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公开(公告)号：US20250101202A1
公开(公告)日：2025-03-27
申请号：US18713273
申请日：2022-11-30
Applicant: HANWHA SOLUTIONS CORPORATION
Inventor： Jiyeon KIM , Yujin SIM , Eun Ji WOO , Dowoo KWON , Jong Jin KIM
Abstract: The present disclosure relates to an isocyanate composition having excellent storage stability and an optical lens produced from such an isocyanate composition.
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Patent Agency Ranking
公开(公告)号：US20240067609A1
公开(公告)日：2024-02-29
申请号：US18256937
申请日：2021-12-10
Applicant: HANWHA SOLUTIONS CORPORATION
Inventor： Hyun SEO , Jiyeon KIM , Namjin JANG
IPC: C07D225/02 , B01J27/26
CPC classification number: C07D225/02 , B01J27/26 , C07B2200/13
Abstract: The present invention relates to a laurolactam preparation method, a synthesizing device therefor, a laurolactam composition prepared thereby, and a polylaurolactam preparation method using the laurolactam composition, the laurolactam preparation method comprising the steps of: a) synthesizing cyclododecanone oxime into laurolactam through a Bechmann rearrangement in the presence of a catalyst; b) mixing the laurolactam synthesized in step a) in a good solvent and removing the catalyst; and c) mixing the laurolactam, from which the catalyst was removed in step b), in a poor solvent and recrystallizing same.
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公开(公告)号：US20230073615A1
公开(公告)日：2023-03-09
申请号：US18054558
申请日：2022-11-11
Applicant: HANWHA SOLUTIONS CORPORATION
Inventor： Jiyeon KIM , Youngjin Kim , Jeongseok Park , Jinho Park , Hyun Seo , Seonghoon Hyeong , Kyuho Song
IPC: C07D201/04
Abstract: The present invention relates to a laurolactam preparation method and synthesis apparatus, and epoxidation and a rearrangement reaction are performed in the conversion of cyclododecene into cyclododecanone so that the preparation method can synthesize laurolactam having a higher purity with a higher selectivity and in a higher yield than a conventional preparation method.
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公开(公告)号：US20220064094A1
公开(公告)日：2022-03-03
申请号：US17298921
申请日：2019-09-16
Applicant: HANWHA SOLUTIONS CORPORATION
Inventor： Jiyeon KIM , Jeongseok PARK , Jinho PARK , Kyuho SONG
IPC: C07C45/28
Abstract: The present invention relates to a method of preparing cyclododecanone. According to the present invention, a method of preparing cyclododecanone which allows implementation of a high conversion rate and minimization of production of unreacted materials and reaction by-products may be provided. In addition, the present invention implements a high conversion rate and a high selectivity even by a simplified process configuration, and thus may be usefully utilized in an economical method of preparing laurolactam, allowing commercially easy mass production.
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公开(公告)号：US20230020512A1
公开(公告)日：2023-01-19
申请号：US17782244
申请日：2020-10-27
Applicant: HANWHA SOLUTIONS CORPORATION
Inventor： Jinho PARK , Jiyeon KIM , Hyun SEO , Namjin JANG
IPC: C07D201/04 , C07D225/02
Abstract: Provided are a method of preparing laurolactam including: a) synthesizing laurolactam by Bechmann rearrangement of cyclododecanone oxime under a catalyst system, b) mixing the laurolactam synthesized in a) with a good solvent and removing the catalyst system, and c) mixing the laurolactam from which the catalyst system has been removed in b) with a poor solvent and performing recrystallization, a synthesis device thereof, a laurolactam composition prepared therefrom, and a method of preparing polylaurolactam using the laurolactam composition.
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公开(公告)号：US20220024868A1
公开(公告)日：2022-01-27
申请号：US17311353
申请日：2019-12-18
Applicant: HANWHA SOLUTIONS CORPORATION
Inventor： Jiyeon KIM , Youngjin KIM , Jeongseok PARK , Jinho PARK , Hyun SEO , Seonghoon HYEONG , Kyuho SONG
IPC: C07D201/04
Abstract: The present invention relates to a laurolactam preparation method and synthesis apparatus, and epoxidation and a rearrangement reaction are performed in the conversion of cyclododecene into cyclododecanone so that the preparation method can synthesize laurolactam having a higher purity with a higher selectivity and in a higher yield than a conventional preparation method.
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