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公开(公告)号：EP4194510A1
公开(公告)日：2023-06-14
申请号：EP22820573.8
申请日：2022-06-09
申请人： Lg Chem, Ltd.
发明人： SON, Youngwook , LEE, Dayoung , BAHN, Hyong Min
摘要： Provided is a polycarbonate compound composition having improved surface hardness while maintaining impact strength. The polycarbonate compound composition including polycarbonate and a specific ester repeating unit according to the present invention is characterized by having excellent surface hardness while maintaining intrinsic basic physical properties of polycarbonate.
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公开(公告)号：EP3808790A1
公开(公告)日：2021-04-21
申请号：EP19848468.5
申请日：2019-08-09
申请人： LG CHEM, LTD.
发明人： LEE, Ki Jae , YANG, Young In , SON, Youngwook , HONG, Mooho , JEON, Byoungkue , HWANG, Young Young
摘要： The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.
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公开(公告)号：EP4234608A1
公开(公告)日：2023-08-30
申请号：EP22856135.3
申请日：2022-08-08
发明人： SON, Youngwook , BAHN, Hyong Min , KIM, Byeong-Su , KIM, Taehyung , YU, Yeji
摘要： The present disclosure provides a polycarbonate copolymer including a repeating unit represented by the following Chemical Formula 1, and can provide a polycarbonate copolymer having improved heat resistance by including a repeating unit having the following specific structure.
In Chemical Formula 1, R 1 , R 2 , n1 and n2 are as defined in the specification.-
公开(公告)号：EP4227345A1
公开(公告)日：2023-08-16
申请号：EP22820545.6
申请日：2022-06-08
申请人： Lg Chem, Ltd.
发明人： LEE, Dayoung , SON, Youngwook , BAHN, Hyong Min
摘要： Provided is a polycarbonate copolymer having improved surface hardness while maintaining impact strength. The polycarbonate copolymer including a specific ester repeating unit according to the present invention is characterized by having excellent surface hardness while maintaining intrinsic basic physical properties of polycarbonate.
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公开(公告)号：EP3805289A1
公开(公告)日：2021-04-14
申请号：EP19847433.0
申请日：2019-08-09
申请人： LG CHEM, LTD.
发明人： LEE, Ki Jae , YANG, Young In , SON, Youngwook , HONG, Mooho , JEON, Byoungkue , HWANG, Young Young
摘要： The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.
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公开(公告)号：EP4335889A1
公开(公告)日：2024-03-13
申请号：EP23812836.7
申请日：2023-05-11
申请人： LG Chem, Ltd.
发明人： LEE, Dayoung , SON, Youngwook , BAHN, Hyong Min , YU, Yeji
摘要： The present disclosure relates to a polycarbonate copolymer, and can provide a polycarbonate copolymer that includes a repeating unit having a specific structure, thereby being improved particularly in heat resistance.
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公开(公告)号：EP3904420A1
公开(公告)日：2021-11-03
申请号：EP20861072.5
申请日：2020-09-03
申请人： LG Chem, Ltd.
发明人： LEE, Dayoung , LEE, Ki Jae , HONG, Mooho , HWANG, Young Young , SON, Youngwook , HWANG, Daehyeon
IPC分类号： C08G64/30 , C07D307/68 , C08G64/08 , C08L69/00
摘要： Provided are a diol compound which may be used to prepare a polycarbonate having excellent weather resistance, hardness, heat resistance, transparency, impact resistance, etc. while having excellent mechanical properties, a polycarbonate prepared by using the same, and a preparation method thereof.
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公开(公告)号：EP3628699A1
公开(公告)日：2020-04-01
申请号：EP19751867.3
申请日：2019-01-31
申请人： LG CHEM, LTD.
发明人： JEON, Byoungkue , SON, Youngwook , HWANG, Daehyeon , HONG, Mooho
摘要： A copolycarbonate having excellent weather resistance, wherein the copolycarbonate is introduced with a specific structure, a method of preparing the same, and a molded article including the same are provided.
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公开(公告)号：EP3808807A1
公开(公告)日：2021-04-21
申请号：EP19852112.2
申请日：2019-08-19
申请人： LG CHEM, LTD.
发明人： JEON, Byoungkue , YANG, Young In , HWANG, Daehyeon , HONG, Mooho , LEE, Ki Jae , SON, Youngwook
摘要： The present invention relates to a polycarbonate resin composition exhibiting excellent heat stability and optical properties, and an optical molded article comprising the same. The polycarbonate resin composition comprises polycarbonate resin; and [[4-(dimethylamino)phenyl]methylene] propanedioic acid dimethyl ester as a hindered amine UV absorber that selectively absorbs UVA having a wavelength of 420nm or less.
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公开(公告)号：EP3760662A1
公开(公告)日：2021-01-06
申请号：EP19847949.5
申请日：2019-08-09
申请人： LG CHEM, LTD.
发明人： SON, Youngwook , YANG, Young In , LEE, Ki Jae , HONG, Mooho , JEON, Byoungkue , HWANG, Young Young
摘要： The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance, while having excellent mechanical properties.
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