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1.发明公开
公开(公告)号：EP4357380A1
公开(公告)日：2024-04-24
申请号：EP22853529.0
申请日：2022-08-05
申请人： LG Chem, Ltd.
IPC分类号： C08F285/00 , C08F279/04
CPC分类号： C08F279/04 , C08F285/00
摘要： The present invention provides a method for preparing a graft copolymer for the application in a resin composition including a graft copolymer and a matrix resin, and relates to a method for preparing a graft copolymer maintaining impact properties such as impact strength and falling ball impact strength to the same or better levels, while improving flowability and subsequently improving processability, a graft copolymer prepared by the method and a resin composition including same.
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2.发明授权
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
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3.发明公开
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.
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公开(公告)号：EP4029889A1
公开(公告)日：2022-07-20
申请号：EP21836797.7
申请日：2021-07-06
申请人： LG Chem, Ltd.
IPC分类号： C08F279/04 , C08F2/01 , C08F2/38
摘要： Provided are a method of preparing a graft copolymer and a graft copolymer, the method including: batch-adding a first molecular weight controlling agent, a diene-based rubber polymer, an aromatic vinyl-based monomer, and a vinyl cyanide-based monomer to a reactor to initiate polymerization; and after the initiation of polymerization, continuously adding a second molecular weight controlling agent, an aromatic vinyl-based monomer, and a vinyl cyanide-based monomer to the reactor to perform polymerization, wherein the second molecular weight controlling agent includes an alkyl styrene-based dimer and a mercaptan-based compound in a weight ratio of 40.0:60.0 to 70.0:30.0, and a weight ratio of the first molecular weight controlling agent and the second molecular weight controlling agent is 5.0:95.0 to 25.0:75.0.
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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.
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.
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公开(公告)号：EP4095174A1
公开(公告)日：2022-11-30
申请号：EP21882986.9
申请日：2021-08-19
申请人： Lg Chem, Ltd.
发明人： JUNG, Yu Sung , CHAI, Joo Byung , KIM, Jong Beom , JEON, Taeyoung , KIM, In Seok
摘要： The present invention relates to a method of preparing a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer and a method of preparing a thermoplastic resin composition including the same. According to the present invention, conjugated diene rubber latex having an average particle diameter of 2,400 to 2,800 Å is added to enlarged conjugated diene rubber latex obtained by enlarging conjugated diene rubber latex having an average particle diameter of 2,400 to 2,800 Å using a polymer coagulant to prepare bimodal conjugated diene rubber, and a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer is prepared by graft-polymerizing the bimodal conjugated diene rubber.
According to the present invention, time for preparing the enlarged conjugated diene rubber may be reduced, and grafting efficiency may be increased, thereby improving both impact resistance and fluidity and demonstrating a synergistic effect.-
7.发明公开
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.
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8.发明公开
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
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.
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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
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.
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