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1.发明授权公开(公告)号：US11718745B2
公开(公告)日：2023-08-08
申请号：US17417360
申请日：2020-09-24
申请人： LG CHEM, LTD.
发明人： Gyu Sun Kim , Dae Woo Lee , Jae Bum Seo , Jung Tae Park , Seongjae Shin , Jiuk Jang
IPC分类号： C08L51/00 , C08F212/08 , C08F220/14 , C08F220/44 , C08F222/40
CPC分类号： C08L51/003 , C08F212/08 , C08F220/14 , C08F220/44 , C08F222/40 , C08L2201/08 , C08L2203/30 , C08L2205/025 , C08L2205/03 , C08L2205/18
摘要： A thermoplastic resin composition of the present invention includes 55 to 70% by weight of a non-grafted copolymer (A) containing 65 to 83% by weight of a (meth)acrylic acid alkyl ester compound, 2 to 12% by weight of an N-substituted maleimide compound, 1 to 6% by weight of a vinyl cyanide compound, and 7 to 17% by weight of an aromatic vinyl compound; 20 to 42% by weight of an acrylate-based rubber-aromatic vinyl compound-vinyl cyanide compound graft copolymer (B) containing acrylate-based rubber having an average particle diameter of 50 to 200 nm; and 1 to 15% by weight of an acrylate-based rubber-aromatic vinyl compound-vinyl cyanide compound graft copolymer (C) containing acrylate-based rubber having an average particle diameter of 300 to 600 nm. Within this range, a thermoplastic resin composition having excellent weather resistance, heat resistance, scratch resistance, and colorability.
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公开(公告)号：US11655361B2
公开(公告)日：2023-05-23
申请号：US17055957
申请日：2020-02-10
申请人： LG CHEM, LTD.
发明人： Joon Hwi Jo , Seong Lyong Kim , Tae Hoon Kim , Dae Woo Lee , Jae Bum Seo
CPC分类号： C08L51/04 , C08K5/54 , C08L25/12 , C08L25/14 , C08L33/12 , C08L2201/08 , C08L2203/30 , C08L2205/025 , C08L2205/035
摘要： Provided is a thermoplastic resin composition which includes: a first copolymer including an acrylic graft copolymer; a second copolymer including an alkyl-substituted styrene-based monomer unit, a vinyl cyanide-based monomer unit, and a (meth)acrylate-based monomer unit; and a third copolymer including an alkyl-unsubstituted styrene-based monomer unit, a vinyl cyanide-based monomer unit, and a (meth)acrylate-based monomer unit. According to the present invention, a thermoplastic resin composition and a thermoplastic resin molded article, which are excellent in heat resistance, colorability, and scratch resistance, can be provided.
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公开(公告)号：US10570229B2
公开(公告)日：2020-02-25
申请号：US15739674
申请日：2016-11-02
申请人： LG CHEM, LTD.
发明人： Jae Bum Seo , Chang Hun Han , Dae Woo Lee , Jung Tae Park , Gyu Sun Kim
IPC分类号： C08F212/10 , C08F6/10 , C08F2/38 , C08F2/04 , C08F2/44
摘要： The present invention relates to a method of preparing a styrene-based resin having a low oligomer content and a styrene-based resin prepared thereby. The preparation method according to the present invention may prepare a styrene-based resin having a reduced oligomer content by using a polymerization initiator having a 1 hour half-life temperature, which is 5° C. to 25° C. lower than a temperature during polymerization, and controlling devolatilization conditions.
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公开(公告)号：US10174193B2
公开(公告)日：2019-01-08
申请号：US15508472
申请日：2016-06-17
申请人： LG CHEM, LTD.
发明人： Jae Bum Seo , Chang Hun Han , Dae Woo Lee , Jung Tae Park , Eun Jung Choi , Byoung Il Kang , Da Eun Sung , Gyu Sun Kim
摘要： The present invention relates to method for preparing a modified acrylonitrile-butadiene-styrene resin having excellent matteness, impact resistance, and heat resistance, as well as having a low total volatile organic compounds content, and to a modified acrylonitrile-butadiene-styrene resin prepared thereby.
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5.发明授权公开(公告)号：US09856373B2
公开(公告)日：2018-01-02
申请号：US14893030
申请日：2014-06-25
申请人： LG CHEM, LTD.
发明人： Byoung Il Kang , Chang Hun Han , Jae Bum Seo , Da Eun Sung , Dae Woo Lee , Eun Jung Choi
IPC分类号： C08L33/12 , C08L53/02 , C08F220/14
CPC分类号： C08L53/02 , C08F220/14 , C08L33/12 , C08F2220/1841
摘要： Disclosed is a (meth)acrylate-based resin composition comprising a poly(alkyl(meth)acrylate-phenyl(meth)acrylate) copolymer comprising phenyl(meth)acrylate having excellent surface hardness and a high refractive index, as a base resin and a (conjugated diene (meth)acrylate) graft copolymer having excellent impact absorption efficiency, the (meth)acrylate-based resin composition providing excellent transparency by exhibiting excellent impact resistance even using a small amount of impact modifier. The (meth)acrylate-based resin composition having excellent impact resistance and transparency comprises 1 to 29 wt % of the (conjugated diene-(meth)acrylate) graft copolymer and 71 to 99 wt % of the poly(alkyl(meth)acrylate-phenyl(meth)acrylate) copolymer.
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公开(公告)号：US11180590B2
公开(公告)日：2021-11-23
申请号：US16339705
申请日：2018-07-26
申请人： LG CHEM, LTD.
发明人： Jae Bum Seo , Dae Woo Lee , Jung Tae Park , Gyu Sun Kim , Ji Uk Jang
IPC分类号： C08F212/08 , C08F220/18 , C08F220/44 , C08F2/02 , C08F6/10 , C08F6/28 , C08F222/40
摘要： The present invention relates to a copolymer including 20 to 65 wt % of units derived from an alkyl styrene-based monomer; 10 to 40 wt % of units derived from a (meth)acrylate-based monomer; and 20 to 40 wt % of units derived from vinyl cyan-based monomer, based on the total weight of the copolymer, wherein the residual monomer content is 780 ppm or less, and a method for preparing the same.
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公开(公告)号：US11884808B2
公开(公告)日：2024-01-30
申请号：US17055941
申请日：2019-11-28
申请人： LG CHEM, LTD.
发明人： Jung Tae Park , Dae Woo Lee , Jae Bum Seo , Gyu Sun Kim , Ji Uk Jang
IPC分类号： C08L33/06 , C08L33/12 , C08L35/00 , C08L51/04 , C08F220/18 , C08L33/08 , C08F220/44 , C08F222/40
CPC分类号： C08L33/062 , C08F220/18 , C08F220/44 , C08F222/40 , C08L33/08 , C08L33/12 , C08L35/00 , C08L51/04 , C08F2500/21 , C08F2500/24 , C08L2201/08 , C08L2203/30 , C08L2207/53 , C08F220/18 , C08F220/42 , C08F220/44 , C08F222/40 , C08L33/12 , C08L33/12 , C08L51/04 , C08L2205/025 , C08L2205/03 , C08L2205/22 , C08L35/00 , C08L35/00 , C08L51/04 , C08L2205/025 , C08L2205/03 , C08L2205/22
摘要： The present invention relates to a thermoplastic resin composition, which includes a first copolymer formed by polymerizing a monomer mixture of a (meth)acrylate-based monomer, a vinyl cyan-based monomer and a maleimide-based monomer, and having a refractive index of 1.5170 or less and a glass transition temperature of 115.0° C. or more; and a second copolymer formed by graft-copolymerizing an aromatic vinyl-based monomer and a vinyl cyan-based monomer onto an acrylic rubber polymer, and the thermoplastic resin composition according to the present invention has improved heat resistance, colorability and scratch resistance.
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公开(公告)号：US10717859B2
公开(公告)日：2020-07-21
申请号：US15815520
申请日：2017-11-16
申请人： LG CHEM, LTD.
发明人： Gyu Sun Kim , Chang Hun Han , Dae Woo Lee , Jae Bum Seo , Jung Tae Park , Eun Jung Choi , Byoung Il Kang , Da Eun Sung
IPC分类号： C08F2/02 , C08F212/12 , C08F220/44 , C08F222/10 , C08L25/16 , C08L55/02 , C08L25/12 , C08F279/04 , C08K5/315 , C08F285/00 , C08K5/14
摘要： The present invention relates to a composition for preparing a SAN copolymer, a SAN copolymer, a preparation method therefor, a heat-resistant ABS resin blend comprising the same, and heat-resistant ABS pellets. Specifically, the present invention provides a composition for preparing a SAN copolymer, the composition comprising a monomer mixture, and ethylene glycol dimethacrylate as a chain extender, wherein the monomer mixture comprises 60 to 75 wt % of an α-methylstyrene monomer and 25 to 40 wt % of an acrylonitrile-based monomer based on the total weight of the monomer mixture; and the ethylene glycol dimethacrylate is contained in an amount of 0.001 to 0.15 parts by weight based on 100 parts by weight of the monomer mixture.
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公开(公告)号：US10519262B2
公开(公告)日：2019-12-31
申请号：US15574806
申请日：2017-01-31
申请人： LG CHEM, LTD.
发明人： Dae Woo Lee , Chang Hun Han , Jae Bum Seo , Jung Tae Park , Gyu Sun Kim
IPC分类号： C08F212/10 , C08K5/14 , C08F214/10 , C08F6/10 , C08F297/04 , C08L55/02 , C08F2/38 , C08F2/44
摘要： The present invention provides a method of preparing an aromatic vinyl-unsaturated nitrile-based copolymer in which, when an aromatic vinyl-unsaturated nitrile-based copolymer in which a content of a structural unit derived from unsaturated nitrile monomers in the copolymer is in the range of 22 to 30 wt % is prepared, oligomer content and unreacted monomer content are decreased, resulting in excellent heat resistance, significantly improved surface quality, and particularly, reduced generation of residue on a product surface when used in a closed high temperature environment and reduced occurrence of mold deposits during injection molding, and an aromatic vinyl-unsaturated nitrile-based copolymer prepared using the method.
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公开(公告)号：US11708443B2
公开(公告)日：2023-07-25
申请号：US17047657
申请日：2019-11-08
申请人： LG CHEM, LTD.
发明人： Ji Uk Jang , Dae Woo Lee , Jae Bum Seo , Jung Tae Park , Gyu Sun Kim
IPC分类号： C08F279/04 , C08F2/02 , C08F226/06 , C08L55/02
CPC分类号： C08F279/04 , C08F2/02 , C08F226/06 , C08L55/02 , C08L2201/08
摘要： Provided is a method of preparing a graft copolymer, which includes: preparing a liquid maleimide-based monomer; preparing a reaction solution including a diene-based rubber polymer, an aromatic vinyl-based monomer, and a vinyl cyan-based monomer; and adding the liquid maleimide-based monomer and the reaction solution to a reactor and carrying out polymerization. According to the preparation method of the present invention, the amount of the maleimide-based monomer involved in the polymerization can be increased, and the color characteristics, glass transition temperature, and softening temperature of the graft copolymer are improved.
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