公开(公告)号：EP4006072A1

公开(公告)日：2022-06-01

申请号：EP20842999.3

申请日：2020-07-21

申请人： LG CHEM, LTD.

发明人： JEON, Tae Young ,  CHAI, Joo Byung ,  JUNG, Yu Sung ,  KIM, Jong Beom ,  PARK, Eun Seon

IPC分类号： C08F279/04 ,  C08F2/22 ,  C08F2/00 ,  C08F4/04

摘要： The present invention provides a method of preparing a graft copolymer, which comprises graft emulsion polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyanide-based monomer in the presence of an azo-based initiator having a solubility in water at 20 °C of 10 g/100 g or more and a 10-hour half-life decomposition temperature in water of 80 °C or less, wherein the graft emulsion polymerization is initiated at 45 to 55 °C. According to the present invention, a method of preparing a graft copolymer, which allows polymerization to be performed at low temperatures and ensures excellent polymerization stability, can be provided.

公开(公告)号：EP3243875B1

公开(公告)日：2020-11-18

申请号：EP16870955.8

申请日：2016-11-22

申请人： LG Chem, Ltd.

发明人： CHAI, Joo Byung ,  JUNG, Yu Sung ,  PARK, Eun Seon ,  JEON, Tae Young ,  KIM, Young Min ,  KIM, Jong Beom ,  KIM, Chang Sull

IPC分类号： C08F279/04 ,  C08L55/02 ,  C08L25/12 ,  C08L25/16 ,  C08L51/04

公开(公告)号：EP3623397A1

公开(公告)日：2020-03-18

申请号：EP19803989.3

申请日：2019-04-15

申请人： LG Chem, Ltd.

发明人： CHAI, Joo Byung ,  JUNG, Yu Sung ,  KIM, Jong Beom ,  KIM, Chang Sull ,  PARK, Eun Seon ,  JEON, Tae Young

IPC分类号： C08F279/04 ,  C08F2/24

摘要： Provided are a method for preparing a conjugated diene-based polymer and a method for preparing a graft copolymer including the same. The method for preparing a conjugated diene-based polymer includes enlarging a first conjugated diene-based polymer in multiple stages to prepare a second conjugated diene-based polymer, wherein the multi-stage enlargement includes a primary enlargement stage and a secondary enlargement stage, and a weight ratio of acids added in the primary enlargement stage and the secondary enlargement stage is 70:30 to 90:10. A graft copolymer prepared by the above-described method can be used to form a thermoplastic resin molded article excellent in all of plating characteristics, mechanical properties, surface characteristics, colorability, and processability.

公开(公告)号：EP3613783A1

公开(公告)日：2020-02-26

申请号：EP19747015.6

申请日：2019-01-30

申请人： LG CHEM, LTD.

发明人： KIM, Jong Beom ,  CHAI, Joo Byung ,  JUNG, Yu Sung ,  KIM, Chang Sull ,  PARK, Eun Seon ,  JEON, Tae Young ,  KIM, Young Min

IPC分类号： C08F279/04 ,  C08F8/34 ,  C08F8/02 ,  C08K5/01

摘要： The present invention relates to a method for preparing a graft copolymer, which includes polymerizing a first conjugated diene-based polymer, a second conjugated diene-based polymer, an aromatic vinyl-based monomer and a vinyl cyan-based monomer, wherein particle size distribution of the first conjugated diene-based polymer is 0.346 to 0.404, and particle size distribution of the second conjugated diene-based polymer is 0.196 to 0.304, a graft copolymer and a thermoplastic resin molded article.

公开(公告)号：EP3434732A1

公开(公告)日：2019-01-30

申请号：EP17888632.1

申请日：2017-12-15

申请人： LG Chem, Ltd.

发明人： JUNG, Yu Sung ,  CHAI, Joo Byung ,  KIM, Jong Beom ,  KIM, Chang Sull ,  PARK, Eun Seon ,  JEON, Tae Young ,  KIM, Young Min

IPC分类号： C08L55/02 ,  C08F279/04 ,  C08F2/24 ,  C08F4/40 ,  C08F2/38 ,  C08F2/44

摘要： The present invention relates to an ABS graft copolymer, a method of preparing the same, and a thermoplastic resin composition including the same. More specifically, when an ABS graft copolymer is prepared using emulsion polymerization, a phosphate ester-based reactive emulsifier capable of acting as a metal deactivator is added, thereby reducing the amount of undesired residues remaining in the ABS graft copolymer latex. As a result, thermal stability may be improved without adding a heat stabilizer. In addition, compatibility between the ABS graft copolymer and the aromatic vinyl compound-vinyl cyanide compound copolymer may be improved by the phosphate ester-based reactive emulsifier. Therefore, a final molded part having improved impact resistance, e.g., increased impact strength, and having improved appearance quality, e.g., excellent whiteness, while having excellent thermal stability may be prepared.

公开(公告)号：EP3401338A2

公开(公告)日：2018-11-14

申请号：EP17878656.2

申请日：2017-11-15

申请人： LG Chem, Ltd.

发明人： KIM, Jong Beom ,  CHAI, Joo Byung ,  JUNG, Yu Sung ,  KIM, Chang Sull ,  PARK, Eun Seon ,  JEON, Tae Young ,  KIM, Young Min

IPC分类号： C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08K5/37 ,  C08F6/22 ,  B29C45/00 ,  B29K25/00

CPC分类号： C08F212/10 ,  C08F2/22 ,  C08F2/38 ,  C08F6/22 ,  C08K5/37 ,  C08F212/12

摘要： The present invention relates to a method of preparing a thermoplastic resin, a method of preparing a thermoplastic resin composition including the same, and a method of manufacturing an injection-molded article using the thermoplastic resin composition. More particularly, the present invention relates to a method of preparing a thermoplastic resin capable of producing a high-molecular-weight SAN-based resin by using a mixture of mercaptan having superior reactivity and an alpha-alkyl styrene multimer having relatively low reactivity, which are mixed in a specific content, as a molecular weight modifier upon emulsion polymerization of an aromatic vinyl compound and a vinyl cyan compound.
By using a mixture of molecular weight modifiers having different reactivities according to the present invention, coagulation may be performed using a small amount of coagulant, productivity may be increased, and a molded article, which is manufactured using a thermoplastic resin, having excellent appearance characteristics along with superior mechanical strength, processability, or the like may be provided.

公开(公告)号：EP3363833A1

公开(公告)日：2018-08-22

申请号：EP17866372.0

申请日：2017-08-02

申请人： LG Chem, Ltd.

发明人： CHAI, Joo Byung ,  JEON, Tae Young ,  JUNG, Yu Sung ,  KIM, Jong Beom ,  KIM, Chang Sull ,  PARK, Eun Seon ,  KIM, Young Min

IPC分类号： C08F279/04 ,  C08J3/12 ,  C08L55/02 ,  C08L71/12

CPC分类号： C08F279/04 ,  C08J3/12 ,  C08L55/02 ,  C08L71/12

摘要： The present invention relates to a thermoplastic resin. More particularly, the present invention relates to a thermoplastic resin that is a graft copolymer having a seed-shell structure and includes a bimodal seed including a large-diameter rubbery polymer having an average particle diameter of greater than 2,000 Å and 3,500 Å or less and a small-diameter rubbery polymer having an average particle diameter of 500 Å to 2,000 Å; and an aromatic vinyl-vinyl cyan polymer shell, wherein the vinyl cyan compound is included in an amount of 5 % by weight to 28 % by weight based on a total weight of the aromatic vinyl-vinyl cyan polymer shell. In accordance with the present invention, a thermoplastic resin having a composition capable of improving graft density, and a thermoplastic resin composition capable of increasing dispersion and having high gloss due to inclusion of the thermoplastic resin are provided.

公开(公告)号：EP3260478A1

公开(公告)日：2017-12-27

申请号：EP16870995.4

申请日：2016-11-29

申请人： LG Chem, Ltd.

发明人： CHAI, Joo Byung ,  JUNG, Yu Sung ,  KIM, Jong Beom ,  KIM, Chang Sull ,  KIM, Young Min ,  PARK, Eun Seon ,  JEON, Tae Young

IPC分类号： C08F212/10 ,  C08F2/00 ,  C08F2/22

CPC分类号： C08F212/10 ,  C08F212/12 ,  C08F2800/20 ,  C08J3/16 ,  C08J2325/12 ,  C08L9/06 ,  C08F2/22 ,  C08F4/40 ,  C08F4/34

摘要： The present disclosure relates to a method of preparing a heat-resistant SAN resin. More particularly, the present disclosure provides a method of preparing a heat-resistant SAN resin enabling provision of superior productivity and improved heat resistance and fluidity without generation of odor during processing, and a heat-resistant SAN resin composition prepared by the method.

摘要翻译： 本公开涉及一种制备耐热SAN树脂的方法。 更具体地说，本公开提供了一种制备耐热SAN树脂的方法，该耐热SAN树脂能够提供优异的生产率和改善的耐热性和流动性而不会在加工过程中产生气味，以及由该方法制备的耐热SAN树脂组合物。

公开(公告)号：EP3243875A1

公开(公告)日：2017-11-15

申请号：EP16870955.8

申请日：2016-11-22

申请人： LG Chem, Ltd.

发明人： CHAI, Joo Byung ,  JUNG, Yu Sung ,  PARK, Eun Seon ,  JEON, Tae Young ,  KIM, Young Min ,  KIM, Jong Beom ,  KIM, Chang Sull

IPC分类号： C08L51/04 ,  C08L25/12

摘要： The present invention relates to a thermoplastic resin, a method of preparing the thermoplastic resin, and a thermoplastic resin composition including the thermoplastic resin. Particularly, the thermoplastic resin includes a core prepared by graft-polymerizing 40 to 70 % by weight of a conjugated diene rubbery polymer with 7.5 to 30 % by weight of a total of monomers including an aromatic vinyl compound and a vinyl cyanide compound; and a shell enclosing the core and prepared by graft-polymerizing the conjugated diene rubbery polymer with 15 to 45 % by weight of a total of monomers including an aromatic vinyl compound and a vinyl cyanide compound, wherein the vinyl cyanide compound of the monomers constituting the core is included in an amount of 0.01 to 20 % by weight based on 100 % by weight of a total of the monomers of the core, and the vinyl cyanide compound of the monomers constituting the shell is included in an amount of greater than 25 % by weight to 90 % by weight or less based on 100 % by weight of a total of the monomers of the shell.

摘要翻译： 本发明涉及热塑性树脂，制备该热塑性树脂的方法以及包含该热塑性树脂的热塑性树脂组合物。 特别地，热塑性树脂包括通过将40-70重量％的共轭二烯橡胶状聚合物与7.5-30重量％的包含芳族乙烯基化合物和氰化乙烯基化合物的单体的总量接枝聚合而制备的芯; 以及将该共轭二烯类橡胶状聚合物与15〜45重量％的包含芳香族乙烯基化合物和氰化乙烯基化合物在内的全部单体接枝聚合而成的壳，其中，该单体的乙烯基氰化合物构成 基于100重量％的核的单体总量，核的含量为0.01至20重量％，并且构成壳的单体的乙烯基氰化合物的含量大于25重量％ 基于100重量％的壳单体的总量计，所述壳单体的含量在90重量％以下。