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公开(公告)号：US20180002466A1
公开(公告)日：2018-01-04
申请号：US15543174
申请日：2016-09-09
Applicant: LG CHEM, LTD.
Inventor： Chan Hee LEE , Kwang Jin LEE , Hyun Min LEE , Kyung Seog YOUK
IPC: C08F214/06
CPC classification number: C08F214/06 , C08F2/24 , C08F218/08
Abstract: The present invention relates to a vinyl chloride-vinyl acetate copolymer, which may exhibit excellent tensile strength even during low-temperature processing, and a method of preparing the same. The copolymer according to the present invention may exhibit excellent tensile strength even during low-temperature processing by including a vinyl acetate-derived unit in a specific ratio and having a specific range of polydispersity index, for example, a polydispersity index of 2.1 to 2.4, at a degree of polymerization of 1,200 to 1,300. Thus, the vinyl chloride-vinyl acetate copolymer according to the present invention and the method of preparing the same may be easily applied to industries that need them, particularly, automotive industry or polyvinyl chloride resin industry.
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12.发明申请PREPARATION METHOD OF VINYL CHLORIDE POLYMER AND VINYL CHLORIDE POLYMER PREPARED THEREBY 有权氯乙烯聚合物及其制备的氯乙烯聚合物的制备方法公开(公告)号：US20160369018A1
公开(公告)日：2016-12-22
申请号：US15121683
申请日：2015-09-14
Applicant: LG CHEM, LTD.
Inventor： Kyung Seog YOUK , Hyun Min LEE , Chan Hee LEE , Heung Kwon BAE , Kwang Jin LEE , Kyung Hyun KIM , Jung Rae LEE
IPC: C08F114/06
CPC classification number: C08F114/06 , C08F8/32 , C08F8/40 , C08F14/06
Abstract: The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability by restraining a dehydrochlorination reaction due to heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. According to the preparation method, the adding point of a modifier is controlled, and a vinyl chloride polymer markedly restraining the generation of dehydrochloric acid due to heat or ultraviolet rays may be prepared. Therefore, the preparation method of the vinyl chloride polymer via the emulsion polymerization and the vinyl chloride polymer prepared thereby in the present invention may be readily applied to industries requiring the vinyl chloride polymer such as industries concerning a vinyl chloride resin and a molded article.
Abstract translation: 本发明涉及通过抑制由于热或紫外线引起的脱氯化氢反应而制备具有良好热稳定性的氯乙烯聚合物的方法和由此制备的氯乙烯聚合物。 根据制备方法，可以控制改性剂的添加点，并且可以制备显着抑制由于热或紫外线而产生脱盐酸的氯乙烯聚合物。 因此，本发明中通过乳液聚合制备的氯乙烯聚合物和由其制备的氯乙烯聚合物的制备方法可以容易地应用于需要氯乙烯聚合物的行业，例如涉及氯乙烯树脂和模制品的行业。
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Patent Agency Ranking
公开(公告)号：US20220220232A1
公开(公告)日：2022-07-14
申请号：US17607306
申请日：2020-09-25
Applicant: LG CHEM, LTD.
Inventor： Se Woong LEE , Heung Kwon BAE , Hyun Min LEE , Kyung Seog YOUK , Joong Chul LIM , Jung Rae LEE
Abstract: The present invention provides a method for preparing a vinyl chloride-based polymer, the method including (1) polymerizing a vinyl chloride-based monomer in the presence of a vinyl chloride-based first seed particle, a vinyl chloride-based second seed particle, and an emulsifier and (2) separating, after the polymerizing, a first vinyl chloride-based polymer and a second vinyl chloride-based polymer which are in a particulate form, wherein the separated first vinyl chloride-based polymer is dried using a fluid bed dryer (FBD), and the first vinyl chloride-based polymer has a smaller average particle diameter (D50) than the second vinyl chloride-based polymer, and two kinds of polymers having different physical properties may be prepared through a single manufacturing process.
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14.发明申请公开(公告)号：US20180134822A1
公开(公告)日：2018-05-17
申请号：US15572688
申请日：2016-11-15
Applicant: LG CHEM, LTD.
Inventor： Kyung Seog YOUK , Heung Kwon BAE , Hyun Min LEE , Jung Rae LEE
Abstract: The present invention relates to a vinyl chloride-based polymer, a method of preparing the same, and a plastisol including the vinyl chloride-based polymer. The vinyl chloride-based polymer according to the present invention may exhibit high viscosity characteristics in a low shear region by having particle size distribution characteristics, in which particles having a relatively small particle diameter and particles having a relatively large particle diameter are distributed at a specific ratio, and may exhibit low viscosity characteristics in a high shear region due to small increases in viscosity and stress as shear rate increases, and thus, the vinyl chloride-based polymer may be easily used in a spray coating process.Therefore, the vinyl chloride-based polymer according to the present invention and the method of preparing the same may be easily applied to industries that need them, for example, vinyl chloride-based resin industry for paste processing.
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公开(公告)号：US20180057676A1
公开(公告)日：2018-03-01
申请号：US15565218
申请日：2016-09-29
Applicant: LG CHEM, LTD.
Inventor： Heung Kwon BAE , Kyung Seog YOUK , Jung Rae LEE , Hyun Min LEE
IPC: C08L27/06
Abstract: The present invention relates to a vinyl chloride-based polymer showing high viscosity properties in a low shear region and showing viscosity and stress decreasing properties in line with the increase of a shear rate, a method for preparing the same, and a plastisol comprising the same. Since the vinyl chloride-based polymer comprises a saponified emulsifier in a specific ratio, high viscosity properties may be shown in a low shear region, and Bingham fluid flow properties may be shown, by which viscosity and stress decrease in line with the increase of a shear rate.
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公开(公告)号：US20160340452A1
公开(公告)日：2016-11-24
申请号：US15111407
申请日：2015-09-14
Applicant: LG CHEM, LTD.
Inventor： Kyung Seog YOUK , Kyung Hyun KIM , Hyun Min LEE , Yong Jin KIM , Heung Kwon BAE , Jung Rae LEE
IPC: C08F114/06
CPC classification number: C08F114/06 , C08F2/18 , C08F2/20 , C08F2/44 , C08F4/34 , C08F6/003 , C08F6/24 , C08F14/06 , C08L27/06
Abstract: The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. In the preparation method, a modifier is introduced at the end of a polymerization process to impart the vinyl chloride polymer with high thermal stability without inducing modification. Therefore, the generation of dehydrochlorination due to heat or ultraviolet rays may be markedly restrained, thermal stability may be improved, and discoloration or the modification of physical properties may be prevented in the vinyl chloride polymer thus prepared.
Abstract translation: 本发明涉及由于通过热或紫外线的脱氯化氢的限制以及由此制备的氯乙烯聚合物制备具有良好的热稳定性的氯乙烯聚合物的方法。 在制备方法中，在聚合过程结束时引入改性剂以使氯乙烯聚合物具有高热稳定性而不引起改性。 因此，可以显着抑制由于热或紫外线引起的脱氯化氢的产生，可以提高热稳定性，并且在由此制备的氯乙烯聚合物中可以防止变色或物理性质的改变。
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公开(公告)号：US20160311943A1
公开(公告)日：2016-10-27
申请号：US15101349
申请日：2015-09-14
Applicant: LG CHEM, LTD.
Inventor： Kyung Seog YOUK , Heung Kwon BAE , Jung Rae LEE , Kyung Hyun KIM , Hyun Min LEE
IPC: C08F14/06
CPC classification number: C08F14/06 , C08F2/001 , C08F2/02 , C08F2/44 , C08F4/38 , C08F6/006 , C08F114/06 , C08L27/06
Abstract: The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. In the preparation method through bulk polymerization, a modifier is introduced to a polymerization process to impart the vinyl chloride polymer with high thermal stability without inducing modification. Therefore, the preparation method via the bulk polymerization of the vinyl chloride polymer and the vinyl chloride polymer prepared thereby according to the present invention may be readily applied to industries requiring thereof such as industries concerning a vinyl chloride resin and the molded article thereof.
Abstract translation: 本发明涉及由于通过热或紫外线的脱氯化氢的限制以及由此制备的氯乙烯聚合物制备具有良好的热稳定性的氯乙烯聚合物的方法。 在通过本体聚合的制备方法中，将改性剂引入到聚合方法中，以赋予具有高热稳定性的氯乙烯聚合物，而不引起改性。 因此，通过根据本发明制备的氯乙烯聚合物和由其制备的氯乙烯聚合物的本体聚合的制备方法可以容易地应用于需要其的行业，例如氯乙烯树脂及其模塑制品。
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