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1.发明公开公开(公告)号：US20240343672A1
公开(公告)日：2024-10-17
申请号：US18687102
申请日：2023-09-25
发明人： Ji-Hun KIM , Kwang-Woo PARK , Seong-Ki LEE , Joong Ki LEE , Yuntae JIN
CPC分类号： C07C67/54 , C08J11/24 , C08J2367/03
摘要： A polymerization raw material obtained by the depolymerization of waste polyester is disclosed. The polymerization raw material contains recycled bis(2-hydroxyethyl) terephthalate in which the contents of acetate-based ester compounds and diethylene glycol ester compounds are adjusted to specific levels. The polymerization raw material is excellent in purity and quality, and free from the problem that thermal resistance characteristics deteriorate in the polymerization of a polymer from the recycled monomer.
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公开(公告)号：US20240309151A1
公开(公告)日：2024-09-19
申请号：US18576662
申请日：2022-08-01
发明人： Jae-Il CHUNG , Han-Gyeol CHO , Hyun Jun CHO
CPC分类号： C08G65/34 , C08J5/18 , C08J2371/08
摘要： According to this invention, there are provided polytrimethylene ether glycol having low moisture content and narrow polydispersity and a method for preparation thereof.
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公开(公告)号：US20240270901A1
公开(公告)日：2024-08-15
申请号：US18568372
申请日：2022-05-24
发明人： Da-Young HWANG , Sangwoo KIM , Ha-Neul KIM , Boo-Youn LEE
CPC分类号： C08G63/60 , C08J5/18 , C08J2367/02
摘要： This invention relates to polyester copolymer comprising recycled monomers, a method for preparing the same, and an article comprising the same, and this invention uses recycled monomers but can provide polyester copolymer having excellent properties, and particularly, can provide polyester copolymer having excellent color property and transparency.
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公开(公告)号：US11993706B2
公开(公告)日：2024-05-28
申请号：US17422683
申请日：2019-07-10
发明人： Yoo Jin Lee , Da-Young Hwang
IPC分类号： C08L67/02 , B29C48/00 , B29C48/08 , B29C48/21 , B29C55/14 , B32B27/08 , B32B27/36 , C08J5/18 , B29K67/00 , B29K105/00
CPC分类号： C08L67/02 , B29C48/0018 , B29C48/08 , B29C48/21 , B29C55/143 , B32B27/08 , B32B27/36 , C08J5/18 , B29K2067/003 , B29K2105/0094 , B29K2995/0012 , B29K2995/0053 , B32B2250/244 , B32B2307/30 , B32B2307/518 , B32B2307/732 , C08J2367/02 , C08J2467/02 , C08L2203/16 , C08L2203/30 , C08L2205/025
摘要： The present disclosure relates to a polyester film and a preparation method of the same. Since the polyester film includes a resin layer formed from a polyester resin including a first diol moiety derived from isosorbide and a second diol moiety derived from cyclohexanedimethanol in a controlled ratio on at least one surface of a base layer, it is possible to exhibit excellent heat resistance and adhesion.
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公开(公告)号：US11964932B2
公开(公告)日：2024-04-23
申请号：US18003432
申请日：2022-05-20
发明人： Hee Il Chae , Ju-Sik Kang , Jeong Ho Park , Song Lee , Yu Mi Chang
IPC分类号： C07C29/141 , B01J31/22 , C07C31/27 , C07C45/50 , C08G63/199 , B01J21/18 , B01J23/46
CPC分类号： C07C31/278 , B01J31/2213 , C07C29/141 , C07C45/50 , C08G63/199 , B01J21/18 , B01J23/462 , B01J2531/82 , C07C2603/68 , C07C45/50 , C07C47/347 , C07C29/141 , C07C31/278
摘要： Provided are a tricyclodecane dimethanol composition, in which a ratio of structural isomers is controlled, and a preparation method thereof.
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公开(公告)号：US11926117B2
公开(公告)日：2024-03-12
申请号：US16344120
申请日：2017-11-24
发明人： Seol-Hee Lim , Sung-Gi Kim , So-Yeon Kim
CPC分类号： B29D7/01 , B32B27/08 , B32B27/20 , B32B27/36 , B32B37/153 , B32B38/0012 , C08J5/18 , C08L67/02 , B32B2038/0028 , B32B2307/306 , B32B2307/516 , B32B2307/736 , C08J2367/02 , C08J2467/02 , C08L2201/08 , C08L2203/16 , C08L2205/025 , C08L2205/03
摘要： The present invention relates to an MDO thermoresistant heat-shrinkable multilayer film of a copolymer polyester having excellent thermal resistance. In particular, the present invention provides an MDO thermoresistant heat-shrinkable multilayer film that includes multiple skin layers capable of improving thermal resistance formed on a substrate layer capable of providing high shrinkage, and simultaneously has excellent thermal resistance and high shrinkage properties through MD orientation instead of the conventional TD orientation method.
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公开(公告)号：US20240044051A1
公开(公告)日：2024-02-08
申请号：US18490393
申请日：2023-10-19
发明人： Boo-youn LEE , Sung-Gi KIM , Yoo Jin LEE
IPC分类号： D01F6/62 , C08G63/183 , C08G63/86 , C08K3/04 , C08K3/24 , C08K3/32 , D01D5/098 , D01F1/09 , D01F1/10
CPC分类号： D01F6/62 , C08G63/183 , C08G63/863 , C08K3/04 , C08K3/24 , C08K3/32 , D01D5/098 , D01F1/09 , D01F1/10 , D01F1/106 , C08K2003/329
摘要： The present invention relates to a polyester fiber, a preparation method thereof and a molded article prepared therefrom. The polyester fiber comprises a diol moiety derived from isosorbide in a specific amount and is formed into a polyester resin having a specific oligomer content, thereby providing a molded article having excellent saline water resistance, chemical resistance, light resistance and good knot strength, and capable of maintaining high transparency.
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公开(公告)号：US11884622B2
公开(公告)日：2024-01-30
申请号：US18003441
申请日：2022-05-20
发明人： Hee Il Chae , Ju-Sik Kang , Jeong Ho Park , Song Lee , Yu Mi Chang
IPC分类号： B01J21/18 , C07C7/177 , B01J23/46 , B01J31/24 , C07C29/141 , C07C29/84 , C07C31/27 , C07C45/50 , C08G63/16 , C08G63/85
CPC分类号： C07C7/177 , B01J21/18 , B01J23/462 , B01J31/24 , C07C29/141 , C07C29/84 , C07C31/278 , C07C45/505 , C08G63/16 , C08G63/85 , C07C2603/68
摘要： Provided are a tricyclodecane dimethanol composition which may be usefully applied to the preparation of a high heat resistant polyester by reducing the content of impurities, and a preparation method thereof.
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公开(公告)号：US20240002588A1
公开(公告)日：2024-01-04
申请号：US18247458
申请日：2021-09-14
发明人： Da-Young HWANG , Ha-Neul KIM , Yoo Jin LEE
IPC分类号： C08G63/183 , C08G63/199 , C08G63/19 , C08G63/86
CPC分类号： C08G63/183 , C08G63/199 , C08G63/19 , C08G63/863
摘要： In the present disclosure, it is possible to identify and select recycled bis-2-hydroxyethyl terephthalate of a certain quality or higher, and thus the quality of a polyester resin prepared using the recycled bis-2-hydroxyethyl terephthalate can be improved.
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公开(公告)号：US11518848B2
公开(公告)日：2022-12-06
申请号：US17262048
申请日：2019-07-08
发明人： Min A Park , Ji-Hyun Kim
IPC分类号： C08G63/199 , C08G63/183 , C08G63/85
摘要： A polyester resin that exhibits heat resistance and transparency by including at least dispiro[5.1.5.1]tetradecane-7,14-diol as a diol component, and a preparation method of this polyester resin are disclosed. The polyester resin is obtained by copolymerization of two or more glycols in addition to dispiro[5.1.5.1]tetradecane-7,14-diol and dicarboxylic acid component, which may include terephthalic acid. The diol component may include 1,4-cyclohexanedimethanol in a range from 30 to 50 mol % based on 100 mol % of the dicarboxylic acid and dispiro[5.1.5.1]tetradecane-7,14-diol in a range from 5 to 60 mol % based on 100 mol % of the dicarboxylic acid moiety and ethylene glycol.
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