公开(公告)号：US11760646B2

公开(公告)日：2023-09-19

申请号：US16762675

申请日：2018-09-19

Applicant: LG CHEM, LTD.

Inventor： Myung Eun Oh ,  Kyu Reon Lee ,  Je Kyun Lee

IPC: C01B33/158 ,  C09D7/61 ,  C01B33/159 ,  C04B28/26 ,  C04B111/00

CPC classification number: C01B33/1585 ,  C01B33/159 ,  C04B28/26 ,  C09D7/61 ,  C01P2006/90 ,  C04B2111/00568 ,  C04B2111/00577

Abstract: 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.

公开(公告)号：US20240228304A1

公开(公告)日：2024-07-11

申请号：US18431792

申请日：2024-02-02

Applicant: LG CHEM, LTD.

Inventor： Kyu Reon Lee ,  Se Won Baek ,  Hyun Woo Jeon ,  Mi Ri Kim ,  Sung Min Yu ,  Sang Woo Park ,  Bong June Kim

IPC: C01B33/159 ,  C01B33/145 ,  C01B33/158 ,  F16L59/02

CPC classification number: C01B33/159 ,  C01B33/145 ,  C01B33/1585 ,  F16L59/026 ,  F16L59/028 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/32

Abstract: 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.

公开(公告)号：US11945915B2

公开(公告)日：2024-04-02

申请号：US17057292

申请日：2019-11-27

Applicant: LG CHEM, LTD.

Inventor： Kyu Reon Lee ,  Kyoung Shil Oh ,  Jong Hun Kim ,  Se Won Baek

IPC: C08G77/02 ,  C01B33/143 ,  C01B33/158 ,  C08J3/075 ,  C08J9/28

CPC classification number: C08G77/02 ,  C01B33/143 ,  C01B33/1585 ,  C08J3/075 ,  C08J9/28

Abstract: 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.

公开(公告)号：US11365126B2

公开(公告)日：2022-06-21

申请号：US17057251

申请日：2019-12-13

Applicant: LG CHEM, LTD.

Inventor： Myung Eun Oh ,  Se Won Baek ,  Kyu Reon Lee

IPC: C01B33/158 ,  B01J13/00 ,  C01B33/143

Abstract: 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.

公开(公告)号：US20250051172A1

公开(公告)日：2025-02-13

申请号：US18931857

申请日：2024-10-30

Applicant: LG Chem, Ltd.

Inventor： Kyu Reon Lee ,  Se Won Baek ,  Hyun Woo Jeon ,  Mi Ri Kim ,  Sung Min Yu ,  Sang Woo Park ,  Bong June Kim

IPC: C01B33/159 ,  C01B33/145 ,  C01B33/158 ,  F16L59/02

Abstract: 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, 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.

公开(公告)号：US10647820B2

公开(公告)日：2020-05-12

申请号：US16065720

申请日：2017-10-30

Applicant: LG CHEM, LTD.

Inventor： Kyu Reon Lee ,  Kyoung Shil Oh ,  Je Kyun Lee

IPC: C08G77/02

Abstract: 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.