公开(公告)号：US20140094556A1

公开(公告)日：2014-04-03

申请号：US14115707

申请日：2012-12-06

申请人： LG CHEM, LTD.

发明人： Bong Keun Ahn ,  Eun Seon Park ,  Keun Hoon Yoo ,  Joo Byung Chai ,  Yu Sung Jung ,  Won Deok Han ,  Tae Young Jeon

IPC分类号： C08L51/04

CPC分类号： C08L51/04 ,  C08F279/04 ,  C08L25/12 ,  C08L55/02

摘要： Disclosed are a thermal stabilizer-free thermoplastic resin composition and a method of preparing the same. The thermal stabilizer-free thermoplastic resin composition has superior impact resistance, falling ball impact resistance and gloss without using a separate thermal stabilizer. Particularly, the thermal stabilizer-free thermoplastic resin composition improves production efficiency when applied to a squeezing dehydrator because the thermoplastic resin composition is prepared without using a drying process.

摘要翻译： 公开了一种不含热稳定剂的热塑性树脂组合物及其制备方法。 无热稳定剂的热塑性树脂组合物在不使用单独的热稳定剂的情况下具有优异的抗冲击性，降低球的抗冲击性和光泽。 特别是无热稳定剂的热塑性树脂组合物由于在不使用干燥方法的情况下制备热塑性树脂组合物，因此提高了生产效率。

公开(公告)号：US11299615B2

公开(公告)日：2022-04-12

申请号：US17047374

申请日：2019-09-05

申请人： LG CHEM, LTD.

发明人： Jeong Su Choi ,  Keun Hoon Yoo ,  Won Seok Lee ,  Roo Da Lee ,  Jong Ju Lee

IPC分类号： C08L51/04 ,  C08L25/14 ,  C08L33/08

摘要： The present invention provides a thermoplastic resin composition which includes: A-1) a first copolymer including a first conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, and an aromatic vinyl-based monomer unit, wherein the first conjugated diene-based polymer has an average particle diameter of 0.05 to 0.2 μm; A-2) a second copolymer including a second conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, and an aromatic vinyl-based monomer unit, wherein the second conjugated diene-based polymer has an average particle diameter of 0.23 to 0.5 μm; B) a third copolymer including an alkyl (meth)acrylate-based monomer unit and an aromatic vinyl-based monomer unit; and C) a plasticizer having a viscosity of 700 to 10,000 cP, wherein the plasticizer is included at 0.3 to 5 wt %. The thermoplastic resin composition is excellent in all of transparency, impact resistance, and flowability.

公开(公告)号：US10066041B2

公开(公告)日：2018-09-04

申请号：US15510654

申请日：2016-06-14

申请人： LG CHEM, LTD.

发明人： Bong Keun Ahn ,  Hyung Seop Shim ,  Keun Hoon Yoo

IPC分类号： C08F279/02 ,  C08L25/12

摘要： The present invention relates to a thermoplastic resin, a method of preparing the same, and a thermoplastic resin composition including the same. A thermoplastic resin having superior latex stability and thermal stability and generating a small amount of gas during processing, and a method of preparing the thermoplastic resin are provided. In addition, a thermoplastic resin composition having superior mechanical properties, surface gloss, whiteness, gloss after retention, and heat discoloration after retention and a small content of residual total volatile organic compounds (TVOC), due to inclusion of the thermoplastic resin, is provided.

公开(公告)号：US09932472B2

公开(公告)日：2018-04-03

申请号：US14893898

申请日：2014-07-22

申请人： LG CHEM, LTD.

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

IPC分类号： C08L51/04 ,  C08F279/04 ,  C08F236/06

CPC分类号： C08L51/04 ,  C08F236/06 ,  C08F279/04 ,  C08F220/62

摘要： Disclosed is a method of preparing a rubber-reinforced thermoplastic resin. According to the present invention, a graft copolymer comprising a large-particle-size rubber polymer obtained by welding polymerization-heat-control-type small particles and a reactive emulsifier or a mixed emulsifier comprising a reactive emulsifier and a non-reactive emulsifier is prepared, and a rubber-reinforced thermoplastic resin comprising the same may have enhanced mechanical properties, thermal stability, surface visibility and gloss.

公开(公告)号：US09920153B2

公开(公告)日：2018-03-20

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 ,  C08F279/04 ,  C08L25/12 ,  C08L35/06

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.

公开(公告)号：US09834645B2

公开(公告)日：2017-12-05

申请号：US14911455

申请日：2015-07-23

申请人： LG CHEM, LTD.

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

IPC分类号： C08L51/04 ,  C08G81/02 ,  C08J5/00

CPC分类号： C08G81/024 ,  C08F220/18 ,  C08F279/02 ,  C08G81/027 ,  C08J5/00 ,  C08L33/12 ,  C08L51/04

摘要： Provided are a thermoplastic resin composition having high environmental stress crack resistance (ESCR) as well as excellent impact resistance and transparency and a thermoplastic resin molded article prepared therefrom. The thermoplastic resin composition includes a graft copolymer (A), in which a (meth)acrylic acid ester, a vinyl cyan-based compound, and an aromatic vinyl compound are graft polymerized with a conjugated diene-based rubber latex; and a copolymer (B) of a (meth)acrylic acid ester-aromatic vinyl compound-vinyl cyan-based compound in a weight ratio of 35:65 to 70:30. A difference in refractive indices of the graft copolymer (A) and the copolymer (B) of the (meth)acrylic acid ester-aromatic vinyl compound-vinyl cyan-based compound is less than 0.003 when irradiated with light having a wavelength of 450 nm to 680 nm, and a melt index is 4.0 g/10 min or less when the melt index is measured in accordance with ASTM D1238.

公开(公告)号：US09790356B2

公开(公告)日：2017-10-17

申请号：US15038402

申请日：2015-10-08

申请人： LG CHEM, LTD.

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

IPC分类号： C08L51/04 ,  C08L25/12 ,  C08F6/22 ,  C08F279/04 ,  C08F2/38

CPC分类号： C08L25/12 ,  C08F2/38 ,  C08F6/22 ,  C08F279/04 ,  C08L2205/03 ,  C08L2207/04 ,  C08L55/02 ,  C08L39/00 ,  C08L5/08

摘要： The present invention relates to a method of preparing a thermoplastic resin. In accordance with the present invention, provided is a thermoplastic resin having superior antibiosis and melt-kneadability prepared through preparation of a graft copolymer latex and coagulation of the graft copolymer latex with a specific antimicrobial agent, and a method of preparing the thermoplastic resin to prepare a thermoplastic resin composition including the thermoplastic resin.

公开(公告)号：US11434358B2

公开(公告)日：2022-09-06

申请号：US16646127

申请日：2019-05-14

申请人： LG CHEM, LTD.

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

IPC分类号： C08F251/02 ,  C08L33/12 ,  C08F220/14 ,  C08F279/02 ,  C08L47/00

摘要： The present invention relates to a matrix copolymer including a cellulose nanocrystal derivative, an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; a graft copolymer including a cellulose nanocrystal derivative, a conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; and a thermoplastic resin composition including at least one thereof. In accordance with the present invention, provided is a thermoplastic resin composition having improved processability, impact strength, tensile strength and chemical resistance while maintaining transparency.

公开(公告)号：US11421103B2

公开(公告)日：2022-08-23

申请号：US16619435

申请日：2018-11-09

申请人： LG CHEM, LTD.

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

IPC分类号： C08L51/04 ,  C08J3/12

摘要： The present invention relates to a method for preparing a graft copolymer powder, which includes: performing emulsion polymerization of a conjugated diene polymer, an aromatic vinyl monomer and an alkyl (meth)acrylate monomer to prepare a graft copolymer latex; coagulating the graft copolymer latex; aging the coagulated graft copolymer; preparing a wet powder of the graft copolymer by dehydrating the aged graft copolymer; and adding poly(oxyalkylene)diglycolic acid to the wet powder of the graft copolymer.

公开(公告)号：US10196511B2

公开(公告)日：2019-02-05

申请号：US15545247

申请日：2016-12-01

申请人： LG CHEM, LTD.

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

IPC分类号： C08L33/20 ,  C08L33/08 ,  C08L33/10 ,  C08L51/04 ,  A01N59/16 ,  C08L33/12 ,  C08J5/00 ,  C08L51/06

摘要： The present invention relates to a thermoplastic resin composition and a molded article including the same. More particularly, the present invention relates to a thermoplastic resin composition including 100 parts by weight of a base resin that includes an acrylic graft copolymer and an acrylic non-graft copolymer; and greater than 0.3 parts by weight and less than 1.2 parts by weight of a zinc-based antimicrobial agent, and a molded article including the same, wherein the zinc-based antimicrobial agent has an average particle diameter of greater than 3 μm to 30 μm. In accordance with the present invention, a thermoplastic resin composition providing superior transparency and excellent initial antimicrobial activity and persistent antimicrobial activity while providing the same mechanical properties as existing resin compositions, and a molded article including the same are provided.