a C1-C20 hydrocarbyl group and 0<n<2 and may or may not be an integer; b) an aluminium compound of the formula (II) Al(R2)mX3-m, wherein eachType: ApplicationFiled: February 22, 2010Publication date: October 27, 2011Inventors: Thomas Garoff, Päivi Waldvogel, Kalle Kallio, Virginie Eriksson, Aki Aittola, Esa Kokko
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Publication number: 20100305286Abstract: A complex comprising a ligand of formula (I), wherein each R1, which may be the same or different, is hydrogen, an optionally substituted C1-20 hydrocarbyl group, N(R5)2, silyl, siloxy; an optionally substituted heteroaryl group, an optionally substituted heterocyclyl group or two R1 groups on adjacent carbon atoms taken together may form an optionally substituted 5- to 8-membered fused ring; each R2, which may be the same or different is hydrogen, is hydrogen, an optionally substituted C1-20 hydrocarbyl group, N(R5)2, silyl, siloxy; an optionally substituted heteroaryl group, or an optionally substituted heterocyclyl group; R3, which binds to the 6-membered ring of the indenyl group, is —(Si(R5)2)p—, where p is 1 or 2, —(C(R5)2)n- where n is an integer of 2 or more; each R4 which may be the same or different, is hydrogen, an optionally substituted C1-20 hydrocarbyl group, N(R5)2, silyl, siloxy, an optionally substituted heteroaryl group, an optionally substituted heterocyclyl group or two R4 groups on adjaceType: ApplicationFiled: August 27, 2008Publication date: December 2, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Alexander Zelmanovich Voskoboynikov, Andrei Fyodorovich Asachenko, Dmitry Konanovich, Mikhail V. Nikulin, Alexey Tzarev, Janne Maaranen, Tiina Vanne, Jyrki Kauhanen, Erik Mansner, Esa Kokko, Laura Saarinen
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Publication number: 20090318642Abstract: Use of a catalyst composition treated with a surface modifier in the polymerization of olefins for lowering the gel content in the resulting polyolefin, wherein the surface modifier has a polar residue capable of interacting with the surface of the catalyst composition and a lipophilic residue and is selected from carboxylate metal salts, nitrogen containing catalyst surface modifiers, phosphorus containing catalyst surface modifiers, oxygen containing catalyst surface modifiers, sulfur containing catalyst surface modifiers, fluoro containing polymeric catalyst surface modifiers or mixtures thereof and wherein the gel content is determined by using pressed plate gel analysis method.Type: ApplicationFiled: December 29, 2006Publication date: December 24, 2009Applicant: BOREALIS TECHNOLOGY OYInventors: Esa Kokko, Janne Maaranen, John Severn, Marjaana Lommi, Alexander Krajete, Tore Dreng