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公开(公告)号：US10717802B2
公开(公告)日：2020-07-21
申请号：US16068873
申请日：2017-08-01
申请人： LG CHEM, LTD.
发明人： Su Jeong Han , Young Min Kim , Jin Hyoung Lee , Yoo Vin Kim , Young Hwan Jeong , Sun Haeng Chung , Jae Min Suk , Jae Won Heo
IPC分类号： C08F279/04 , C08L25/12 , C08F2/26 , C08L55/02 , C08F136/06
摘要： The present invention relates to a method of preparing an ABS-based resin composition and a method of manufacturing an ABS-based injection-molded article including the same. More particularly, the present invention provides a method of preparing an ABS-based resin composition using a multimeric acid of unsaturated fatty acid or a metal salt thereof, as an emulsifier, in a diene-based rubber latex polymerization step and an ABS-based graft polymerization step. In accordance with the present invention, when an ABS-based resin composition is prepared using a multimeric acid of unsaturated fatty acid or a metal salt thereof as an emulsifier, stability of polymerization is secured and surface characteristics, such as surface gloss or sharpness, of an ABS-based injection-molded article are improved.
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公开(公告)号：US10508168B2
公开(公告)日：2019-12-17
申请号：US15552238
申请日：2016-11-28
申请人： LG CHEM, LTD.
发明人： Jae Min Suk , Young Hwan Jeong , Young Min Kim , Jin Hyoung Lee , Su Jeong Han , Yoo Vin Kim , Sun Haeng Chung
IPC分类号： C08F220/64 , C08F236/12 , C08L25/12 , C08F279/04 , C08F210/12 , C08F212/08 , C08F2/18 , C08J3/12 , C08L9/00 , C08F136/06
摘要： The present invention relates to a thermoplastic polymer, a method of preparing the thermoplastic polymer, and a thermoplastic polymer composition including the thermoplastic polymer. More particularly, the present invention provides a thermoplastic polymer reducing the amount of gas generated in high-temperature extrusion and injection-molding processes to improve surface gloss and definition of a resin and provides superior latex stability when a chain-type fatty acid or a salt thereof having a specific branch group or functional group is included as an emulsifier during shell polymerization of a thermoplastic polymer including a core-shell structure, a method of preparing the thermoplastic polymer, and a thermoplastic polymer composition including the thermoplastic polymer.
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公开(公告)号：US10208151B2
公开(公告)日：2019-02-19
申请号：US15533631
申请日：2015-12-10
申请人： LG CHEM, LTD.
发明人： Jae Min Suk , Young Min Kim , Jin Hyoung Lee , Su Jeong Han , Yoo Vin Kim , Young Hwan Jeong , Sun Haeng Chung
IPC分类号： C08F279/04 , C08F36/04 , C08F2/22 , C08F2/44 , C08K5/053
摘要： The present invention relates to a method for preparing a diene-based rubber latex having improved impact strength, gloss and flexibility, diene-based rubber latex prepared therefrom, and an acrylonitrile-butadiene-styrene graft copolymer having improved impact strength and production yield while having reduced rubber solid content ratio by comprising the same.
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公开(公告)号：US10988604B2
公开(公告)日：2021-04-27
申请号：US15780222
申请日：2017-08-01
申请人： LG CHEM, LTD.
发明人： Jin Hyoung Lee , Young Min Kim , Su Jeong Han , Yoo Vin Kim , Young Hwan Jeong , Sun Haeng Chung , Jae Min Suk , Jae Won Heo
IPC分类号： C08L25/12 , C08F279/04 , C08F36/04 , B29C45/00 , C08F36/06 , B29K55/02 , C08F2/24 , C08F2/38 , C08K5/372 , C08L55/02 , C08K5/36 , C08K5/092
摘要： A method of preparing a diene-based rubber latex, a method of preparing an ABS-based graft copolymer including the same, and a method of manufacturing an ABS-based injection-molded article include preparing an in-situ bimodal rubber latex, in which a small-diameter polymer and a large-diameter polymer are formed in a desired ratio, by controlling contents, addition time points, and types of reactants when a conjugated diene based monomer, a crosslinking agent with a long linear chain end, an emulsifier including a multimeric acid of an unsaturated fatty acid or a metal salt thereof, and a molecular weight regulator are polymerized.
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公开(公告)号：US10711130B2
公开(公告)日：2020-07-14
申请号：US16070153
申请日：2017-09-26
申请人： LG CHEM, LTD.
发明人： Su Jeong Han , Young Min Kim , Jin Hyoung Lee , Yoo Vin Kim , Young Hwan Jeong , Sun Haeng Chung , Jae Min Suk , Jae Won Heo
IPC分类号： C08L55/02 , C08F279/04 , C08K5/42 , C08F2/24 , C08F4/40 , C08K5/092 , B29C45/00 , C08K5/098 , C08F2/34 , C08K5/372
摘要： The present invention relates to a method of preparing an ABS-based graft copolymer having improved impact strength and an ABS-based injection-molded article including the same. More particularly, the present invention provides an ABS-based copolymer resin having improved impact strength by optimizing structures of large-diameter diene-based rubber latex particles and a matrix structure between ABS-based copolymer particles and a SAN resin through introduction of a multimeric acid of an unsaturated fatty acid or a metal salt thereof as an emulsifier in a large-diameter diene-based rubber latex polymerization step and an ABS graft polymerization step.
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公开(公告)号：US10385154B2
公开(公告)日：2019-08-20
申请号：US15534468
申请日：2015-12-15
申请人： LG CHEM, LTD.
发明人： Yoo Vin Kim , Young Min Kim , Jin Hyoung Lee , Su Jeong Han , Young Hwan Jeong , Sun Haeng Chung , Jae Min Suk
IPC分类号： C08F36/06 , C08F136/06 , C08F279/04 , C08F2/22
摘要： The present invention relates to a method for preparing a diene-based rubber polymer having relatively low gel content and high swelling index while having high polymerization conversion rate, a diene-based rubber polymer prepared therefrom and an acrylonitrile-butadiene-styrene graft copolymer with a core-shell structure comprising the same as a core. Accordingly, the method for preparing a diene-based rubber polymer and the acrylonitrile-butadiene-styrene graft copolymer with a core-shell structure comprising the diene-based rubber polymer prepared therefrom can be easily applied to the industries requiring them, in particular, an impact reinforcing agent industry.
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公开(公告)号：US10508159B2
公开(公告)日：2019-12-17
申请号：US15519111
申请日：2015-12-24
申请人： LG CHEM, LTD.
发明人： Jin Hyoung Lee , Young Min Kim , Su Jeong Han , Yoo Vin Kim , Young Hwan Jeong , Sun Haeng Chung , Jae Min Suk
摘要： The present invention relates to a method for preparing large-sized diene-based rubber latex, and an acrylonitrile-butadiene-styrene graft copolymer comprising the same. More particularly, it relates to a method for preparing large-sized diene-based rubber latex having improved impact strength by controlling content and time of addition of a cross-linking agent and an emulsifier having critical micelle concentration (CMC) of 150 mg/L or less during preparation of the large-sized rubber latex, large-sized diene-based rubber latex prepared therefrom, and an acrylonitrile-butadiene-styrene graft copolymer and thermoplastic resin comprising the same.
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公开(公告)号：US10266615B2
公开(公告)日：2019-04-23
申请号：US15607268
申请日：2017-05-26
申请人： LG CHEM, LTD.
发明人： Sun Haeng Chung , Young Min Kim , Jin Hyoung Lee , Su Jeong Han , Yoo Vin Kim , Young Hwan Jeong , Jae Min Suk
摘要： The present invention relates to a method for preparing an acrylonitrile-butadiene-styrene graft copolymer having improved impact strength, which comprises: a step of preparing diene-based rubber latex by adding an acrylate-based cross-linking agent (Step 1); and a step of inserting the same cross-linking agent with the acrylate-based cross-linking agent, an aromatic vinyl-based compound and a vinyl cyan-based compound to the diene-based rubber latex and then subjecting thereof to graft copolymerization (Step 2), an acrylonitrile-butadiene-styrene graft copolymer prepared by the method, and an acrylonitrile-butadiene-styrene thermoplastic resin comprising the same.
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公开(公告)号：US11634527B2
公开(公告)日：2023-04-25
申请号：US16954132
申请日：2019-10-21
申请人： LG CHEM, LTD.
发明人： Jae Min Suk , Yoo Vin Kim , Young Min Kim , Jin Hyoung Lee , Sujeong Han , Young Hwan Jeong , Changhong Park , Jaewon Heo
IPC分类号： C08F279/04 , C08L55/02 , C08L51/04
摘要： A method of preparing a graft copolymer includes a step of performing coagulation by adding an acid coagulant to 100 parts by weight (based on solids) of graft copolymer latex prepared by graft-polymerizing an aromatic vinyl compound and a vinyl cyanide compound onto conjugated diene rubber latex; and a step of performing coagulation once more by adding a salt coagulant thereto. In a resulting graft copolymer, coagulation efficiency may be improved and the gloss of the prepared graft copolymer may be increased. In addition, since a b-value measured using a Hunter lab colorimeter and a b-value measured after being left at 250° C. for 15 minutes are low, the graft copolymer may have excellent color characteristics. In addition, since heating loss is low and scorch time is long, the graft copolymer may have excellent processing characteristics.
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10.发明授权公开(公告)号：US11261277B2
公开(公告)日：2022-03-01
申请号：US16339678
申请日：2018-09-20
申请人： LG CHEM, LTD.
发明人： Yoo Vin Kim , Young Min Kim , Jin Hyoung Lee , Su Jeong Han , Young Hwan Jeong , Jae Min Suk , Jae Won Heo
IPC分类号： C08F279/04 , C08F2/26 , C08F2/24 , C08L55/02 , C08K5/098
摘要： Provided are a method of preparing a graft copolymer, a graft copolymer, and a thermoplastic resin molded article. The method of preparing a graft copolymer includes 1) adding a conjugated diene-based monomer and performing polymerization to prepare a conjugated diene-based polymer; and 2) adding the conjugated diene-based polymer, an aromatic vinyl monomer, and a vinyl cyan monomer and performing polymerization to prepare a graft copolymer, wherein an emulsifier having an APHA color value of 50 or less and a critical micelle concentration of 1 to 50 g/l is added, so that excellent polymerization stability, colorability, light resistance, and surface clarity are exhibited.
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