Patents by Inventor Jesper Ekström
Jesper Ekström 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: 12286565Abstract: The present invention relates to a process for preparing a bonding resin, lignin in solid form or in the form of a dispersion in water is mixed with a crosslinker; and optionally one or more additives followed by addition of a basic solution. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards, laminates or mineral wool insulation.Type: GrantFiled: June 22, 2020Date of Patent: April 29, 2025Assignee: Stora Enso OYJInventors: Ashar Zafar, Jesper Ekström
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Patent number: 12221545Abstract: The present invention relates to a liquid lignin composition, particularly useful in the manufacture of resins for products such as insulation, laminates and engineered wood products such as oriented strand boards (OSB). The liquid lignin composition has a low viscosity even at low water content.Type: GrantFiled: July 2, 2018Date of Patent: February 11, 2025Assignee: Stora Enso OYJInventors: Ashar Zafar, Jesper Ekström, Dimitri Areskogh
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Publication number: 20250002723Abstract: The present invention is directed to a process for preparing a binder for an asphalt composition. The binder comprises lignin, a renewable and bio-based material, which replaces part of the fossil-based bitumen.Type: ApplicationFiled: November 8, 2022Publication date: January 2, 2025Applicant: Stora Enso OYJInventors: Heikki Lotti, Jesper Ekström, Dimitri Areskogh
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Publication number: 20240425701Abstract: The present invention is directed to a process for preparing a binder for an asphalt composition. The binder comprises lignin, a renewable and bio-based material, which replaces part of the fossil-based bitumen.Type: ApplicationFiled: November 8, 2022Publication date: December 26, 2024Applicant: Stora Enso OYJInventors: Heikki Lotti, Jesper Ekström, Dimitri Areskogh
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Patent number: 12077682Abstract: The present invention relates to the use of a bonding resin prepared by providing an aqueous solution comprising at least one biobased product selected from tannin, starch, soy protein, glycerol, chitin, pectin, dextrose or other carbohydrates, or a mixture thereof and mixing the aqueous solution with one or more of certain crosslinkers such as ethers, and optionally one or more additives. The bonding resin is used in the manufacture of laminates, mineral wool insulation or wood products, such as engineered wood products, such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF) or particle boards. Preferably, the bonding resin does not comprise lignin.Type: GrantFiled: May 13, 2020Date of Patent: September 3, 2024Assignee: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Patent number: 11981838Abstract: The present invention relates to an adhesive formulation comprising lignin, suitable for use in the manufacture of for example wood products. The lignin is provided in the form of a solution or dispersion or in dry solid form, such as in the form of a powder. The adhesive formulation also comprises phenol-formaldehyde (PF) resin and/or lignin-phenol-formaldehyde (LPF) resin. The adhesive formulation may also comprise extenders, hardeners, fillers and other additives, to achieve an adhesive formulation useful in the manufacture of for example wood products, such as plywood and laminated veneer lumber (LVL). The adhesive formulation can also be used in the manufacture of laminates and oriented strand boards.Type: GrantFiled: April 16, 2019Date of Patent: May 14, 2024Assignee: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Patent number: 11667792Abstract: The present invention relates to a process for lignin dissolution in which partial methylolation of lignin is carried out during the step of preparing a solution of lignin in an aqueous medium comprising alkali. The lignin prepared according to the process of the present invention can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.Type: GrantFiled: May 22, 2018Date of Patent: June 6, 2023Assignee: Stora Enso OYJInventors: Ashar Zafar, Jesper Ekström
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Publication number: 20230026752Abstract: The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of an aqueous solution and mixed with one or more of a crosslinker and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards.Type: ApplicationFiled: December 16, 2020Publication date: January 26, 2023Applicant: Stora Enso OYJInventors: Ashar Zafar, Jesper Ekström
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Publication number: 20230002654Abstract: The present invention relates to a process for preparing a bonding resin, wherein lignin is provided in the form of a solution in ammonia and/or an organic base and mixed with one or more crosslinkers and optionally one or more additives. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards. The bonding resin is also useful for example in composites, molding compounds and foundry applications.Type: ApplicationFiled: December 16, 2020Publication date: January 5, 2023Applicant: Stora Enso OYJInventors: Ashar Zafar, Huynh Tram Anh Pham, Katarina Hägg, Jesper Ekström
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Publication number: 20220259466Abstract: The present invention relates to the use of a bonding resin prepared by providing an aqueous solution comprising at least one biobased product selected from tannin, starch, soy protein, glycerol, chitin, pectin, dextrose or other carbohydrates, or a mixture thereof and mixing the aqueous solution with one or more of certain crosslinkers such as ethers, and optionally one or more additives. The bonding resin is used in the manufacture of laminates, mineral wool insulation or wood products, such as engineered wood products, such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF) or particle boards. Preferably, the bonding resin does not comprise lignin.Type: ApplicationFiled: May 13, 2020Publication date: August 18, 2022Applicant: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Publication number: 20220243105Abstract: The present invention relates to a process for preparing a bonding resin, lignin in solid form or in the form of a dispersion in water is mixed with a crosslinker; and optionally one or more additives followed by addition of a basic solution. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards, laminates or mineral wool insulation.Type: ApplicationFiled: June 22, 2020Publication date: August 4, 2022Applicant: Stora Enso OYJInventors: Ashar Zafar, Jesper Ekström
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Publication number: 20220033561Abstract: The present invention relates to a process for lignin dissolution in which partial methylolation of lignin is carried out during the step of preparing a solution of lignin in an aqueous medium comprising alkali and phenol. The lignin prepared according to the process of the present invention can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.Type: ApplicationFiled: November 26, 2019Publication date: February 3, 2022Applicant: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Publication number: 20210388200Abstract: The present invention relates to an improved process for preparing an aqueous dispersion of lignin and the use of said suspension in the preparation of a resin.Type: ApplicationFiled: October 7, 2019Publication date: December 16, 2021Applicant: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström, Dimitri Areskogh
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Patent number: 11130257Abstract: The present invention relates to a lignin-based phenolic resin, particularly useful in the manufacture of oriented strand boards (OSB).Type: GrantFiled: July 3, 2017Date of Patent: September 28, 2021Assignee: Stora Enso OYJInventors: Ashar Zafar, Dimitri Areskogh, Jesper Ekström
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Publication number: 20210238464Abstract: The present invention relates to an adhesive formulation comprising lignin, suitable for use in the manufacture of for example wood products. The lignin is provided in the form of a solution or dispersion or in dry solid form, such as in the form of a powder. The adhesive formulation also comprises phenol-formaldehyde (PF) resin and/or lignin-phenol-formaldehyde (LPF) resin. The adhesive formulation may also comprise extenders, hardeners, fillers and other additives, to achieve an adhesive formulation useful in the manufacture of for example wood products, such as plywood and laminated veneer lumber (LVL). The adhesive formulation can also be used in the manufacture of laminates and oriented strand boards.Type: ApplicationFiled: April 16, 2019Publication date: August 5, 2021Applicant: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Publication number: 20210238424Abstract: The present invention relates to a process for preparing a bonding resin, wherein a resin prepared from lignin, phenol and formaldehyde is mixed with a resin prepared from phenol and formaldehyde to achieve a mixture useful as a bonding resin useful in the manufacture of laminates, mineral wool insulation and wood products such as plywood, laminated veneer lumber (LVL), medium density fiberboards (MDF) and particle boards.Type: ApplicationFiled: April 16, 2019Publication date: August 5, 2021Applicant: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Publication number: 20210238367Abstract: The present invention relates to a process for preparing a bonding resin, wherein a resin prepared from lignin, phenol and formaldehyde and comprising a formaldehyde scavenger, is mixed with a resin prepared from phenol and formaldehyde and comprising a formaldehyde scavenger to achieve a mixture useful as a bonding resin useful in the manufacture of oriented strand board (OSB).Type: ApplicationFiled: April 16, 2019Publication date: August 5, 2021Applicant: Stora Enso OYJInventors: Ben Nasli Bakir, Ashar Zafar, Jesper Ekström
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Patent number: 10717873Abstract: The present invention relates to a liquid lignin mixture comprising 3-50 wt % methanol, 12-50 wt % lignin and 5-85 wt % aqueous alkali solution wherein the concentration of said aqueous alkali solution is 1 to 50 wt % of alkali in water, based on the weight of said alkali solution prior to mixing with the other components of the mixture. The liquid lignin mixture can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.Type: GrantFiled: March 20, 2017Date of Patent: July 21, 2020Assignee: Stora Enso OYJInventors: Ashar Zafar, Dimitri Areskogh, Jesper Ekström
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Publication number: 20200216672Abstract: The present invention relates to a liquid lignin composition, particularly useful in the manufacture of resins for products such as insulation, laminates and engineered wood products such as oriented strand boards (OSB). The liquid lignin composition has a low viscosity even at low water content.Type: ApplicationFiled: July 2, 2018Publication date: July 9, 2020Applicant: Stora Enso OYJInventors: Ashar ZAFAR, Jesper EKSTRÖM, Dimitri ARESKOGH
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Publication number: 20200079960Abstract: The present invention relates to a process for lignin dissolution in which partial methylolation of lignin is carried out during the step of preparing a solution of lignin in an aqueous medium comprising alkali. The lignin prepared according to the process of the present invention can be used to manufacture lignin-based phenolic resins, which are particularly useful in the manufacture of laminates.Type: ApplicationFiled: May 22, 2018Publication date: March 12, 2020Applicant: Stora Enso OYJInventors: Ashar Zafar, Jesper Ekström