公开(公告)号：US10941289B2

公开(公告)日：2021-03-09

申请号：US16462190

申请日：2018-09-04

申请人： LG CHEM, LTD.

发明人： Hyung Seop Shim ,  Won Seok Lee ,  Seok Goo Jang ,  Sang Hoo Park ,  Hye Jeong Ok ,  Jeong Su Choi ,  Keun Hoon Yoo ,  Roo Da Lee ,  Ho Hoon Kim ,  Jong Ju Lee

IPC分类号： C08F279/06 ,  C08J3/22 ,  C08K3/36 ,  C08K9/06 ,  C08L33/06 ,  C08L51/04

摘要： A graft copolymer, a thermoplastic resin composition including the graft copolymer, and a method of preparing the thermoplastic resin composition are described herein. A graft copolymer having a shell in which silica modified with a specific compound is dispersed within a specific content range, a thermoplastic resin composition including the graft copolymer, and a method of preparing the thermoplastic resin composition are also described herein. Since silica modified with a specific compound is dispersed in the periphery of rubber particles, that is, in the shell of the graft copolymer, the dispersibility of the graft copolymer may be improved. Therefore, the graft copolymer may have transparency equal to or better than a conventional graft copolymer. In addition, compared to a resin composition having an equivalent rubber content, the thermoplastic resin composition described herein may have excellent physical properties, such as impact strength and tensile strength.

公开(公告)号：US10703896B2

公开(公告)日：2020-07-07

申请号：US15779815

申请日：2017-08-30

申请人： LG CHEM, LTD.

发明人： Jeong Su Choi ,  Won Seok Lee ,  Seok Goo Jang ,  Roo Da Lee ,  Sang Hoo Park ,  Ho Hoon Kim ,  Hyung Seop Shim ,  Keun Hoon Yoo ,  Hye Jeong Ok

IPC分类号： C08L51/04 ,  C08F279/02 ,  C08L33/12 ,  C08F6/00 ,  C08F6/22 ,  C08F220/14

摘要： The present disclosure relates to a transparent thermoplastic resin and a method of preparing the same. More particularly, the present disclosure provides a transparent thermoplastic resin that provides superior transparency without generation of flow marks on a surface, and does not exhibit cracks or a whitening phenomenon during processing due to superior whitening resistance, particularly superior whitening resistance at low temperature, a method of preparing the transparent thermoplastic resin, and the like.

公开(公告)号：US10329416B2

公开(公告)日：2019-06-25

申请号：US15577967

申请日：2017-03-02

申请人： LG CHEM, LTD.

发明人： Won Seok Lee ,  Jeong Su Choi ,  Keun Hoon Yoo ,  Seok Goo Jang ,  Roo Da Lee ,  Sang Hoo Park ,  Ho Hoon Kim ,  Hyung Seop Shim

IPC分类号： C08L33/12 ,  C08L37/00 ,  C08L51/04 ,  C08F279/02 ,  C08F220/14

摘要： The present disclosure relates to a thermoplastic resin composition and a molded article manufactured from the same. More particularly, the present disclosure relates to a thermoplastic resin composition including (A) a graft copolymer prepared by graft-copolymerizing a conjugated diene rubber, a (meth)acrylic acid alkyl ester compound, a methylene butyrolactone compound, and an aromatic vinyl compound; and (B) a copolymer prepared by copolymerizing a (meth)acrylic acid alkyl ester compound, an aromatic vinyl compound, and a vinyl cyanide compound, and a molded article manufactured from the thermoplastic resin composition. In accordance with the present disclosure, a thermoplastic resin composition having superior heat resistance and transparency and a molded article manufactured from the same are provided.

公开(公告)号：US11267964B2

公开(公告)日：2022-03-08

申请号：US16630805

申请日：2018-09-20

申请人： LG CHEM, LTD.

发明人： Jeong Su Choi ,  Won Seok Lee ,  Roo Da Lee ,  Jong Ju Lee ,  Keun Hoon Yoo ,  Seok Goo Jang ,  Sang Hoo Park ,  Hye Jeong Ok ,  Ho Hoon Kim ,  Hyung Seop Shim

IPC分类号： C08L51/04 ,  C08L33/12

摘要： The present invention relates to a thermoplastic resin composition showing excellent transparency and whitening resistance. The thermoplastic resin composition of the present invention comprises (A) a graft copolymer having a multilayer structure and (B) a thermoplastic copolymer, wherein the graft copolymer having a multilayer structure (A) comprises a core of a conjugated diene-based rubber latex having a weight average particle diameter of 500 Å to 2,000 Å; an intermediate layer; and a graft layer. The glass transition temperature of the intermediate layer is 40° C. or less, the glass transition temperature of the graft layer is 80° C. or more, and the refractive index difference between the graft copolymer (A) and the thermoplastic copolymer (B) is less than 0.01.

公开(公告)号：US10689473B2

公开(公告)日：2020-06-23

申请号：US16083857

申请日：2018-01-02

申请人： LG CHEM, LTD.

发明人： Seok Goo Jang ,  Jeong Su Choi ,  Won Seok Lee ,  Roo Da Lee ,  Sang Hoo Park ,  Hye Jeong Ok ,  Ho Hoon Kim ,  Hyung Seop Shim ,  Keun Hoon Yoo

IPC分类号： C08L25/12 ,  C08F279/02 ,  C08F220/14 ,  C08F222/34 ,  C08F212/04 ,  C08F2/24 ,  C08F2/38 ,  C08F2/44 ,  C08F2/26 ,  C08L33/12 ,  C08L55/02

摘要： The present invention relates to a graft copolymer having excellent thermal stability, a method of preparing the graft copolymer, a thermoplastic resin composition including the graft copolymer, and a molded part including the thermoplastic resin composition. According to the present invention, since the thermoplastic resin composition of the present invention includes the graft copolymer having excellent thermal stability, the thermoplastic resin composition and the molded part manufactured using the thermoplastic resin composition have excellent physical properties, such as impact strength, fluidity, and transparency. Furthermore, the degree of discoloration that may occur when the resin composition or the molded part is allowed to stay in an injection molding machine or stay at a high temperature for a long period of time may be reduced.

公开(公告)号：US11312852B2

公开(公告)日：2022-04-26

申请号：US16463830

申请日：2018-10-02

申请人： LG CHEM, LTD.

发明人： Sang Hoo Park ,  Seok Goo Jang ,  Hye Jeong Ok ,  Ho Hoon Kim ,  Hyung Seop Shim ,  Jeong Su Choi ,  Keun Hoon Yoo ,  Won Seok Lee ,  Roo Da Lee ,  Jong Ju Lee

IPC分类号： C08F220/14 ,  C08L33/06 ,  C08F279/06 ,  C08J3/07 ,  C08K5/3472

摘要： The present invention relates to a method for preparing a graft copolymer complex, a copolymer complex prepared by the method, and a thermoplastic resin composition comprising the copolymer complex, wherein the method comprises emulsion-polymerizing a conjugated diene-based polymer, an aromatic vinyl-based monomer, and an alkyl (meth)acrylate-based monomer to prepare a graft copolymer latex; and adding an imidazole-based ionic compound to the graft copolymer latex and coagulating the same.

公开(公告)号：US10316179B2

公开(公告)日：2019-06-11

申请号：US15541001

申请日：2016-11-09

申请人： LG CHEM, LTD.

发明人： Roo Da Lee ,  Jeong Su Choi ,  Keun Hoon Yoo ,  Won Seok Lee ,  Seok Goo Jang ,  Sang Hoo Park ,  Ho Hoon Kim ,  Hyung Seop Shim

IPC分类号： C08F257/02 ,  C08L51/00 ,  C08L53/02 ,  C08F212/08 ,  C08F212/10 ,  C08F293/00 ,  C08L25/12 ,  C08L53/00

摘要： The present invention relates to a transparent thermoplastic resin. More particularly, the present invention relates to a transparent thermoplastic resin, including a random copolymerization block prepared by polymerizing 50 to 80% by weight of an aromatic vinyl compound, 10 to 30% by weight of a vinyl cyanide compound, and 0 to 15% by weight of (meth)acrylic acid alkyl ester; and an aromatic vinyl compound block prepared by polymerizing 1 to 10% by weight of an aromatic vinyl compound, a transparent thermoplastic resin composition including the transparent thermoplastic resin, and methods of preparing the aromatic vinyl compound and transparent thermoplastic resin.

公开(公告)号：US09926444B2

公开(公告)日：2018-03-27

申请号：US14903485

申请日：2015-10-15

申请人： LG CHEM, LTD.

发明人： Jeong Su Choi ,  Min Cheol Ju ,  Min Seung Shin ,  Sung Won Hong ,  In Soo Kim ,  Ho Hoon Kim ,  Sang Hoo Park ,  Keun Hoon Yoo ,  Roo Da Lee ,  Won Seok Lee ,  Hyung Sub Lee ,  Seok Goo Jang

IPC分类号： C08L51/04 ,  C08L33/12 ,  C08L25/14

CPC分类号： C08L33/12 ,  C08F6/22 ,  C08F279/02 ,  C08F279/06 ,  C08L25/14 ,  C08L33/04 ,  C08L51/04 ,  C08F220/14 ,  C08F212/08 ,  C08F220/44

摘要： Disclosed are a thermoplastic resin composition and a method of preparing the same. More particularly, the present invention relates to a thermoplastic resin composition including 10 to 90% by weight of a graft copolymer resin coagulated by an organic acid or an organic acid salt; and 90 to 10% by weight of a non-graft copolymer resin and having a moist-heat characteristic of 20 or less, wherein a refractive index difference between the graft copolymer resin and the non-graft copolymer resin is less than 0.01, a method of preparing the same, and a molded product comprising the same. According to the present disclosure, provided are a thermoplastic resin composition having superior overall property balance, color, and transparency, and being applicable to products that are exposed to high-temperature water or should be sterilized, due to excellent moist-heat resistance thereof, a method of preparing the same, and a molded product comprising the same.

公开(公告)号：US20160096957A1

公开(公告)日：2016-04-07

申请号：US14427987

申请日：2014-06-23

申请人： LG CHEM, LTD.

发明人： Keun Hoon Yoo ,  Bong Keun Ahn ,  Dae Young Kim

IPC分类号： C08L51/04

CPC分类号： C08F279/04 ,  C08L25/12 ,  C08L35/06 ,  C08L55/02

摘要： Disclosed are a method of preparing a thermoplastic resin composition having superior surface clearness and gloss. More particularly, the present invention relates to a method of preparing a superior thermoplastic resin composition which has superior surface clearness and superior gloss and may prevent mold deposition during a high speed injection process, by using a reactive emulsifier during emulsion polymerization of rubber latex composed of polybutadiene, preparing resin latex using a hydrophobic initiator during graft copolymerization of rubber latex, an aromatic vinyl monomer, and a vinyl cyan monomer, compression dehydrating a moisture content to less than 10% using a compression type dehydrator after agglomerating the resin latex, and performing a wet powder extrusion process.

摘要翻译： 公开了一种制备具有优异表面清洁度和光泽度的热塑性树脂组合物的方法。 更具体地说，本发明涉及一种制备优异的热塑性树脂组合物的方法，其具有优异的表面清洁度和优异的光泽度，并且可以防止高速注射过程中的模具沉积，在乳液聚合反应乳化剂中使用反应性乳化剂， 聚丁二烯，在橡胶胶乳，芳族乙烯基单体和乙烯基青色单体的接枝共聚过程中使用疏水性引发剂制备树脂胶乳，在使树脂胶乳聚结后，使用压缩型脱水机将水分含量压缩至小于10％，并进行 湿粉末挤出工艺。

公开(公告)号：US08927631B2

公开(公告)日：2015-01-06

申请号：US14183204

申请日：2014-02-18

申请人： LG Chem, Ltd

发明人： Jeong Su Choi ,  Won Seok Lee ,  Seok Goo Jang ,  Roo Da Lee ,  Sang Hoo Park ,  Keun Hoon Yoo

IPC分类号： C08K5/527 ,  C08L33/12

CPC分类号： C08L33/16 ,  C08F220/14 ,  C08K5/005 ,  C08K5/527 ,  C08L9/00 ,  C08L55/02 ,  C08F212/08 ,  C08F220/44

摘要： Disclosed are a transparent thermoplastic resin composition and a molded article prepared therefrom. More particularly, disclosed are a transparent thermoplastic resin composition comprising A) 100 parts by weight of a rubber-reinforced thermoplastic transparent resin, and B) 0.01 to 2 parts by weight of a dihydrocarbyl pentaerythritol diphosphite wherein the A) rubber-reinforced thermoplastic transparent resin is prepared by polymerizing 5 to 60% by weight of a conjugated diene rubber, 20 to 70% by weight of a methacrylic acid alkyl ester monomer or an acrylic acid alkyl ester monomer, 8 to 50% by weight of an aromatic vinyl monomer and 0 to 20% by weight of a vinyl cyanide monomer, and a molded article prepared therefrom.

摘要翻译： 公开了透明热塑性树脂组合物和由其制备的模塑制品。 更具体地，公开了一种透明热塑性树脂组合物，其包含A）100重量份的橡胶增强的热塑性透明树脂，和B）0.01至2重量份的二烃基季戊四醇二亚磷酸酯，其中A）橡胶增强的热塑性透明树脂 通过聚合5至60重量％的共轭二烯橡胶，20至70重量％的甲基丙烯酸烷基酯单体或丙烯酸烷基酯单体，8至50重量％的芳族乙烯基单体和0 至20重量％的乙烯基氰单体和由其制备的模塑制品。