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公开(公告)号：US11952443B2
公开(公告)日：2024-04-09
申请号：US17265133
申请日：2019-10-30
申请人： LG CHEM, LTD.
发明人： Yang Jun Jeon , Hyun Min Lee , Hyun Kyou Ha , Kun Ji Kim , Kwang Jin Lee , Jin Hyuck Ju , Jae Hyun Park
CPC分类号： C08F14/06 , C08K3/26 , C08K2201/019
摘要： The present disclosure relates to a composition for preparing a vinyl chloride-based polymer and a method of preparing a vinyl chloride-based polymer using the same, and provides the composition giving excellent productivity for preparing a vinyl chloride-based polymer includes while maintaining excellent foaming and viscosity properties of a plastisol including the prepared vinyl chloride-based polymer, by including a pH regulator composed of a carbonate-based metal salt, and a transition metal catalyst in the composition, and controlling an amount of the transition metal catalyst, and controlling an amount of a reducing agent such that a trace amount or none of the reducing agent is included, and the method of preparing a vinyl chloride-based polymer using the same.
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公开(公告)号：US20240018321A1
公开(公告)日：2024-01-18
申请号：US18028295
申请日：2021-12-17
申请人： LG Chem, Ltd.
发明人： Kwangin Shin , Jin Hyuck Ju , Hyungki Yoon , Taebin Ahn , Dong Hoon Park
CPC分类号： C08J9/0052 , C08J3/075 , C08J3/12 , C08J3/245 , C08J2333/02 , C08J9/16 , C08J2203/14 , C08J2203/22 , C08J9/141
摘要： The present disclosure relates to a method for preparing a super absorbent polymer. More specifically, the above method performs a polymerization reaction of a monomer in the presence of an aqueous dispersion of hydrophobic particles, and thus a super absorbent polymer having an improved absorption rate can be prepared without deterioration in absorption properties.
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公开(公告)号：US20210309769A1
公开(公告)日：2021-10-07
申请号：US17265133
申请日：2019-10-30
申请人： LG CHEM, LTD.
发明人： Yang Jun Jeon , Hyun Min Lee , Hyun Kyou Ha , Kun Ji Kim , Kwang Jin Lee , Jin Hyuck Ju , Jae Hyun Park
摘要： The present disclosure relates to a composition for preparing a vinyl chloride-based polymer and a method of preparing a vinyl chloride-based polymer using the same, and provides the composition giving excellent productivity for preparing a vinyl chloride-based polymer includes while maintaining excellent foaming and viscosity properties of a plastisol including the prepared vinyl chloride-based polymer, by including a pH regulator composed of a carbonate-based metal salt, and a transition metal catalyst in the composition, and controlling an amount of the transition metal catalyst, and controlling an amount of a reducing agent such that a trace amount or none of the reducing agent is included, and the method of preparing a vinyl chloride-based polymer using the same.
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公开(公告)号：US11760818B2
公开(公告)日：2023-09-19
申请号：US17265118
申请日：2019-10-30
申请人： LG CHEM, LTD.
发明人： Jae Hyun Park , Hyun Min Lee , Hyun Kyou Ha , Kun Ji Kim , Kwang Jin Lee , Yang Jun Jeon , Jin Hyuck Ju
IPC分类号： C08F114/06 , C08K3/26
CPC分类号： C08F114/06 , C08K3/26 , C08K2003/262
摘要： The present disclosure provides a method of preparing a vinyl chloride-based polymer, and the method provides excellent productivity while having reduced amount of a volatile organic compound generated so as to provide the vinyl chloride-based polymer suitable for an eco-friendly material, and improved foaming and viscosity properties of a plastisol including the prepared polymer, by adding a carbonate-based metal salt and a transition metal catalyst together, and controlling input time and amount of the transition metal catalyst.
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公开(公告)号：US11505629B2
公开(公告)日：2022-11-22
申请号：US16962747
申请日：2019-04-29
申请人： LG CHEM, LTD.
发明人： Seong Yong Ahn , Kun Ji Kim , Se Woong Lee , Jin Hyuck Ju , Hyun Kyou Ha
IPC分类号： C08F114/06 , C08F2/18 , C08L27/06 , C08F2/00
摘要： The present invention relates to a vinyl chloride polymer and a production method thereof. More specifically, the present invention provides a vinyl chloride polymer having a polydispersity index of 2.0 to 2.3 and a porosity of 60% or greater and a production method thereof in which a vinyl chloride polymerization seed having a conversion rate of 5-20% is first prepared through preliminary polymerization and then a vinyl chloride monomer is introduced into the vinyl chloride polymerization seed to polymerize (main polymerization) a vinyl chloride polymer.
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6.发明授权公开(公告)号：US10889668B2
公开(公告)日：2021-01-12
申请号：US15752846
申请日：2017-03-29
申请人： LG CHEM, LTD.
发明人： Yang Jun Jeon , Hyun Kyou Ha , Joong Chul Lim , Jin Hyuck Ju , Min Jeong Kang
摘要： The present invention provides a method for preparing a vinyl chloride-based polymer and a vinyl chloride-based polymer prepared thereby, the method comprising a step for performing suspension polymerization of a monomer for preparing a vinyl chloride-based polymer in the presence of a polymerization initiator, a dispersant, and water soluble cellulose ether, wherein the dispersant includes a mixture of two or more kinds of polyvinyl alcohol having different degrees of saponification, and the mole average degree of saponification of the polyvinyl mixture is from 76 mol % to 80 mol %, and the water soluble cellulose ether has a gel point of 60° C. to 90° C. and is added before the initiation of polymerization or at a time in which the polymerization conversion rate is 70% or less.
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公开(公告)号：US20240139712A1
公开(公告)日：2024-05-02
申请号：US18276810
申请日：2022-11-21
申请人： LG Chem, Ltd.
发明人： Jin Hyuck Ju , Hyungki Yoon , Kwangin Shin , Taebin Ahn
CPC分类号： B01J20/267 , B01J20/3021 , B01J20/3085 , B01J20/321 , B01J20/3219 , B01J20/327 , C08F2810/20
摘要： Provided is a method of preparing a superabsorbent polymer, more particularly, a method of preparing a superabsorbent polymer, in which a cationic polymer is included as a surface crosslinking agent, thereby achieving excellent general absorption-related properties. There is also provided a superabsorbent polymer including a base polymer powder including a crosslinked polymer of a water-soluble ethylenically unsaturated monomer having acidic groups, of which at least part is neutralized; and a surface-crosslinked layer which is formed on the base polymer powder by further crosslinking the crosslinked polymer via a surface crosslinking agent, wherein the surface-crosslinked layer includes a cationic polymer including quaternary ammonium ions in repeating units.
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公开(公告)号：US11952442B2
公开(公告)日：2024-04-09
申请号：US17251589
申请日：2019-10-28
申请人： LG CHEM, LTD.
发明人： Jin Hyuck Ju , Hyun Min Lee , Hyun Kyou Ha , Kun Ji Kim , Kwang Jin Lee , Yang Jun Jeon , Jae Hyun Park
CPC分类号： C08F14/06 , C08F2/18 , C08F2/22 , C08F2/44 , C08K3/26 , C08K3/30 , C08K2003/262 , C08K2003/265 , C08K2003/267
摘要： The present disclosure provides a method for preparing a vinyl chloride-based polymer, the method including a step of injecting an ionizable normal salt and polymerizing a vinyl chloride monomer in the presence of one or more emulsifiers and a polymerization initiator, wherein the ionizable normal salt includes a carbonate metal salt or a sulfite metal salt, and the ionizable normal salt is continuously injected in an amount of 70 to 1200 ppm based on the total weight of the vinyl chloride monomer when a polymerization conversion rate is in a range of 0% to 20%. The method capable of preparing a vinyl chloride-based polymer suitable as an eco-friendly material, while not affecting the rate of polymerization reaction and decreasing the generation amount of total volatile organic compounds by controlling the injection time, injection amount and kind of the ionizable normal salt, is provided.
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公开(公告)号：US10654954B2
公开(公告)日：2020-05-19
申请号：US15763726
申请日：2017-06-07
申请人： LG CHEM, LTD.
发明人： Jin Hyuck Ju , Hyun Kyou Ha , Joong Chul Lim , Yang Jun Jeon , Min Jeong Kang
IPC分类号： C08F14/06 , C08F114/06 , C08F2/38 , C08L27/06
摘要： The present invention relates to a method of preparing a vinyl chloride-based polymer, and more specifically, to a method comprising the steps of, (S1) preparing a mixture in which a first protective colloid auxiliary agent and a chain regulator are mixed; (S2) preparing a second protective colloid auxiliary agent including the chain regulator activated by stirring the mixture prepared in step (S1); and (S3) performing polymerization by adding a vinyl chloride-based monomer and a polymerization initiator in the presence of the second protective colloid auxiliary agent prepared in step (S2).
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10.发明授权公开(公告)号：US09434833B2
公开(公告)日：2016-09-06
申请号：US14774052
申请日：2014-09-30
申请人： LG CHEM, LTD.
发明人： Dong Kwon Lee , Kwang Hyon Kim , Bo Hee Park , Se Woong Lee , Jin Hyuck Ju
IPC分类号： C08K5/05 , B01J19/00 , C08K5/053 , C08F114/06 , C08F2/01 , C08F2/02 , C08F14/06 , C08F2/44 , B01J19/24
CPC分类号： C08K5/053 , B01J19/24 , B01J2219/24 , C08F2/01 , C08F2/02 , C08F2/44 , C08F14/06 , C08F114/06 , C08K5/05 , C08L27/06
摘要： Disclosed are a bulk PVC composition and a bulk PVC polymerization method using the same. According to the present invention, a bulk PVC composition that may effectively prevent generation of fine particles and scale (adhering to a reactor wall) during bulk polymerization and may be prepared without a post-treatment process of an antistatic agent added to easily isolate fine particles after bulk PVC polymerization, and a method and apparatus for polymerizing the same may be provided.
摘要翻译： 公开了使用该组合物的散装PVC组合物和本体PVC聚合方法。 根据本发明，可以在本体聚合期间可以有效地防止细小颗粒的产生和结垢（附着在反应器壁上）的块状PVC组合物，并且可以在没有加入抗静电剂的后处理工艺的情况下制备以容易地分离细颗粒 在聚氯乙烯聚合之后，可以提供其聚合方法和装置。
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