Patents by Inventor Kyu Reon LEE
Kyu Reon LEE 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: 20240166525Abstract: Provided is a method for producing silica aerogel using a pre-hydrolyzed polysilicate, the method comprising: applying a polysilicate as a reactant when synthesizing of the pre-hydrolyzed polysilicate; and hydrating the polysilicate in the presence of an alcohol-based compound, which is generated through the hydration of a compound of Formula 1 without the addition of a separate alcohol-based solvent: R1—Si(OR2)3??[Formula 1] wherein R1 is an alkyl having 1 to 20 carbon atoms, a cycloalkyl having 3 to 20 carbon atoms, or a vinyl having 1 to 20 carbon atoms, and each R2 is independently an alkyl having 1 to 20 carbon atoms.Type: ApplicationFiled: June 7, 2022Publication date: May 23, 2024Inventors: Kyu Reon LEE, Kyoung Shil OH
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Patent number: 11945915Abstract: A method for synthesizing a pre-hydrolyzed polysilicate, wherein a polysilicate is applied as a reactant when synthesizing the pre-hydrolyzed polysilicate, and the total amount of water added in the reaction system is specified. The method is capable of omitting a condensation reaction by applying a polysilicate as a reactant, thereby significantly shortening synthesis time and reducing production costs when compared with a typical synthesis method in which alkoxysilane-based monomer compound is used as a reactant. In addition, the gelation reaction time and the weight average molecular weight can be easily controlled, and a pre-hydrolyzed polysilicate excellent in storage stability and processability can be synthesized.Type: GrantFiled: November 27, 2019Date of Patent: April 2, 2024Assignee: LG CHEM, LTD.Inventors: Kyu Reon Lee, Kyoung Shil Oh, Jong Hun Kim, Se Won Baek
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Patent number: 11760646Abstract: Provided is a silica aerogel blanket capable of preventing deterioration of heat insulating performance while reducing dust generation, and method for manufacturing the same. The method manufactures a low-dust silica aerogel blanket by separately adding a silica sol to prevent an opacifying agent from being exposed to the surface of the silica aerogel blanket.Type: GrantFiled: September 19, 2018Date of Patent: September 19, 2023Assignee: LG Chem, Ltd.Inventors: Myung Eun Oh, Kyu Reon Lee, Je Kyun Lee
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Publication number: 20230287019Abstract: Provided is a method of manufacturing an alkoxysilane compound that is capable of more effectively removing ammonia generated as a by-product when the alkoxysilane compound is manufactured using a silazane-based compound, the method including adding an alcohol to a silazane-based compound of Formula 1: and allowing the alcohol to react with the silazane-based compound to prepare a first mixture comprising an alkoxysilane compound and ammonia; adding an alcohol and a compound of Formula 2: (R1)n(R2)3-nSi—X to the first mixture and allowing the alcohol and the compound of Formula 2 to react with the first mixture to prepare a second mixture in which an additional alkoxysilane compound and an ammonium salt are generated; adding an aqueous solvent to the second mixture to dissolve the ammonium salt; and separating and removing the ammonium salt.Type: ApplicationFiled: July 30, 2021Publication date: September 14, 2023Inventors: Kyu Reon LEE, Se Won BAEK
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Publication number: 20230227479Abstract: Provided is a method of manufacturing an alkoxysilane compound, the method capable of more effectively removing ammonia generated as a byproduct when the alkoxysilane compound is manufactured with a silazane-based compound by adding and reacting a silazane-based compound. The method includes: adding an alcohol to a silazane-based compound and allowing the alcohol to react with the silazane-based compound to manufacture a first mixture containing an alkoxysilane compound and ammonia; adding an acid having a pKa of 2-6.5 to the first mixture to prepare a second mixture containing the alkoxysilane compound and an ammonium salt; adding an aqueous solvent to the second mixture to dissolve the ammonium salt; and separating and removing the ammonium salt.Type: ApplicationFiled: July 30, 2021Publication date: July 20, 2023Inventors: Kyu Reon LEE, Se Won BAEK
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Publication number: 20220250922Abstract: The present invention relates to an aerogel blanket including an aerogel structure and a substrate for a blanket, wherein the aerogel structure includes a three-dimensional network structure formed by a plurality of aerogel particles aggregated or bonded, and an average aerogel structure size (D50) measured by spraying 10 ml of dry powder of the aerogel structure with air at a pressure of 15 psi, and using laser diffraction of 780 nm wavelength is 5 ?m to 10 ?m.Type: ApplicationFiled: September 28, 2020Publication date: August 11, 2022Applicant: LG CHEM, LTD.Inventors: Hyun Woo JEON, Se Won BAEK, Kyu Reon LEE, Mi Ri KIM
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Patent number: 11365126Abstract: Provided is a method for manufacturing an aerogel blanket having improved processability by reducing manufacturing time and cost, the method including the steps of mixing a precursor material, an acid catalyst and a hydrous alcohol to prepare a sol, depositing a substrate in the sol, and reacting with a gaseous silazane-based compound to form a gel and to perform aging and surface modification reaction simultaneously to form a wet gel blanket, and drying the wet gel blanket to manufacture an aerogel blanket.Type: GrantFiled: December 13, 2019Date of Patent: June 21, 2022Assignee: LG CHEM, LTD.Inventors: Myung Eun Oh, Se Won Baek, Kyu Reon Lee
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Publication number: 20220098046Abstract: Provided is a silica sol, a silica aerogel blanket using the same, and a method for manufacturing the same, wherein a hydrophobizing agent, a base catalyst, an organic solvent, and water are included in a catalyst composition when manufacturing the silica aerogel blanket, so that a wet aging step which is performed under high-temperature conditions and increases the amount of a solvent used, and a surface modification step which uses a large amount of an organic solvent and an expensive surface modifier, resulting in a process that is complex and long and thus inhibiting economic feasibility and productivity, can be omitted.Type: ApplicationFiled: September 28, 2020Publication date: March 31, 2022Inventors: Kyu Reon LEE, Se Won BAEK, Hyun Woo JEON, Mi Ri KIM, Sung Min YU, Sang Woo PARK, Bong June KIM
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Publication number: 20210206923Abstract: A method for synthesizing a pre-hydrolyzed polysilicate, wherein a polysilicate is applied as a reactant when synthesizing the pre-hydrolyzed polysilicate, and the total amount of water added in the reaction system is specified. The method is capable of omitting a condensation reaction by applying a polysilicate as a reactant, thereby significantly shortening synthesis time and reducing production costs when compared with a typical synthesis method in which alkoxysilane-based monomer compound is used as a reactant. In addition, the gelation reaction time and the weight average molecular weight can be easily controlled, and a pre-hydrolyzed polysilicate excellent in storage stability and processability can be synthesized.Type: ApplicationFiled: November 27, 2019Publication date: July 8, 2021Inventors: Kyu Reon LEE, Kyoung Shil OH, Jong Hun KIM, Se Won BAEK
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Publication number: 20210198112Abstract: Provided is a method for manufacturing an aerogel blanket having improved processability by reducing manufacturing time and cost, the method including the steps of mixing a precursor material, an acid catalyst and a hydrous alcohol to prepare a sol, depositing a substrate in the sol, and reacting with a gaseous silazane-based compound to form a gel and to perform aging and surface modification reaction simultaneously to form a wet gel blanket, and drying the wet gel blanket to manufacture an aerogel blanket.Type: ApplicationFiled: December 13, 2019Publication date: July 1, 2021Inventors: Myung Eun OH, Se Won BAEK, Kyu Reon LEE
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Publication number: 20210114887Abstract: Provided is a silica aerogel blanket capable of preventing deterioration of heat insulating performance while reducing dust generation, and method for manufacturing the same. The method manufactures a low-dust silica aerogel blanket by separately adding a silica sol to prevent an opacifying agent from being exposed to the surface of the silica aerogel blanket.Type: ApplicationFiled: September 19, 2018Publication date: April 22, 2021Inventors: Myung Eun OH, Kyu Reon LEE, Je Kyun LEE
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Patent number: 10647820Abstract: The present invention relates to a two-step synthesis method of a pre-hydrolyzed alkyl polysilicate. In the method, a silica precursor hydrated to 90 to 100% is added to maximize a condensation reaction rate, and a silica precursor hydrated to 25 to 70% is additionally added to terminate a condensation reaction, so that a condensation reaction time may be remarkably shortened relative to a conventional one-step synthesis method and may be shortened even without the use of a condensation catalyst, so that the catalyst purchase cost and the catalyst separation step in the process may not be required, thus having a simple process and reducing the production cost. Also, the amount and time point of the silica precursor additionally added may be controlled, thereby easily controlling the gelation reaction time and the weight average molecular weight, and synthesizing the pre-hydrolyzed alkyl polysilicate excellent in storage stability and processabilty.Type: GrantFiled: October 30, 2017Date of Patent: May 12, 2020Assignee: LG CHEM, LTD.Inventors: Kyu Reon Lee, Kyoung Shil Oh, Je Kyun Lee
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Publication number: 20190330423Abstract: The present invention relates to a two-step synthesis method of a pre-hydrolyzed alkyl polysilicate. In the method, a silica precursor hydrated to 90 to 100% is added to maximize a condensation reaction rate, and a silica precursor hydrated to 25 to 70% is additionally added to terminate a condensation reaction, so that a condensation reaction time may be remarkably shortened relative to a conventional one-step synthesis method and may be shortened even without the use of a condensation catalyst, so that the catalyst purchase cost and the catalyst separation step in the process may not be required, thus having a simple process and reducing the production cost. Also, the amount and time point of the silica precursor additionally added may be controlled, thereby easily controlling the gelation reaction time and the weight average molecular weight, and synthesizing the pre-hydrolyzed alkyl polysilicate excellent in storage stability and processabilty.Type: ApplicationFiled: October 30, 2017Publication date: October 31, 2019Inventors: Kyu Reon LEE, Kyoung Shil OH, Je Kyun LEE