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公开(公告)号：US20190330463A1
公开(公告)日：2019-10-31
申请号：US16462190
申请日：2018-09-04
Applicant: LG CHEM, LTD.
Inventor： Hyung Seop SHIM , Won Seok LEE , Seok Goo JANG , Sang Hoo PARK , Hye Jeong OK , Jeong Su CHOI , Keun Hoon YOO , Roo Da LEE , Ho Hoon KIM , Jong Ju LEE
Abstract: The present invention relates to a graft copolymer, a thermoplastic resin composition including the graft copolymer, and a method of preparing the thermoplastic resin composition. More specifically, the present invention provides a graft copolymer having a shell in which silica modified with a specific compound is dispersed within a specific content range, a thermoplastic resin composition including the graft copolymer, and a method of preparing the thermoplastic resin composition.In the graft copolymer according to the present invention, since silica modified with a specific compound is dispersed in the periphery of rubber particles, that is, in the shell of the graft copolymer, the dispersibility of the graft copolymer may be improved. Therefore, the graft copolymer may have transparency equal to or better than a conventional graft copolymer. In addition, compared to a resin composition having an equivalent rubber content, the thermoplastic resin composition of the present invention may have excellent physical properties, such as impact strength and tensile strength.
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公开(公告)号：US20180273460A1
公开(公告)日：2018-09-27
申请号：US15762868
申请日：2016-12-15
Applicant: LG CHEM, LTD.
Inventor： Kyung Soo KIM , Jun Seon CHOI , Ji Yeon KIM , Joo Young CHEON , Wang Rae JOE , Hye Jeong OK
IPC: C07C51/25 , C07C45/52 , B01J27/198 , B01J23/888
CPC classification number: C07C51/252 , B01J23/8885 , B01J27/198 , C07C45/52 , C07C47/22 , C07C57/04
Abstract: The present invention relates to a method for preparing acrylic acid from glycerin. More specifically, the present invention provides a method which can improve the selectivity of acrolein by applying a specific catalyst composition and process conditions to minimize the generation of coke carbon of the catalyst, and can prepare acrylic acid with higher productivity for a longer duration of time because a dehydration reaction can be performed for a longer working period while maintaining catalyst activity at a high level during the reaction.
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公开(公告)号：US20200270442A1
公开(公告)日：2020-08-27
申请号：US16646127
申请日：2019-05-14
Applicant: LG CHEM, LTD.
Inventor： Hye Jeong OK , Seok Goo JANG , Sang Hoo PARK , Hyung Seop SHIM , Jeong Su CHOI , Keun Hoon YOO , Won Seok LEE , Roo Da LEE , Ho Hoon KIM , Jong Ju LEE
IPC: C08L33/12 , C08F220/14 , C08F279/02 , C08L47/00
Abstract: The present invention relates to a matrix copolymer including a cellulose nanocrystal derivative, an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; a graft copolymer including a cellulose nanocrystal derivative, a conjugated diene-based polymer, an alkyl (meth)acrylate-based monomer unit, an aromatic vinyl-based monomer unit, and a vinyl cyan-based monomer unit; and a thermoplastic resin composition including at least one thereof. In accordance with the present invention, provided is a thermoplastic resin composition having improved processability, impact strength, tensile strength and chemical resistance while maintaining transparency.
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公开(公告)号：US20190062484A1
公开(公告)日：2019-02-28
申请号：US16083857
申请日：2018-01-02
Applicant: LG CHEM, LTD.
Inventor： Seok Goo JANG , Jeong Su CHOI , Won Seok LEE , Roo Da LEE , Sang Hoo PARK , Hye Jeong OK , Ho Hoon KIM , Hyung Seop SHIM , Keun Hoon YOO
IPC: C08F279/02 , C08F220/14 , C08F222/34 , C08F212/04 , C08F2/24 , C08L55/02
Abstract: The present invention relates to a graft copolymer having excellent thermal stability, a method of preparing the graft copolymer, a thermoplastic resin composition including the graft copolymer, and a molded part including the thermoplastic resin composition. According to the present invention, since the thermoplastic resin composition of the present invention includes the graft copolymer having excellent thermal stability, the thermoplastic resin composition and the molded part manufactured using the thermoplastic resin composition have excellent physical properties, such as impact strength, fluidity, and transparency. Furthermore, the degree of discoloration that may occur when the resin composition or the molded part is allowed to stay in an injection molding machine or stay at a high temperature for a long period of time may be reduced.
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Patent Agency Ranking
公开(公告)号：US20180371230A1
公开(公告)日：2018-12-27
申请号：US15779815
申请日：2017-08-30
Applicant: LG CHEM, LTD.
Inventor： Jeong Su CHOI , Won Seok LEE , Seok Goo JANG , Roo Da LEE , Sang Hoo PARK , Ho Hoon KIM , Hyung Seop SHIM , Keun Hoon YOO , Hye Jeong OK
IPC: C08L51/04 , C08F279/02 , C08F220/14 , C08L33/12
Abstract: The present disclosure relates to a transparent thermoplastic resin and a method of preparing the same. More particularly, the present disclosure provides a transparent thermoplastic resin that provides superior transparency without generation of flow marks on a surface, and does not exhibit cracks or a whitening phenomenon during processing due to superior whitening resistance, particularly superior whitening resistance at low temperature, a method of preparing the transparent thermoplastic resin, and the like.
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6.发明申请公开(公告)号：US20170304804A1
公开(公告)日：2017-10-26
申请号：US15520382
申请日：2015-12-08
Applicant: LG Chem, Ltd.
Inventor： Ji YEON KIM , Jun Seon CHOI , Joo Young CHEON , Wang Rae JOE , Hye Jeong OK , Kyung Soo KIM
IPC: B01J21/06 , C07C45/52 , B01J37/03 , B01J27/195 , B01J27/185 , B01J27/16 , B01J27/18 , C07C47/22 , B01J27/188
CPC classification number: B01J21/066 , B01J27/16 , B01J27/1802 , B01J27/1806 , B01J27/1808 , B01J27/1817 , B01J27/1853 , B01J27/1856 , B01J27/188 , B01J27/195 , B01J37/03 , B01J37/033 , B01J2523/00 , C07C45/52 , C07C47/22 , B01J2523/22 , B01J2523/48 , B01J2523/51 , B01J2523/69 , B01J2523/23 , B01J2523/13 , B01J2523/305 , B01J2523/842 , B01J2523/55 , B01J2523/27 , B01J2523/18 , B01J2523/56
Abstract: The present invention relates to: a catalyst for glycerin dehydration; a preparation method therefor; and an acrolein preparation method using the catalyst. According to one embodiment of the present invention, the catalyst is used in glycerin dehydration so as to exhibit high catalytic activity, a high yield and high acrolein selectivity, and has a characteristic in which carbon is not readily deposited, thereby having a long lifetime compared with that of a conventional catalyst.
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公开(公告)号：US20210292538A1
公开(公告)日：2021-09-23
申请号：US16619435
申请日：2018-11-09
Applicant: LG CHEM, LTD.
Inventor： Jong Ju LEE , Jeong Su CHOI , Won Seok LEE , Roo Da LEE , Ho Hoon KIM , Keun Hoon YOO , Seok Goo JANG , Sang Hoo PARK , Hye Jeong OK , Hyung Seop SHIM
Abstract: The present invention relates to a method for preparing a graft copolymer powder, which includes: performing emulsion polymerization of a conjugated diene polymer, an aromatic vinyl monomer and an alkyl (meth)acrylate monomer to prepare a graft copolymer latex; coagulating the graft copolymer latex; aging the coagulated graft copolymer; preparing a wet powder of the graft copolymer by dehydrating the aged graft copolymer; and adding poly(oxyalkylene)diglycolic acid to the wet powder of the graft copolymer.
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公开(公告)号：US20190382575A1
公开(公告)日：2019-12-19
申请号：US16463830
申请日：2018-10-02
Applicant: LG CHEM, LTD.
Inventor： Sang Hoo PARK , Seok Goo JANG , Hye Jeong OK , Ho Hoon KIM , Hyung Seop SHIM , Jeong Su CHOI , Keun Hoon YOO , Won Seok LEE , Roo Da LEE , Jong Ju LEE
IPC: C08L33/06 , C08F279/06 , C08J3/07 , C08K5/3472
Abstract: The present invention relates to a method for preparing a graft copolymer complex, a copolymer complex prepared by the method, and a thermoplastic resin composition comprising the copolymer complex, wherein the method comprises emulsion-polymerizing a conjugated diene-based polymer, an aromatic vinyl-based monomer, and an alkyl (meth)acrylate-based monomer to prepare a graft copolymer latex; and adding an imidazole-based ionic compound to the graft copolymer latex and coagulating the same.
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公开(公告)号：US20180257063A1
公开(公告)日：2018-09-13
申请号：US15749472
申请日：2016-12-15
Applicant: LG CHEM. LTD.
Inventor： Jun Seon CHOI , Ji Yeon KIM , Joo Young CHEON , Wang Rae JOE , Hye Jeong OK , Kyung Soo KIM
CPC classification number: B01J27/1808 , B01J23/002 , B01J27/1853 , B01J27/188 , B01J27/195 , B01J35/1014 , B01J35/1019 , B01J37/031 , B01J37/06 , B01J37/08 , B01J37/088 , B01J2523/00 , C07C45/52 , C07C47/22 , B01J2523/48 , B01J2523/51 , B01J2523/69 , B01J2523/842 , B01J2523/55 , B01J2523/27 , B01J2523/56
Abstract: The present disclosure relates to a catalyst for dehydration of glycerin, a preparation method thereof, and a production method of acrolein using the catalyst.Particularly, the catalyst according to an embodiment of the present disclosure is used in a dehydration reaction of glycerin to exhibit high catalytic activity, a high yield, and high selectivity to acrolein and acrylic acid, and has a longer lifetime compared to the conventional catalysts due to a characteristic that coke carbon cannot be easily deposited on the surface of the catalyst.
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