公开(公告)号：US20190118168A1

公开(公告)日：2019-04-25

申请号：US16091091

申请日：2017-08-01

申请人： LG CHEM, LTD.

发明人： Ji Yeon KIM ,  Jun Seon CHOI ,  Joo Young CHEON ,  Wang Rae JOE ,  Kyung Soo KIM

IPC分类号： B01J27/16 ,  B01J37/03 ,  B01J37/06 ,  B01J37/04 ,  B01J37/08 ,  C07D207/448

CPC分类号： B01J27/16 ,  B01J21/066 ,  B01J27/18 ,  B01J35/002 ,  B01J35/1009 ,  B01J35/1019 ,  B01J35/1061 ,  B01J37/00 ,  B01J37/03 ,  B01J37/031 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  C07D207/444 ,  C07D207/448

摘要： A dehydration catalyst for preparing N-substituted maleimide, which may minimize formation of by-products, is reusable because its activity is not reduced significantly even after being reused several times, and may maintain its reaction activity for a long time, a preparation method thereof, and a method of preparing N-substituted maleimide, are provided.

公开(公告)号：US20170304804A1

公开(公告)日：2017-10-26

申请号：US15520382

申请日：2015-12-08

申请人： LG Chem, Ltd.

发明人： Ji YEON KIM ,  Jun Seon CHOI ,  Joo Young CHEON ,  Wang Rae JOE ,  Hye Jeong OK ,  Kyung Soo KIM

IPC分类号： B01J21/06 ,  C07C45/52 ,  B01J37/03 ,  B01J27/195 ,  B01J27/185 ,  B01J27/16 ,  B01J27/18 ,  C07C47/22 ,  B01J27/188

CPC分类号： 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

摘要： 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.

公开(公告)号：US20210002472A1

公开(公告)日：2021-01-07

申请号：US16954995

申请日：2019-08-05

申请人： LG CHEM, LTD.

发明人： Bong Keun AHN ,  Min Jung KIM ,  Jang Won PARK ,  Yong Yeon HWANG ,  Wang Rae JOE ,  Ji Yoon JEON

IPC分类号： C08L51/00 ,  C08F265/06 ,  C08F257/02 ,  C08F220/14 ,  C08F220/18 ,  C08F220/44 ,  C08F212/08 ,  C08F236/20 ,  C08J3/12

摘要： Provided are a method of preparing a graft copolymer, a graft copolymer, and a thermoplastic resin molded article including the graft copolymer, the method including: 1) preparing a seed by adding one or more selected from the group consisting of an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer, and a vinyl cyan-based monomer and performing polymerization; 2) in the presence of the seed, preparing a core by adding an alkyl (meth)acrylate-based monomer and performing polymerization; and 3) in the presence of the core, preparing a shell by adding an aromatic vinyl-based monomer and a vinyl cyan-based monomer and performing polymerization, wherein the method further includes adding an alkyl acrylate-based polymer. When the alkyl acrylate-based polymer is included in a graft copolymer, a graft copolymer and a thermoplastic resin molded article excellent in weather resistance, fluidity, mechanical properties, and appearance quality can be provided.

公开(公告)号：US20150343430A1

公开(公告)日：2015-12-03

申请号：US14653670

申请日：2014-11-18

申请人： LG CHEM, LTD.

发明人： Ji Yeon KIM ,  Jun Seon CHOI ,  Joo Young CHEON ,  Wang Rae JOE

IPC分类号： B01J29/46 ,  B01J37/04 ,  C07C45/52 ,  B01J29/76

CPC分类号： B01J29/46 ,  B01J27/053 ,  B01J27/055 ,  B01J29/072 ,  B01J29/40 ,  B01J29/405 ,  B01J29/42 ,  B01J29/7007 ,  B01J29/7057 ,  B01J29/7215 ,  B01J29/7615 ,  B01J35/0006 ,  B01J37/0036 ,  B01J37/04 ,  B01J2229/20 ,  C07C45/52 ,  C07C47/22

摘要： The present invention relates to a catalyst for glycerin dehydration, a preparation method thereof, and a preparation method of acrolein. The catalyst for glycerin dehydration exhibits a high glycerin conversion ratio, minimizes by-product formation to improve acrolein selectivity, and also maintains high catalytic activity during reaction.

摘要翻译： 本发明涉及一种用于甘油脱水的催化剂及其制备方法和丙烯醛的制备方法。 用于甘油脱水的催化剂显示出高甘油转化率，使副产物形成最小化以改善丙烯醛选择性，并且还在反应期间保持高的催化活性。

公开(公告)号：US20210363282A1

公开(公告)日：2021-11-25

申请号：US16339308

申请日：2018-09-12

申请人： LG CHEM, LTD.

发明人： Min Jung KIM ,  Bong Keun AHN ,  Yong Yeon HWANG ,  Wang Rae JOE ,  Jang Won PARK

IPC分类号： C08F265/04 ,  C08L51/00 ,  C08L25/12 ,  C08L25/14 ,  C08F285/00

摘要： The present invention provides a graft copolymer comprising (A) a seed comprising units derived from an alkyl methacrylate monomer; (B) a core formed on the seed and comprising units derived from an alkyl acrylate monomer; and (C) a shell formed on the core and comprising units derived from one or more one or more selected from the group consisting of an aromatic vinyl-based monomer, a vinyl cyanide-based monomer and an alkyl methacrylate monomer, wherein an average particle diameter of the core is 40 to 90 nm, and a graft ratio of the shell is 10 to 30%, and a thermoplastic resin composition and a thermoplastic resin molded article including the same.

公开(公告)号：US20180257063A1

公开(公告)日：2018-09-13

申请号：US15749472

申请日：2016-12-15

申请人： LG CHEM. LTD.

发明人： Jun Seon CHOI ,  Ji Yeon KIM ,  Joo Young CHEON ,  Wang Rae JOE ,  Hye Jeong OK ,  Kyung Soo KIM

IPC分类号： B01J27/18 ,  B01J37/08 ,  C07C47/22 ,  C07C45/52

CPC分类号： 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

摘要： 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.

公开(公告)号：US20150298105A1

公开(公告)日：2015-10-22

申请号：US14440270

申请日：2014-07-15

申请人： LG CHEM, LTD.

发明人： Jun Seon CHOI ,  Ji Yeon KIM ,  Joo Young CHEON ,  Wang Rae JOE

IPC分类号： B01J27/195 ,  C07C45/52 ,  B01J37/04 ,  B01J27/188 ,  B01J37/08

CPC分类号： B01J27/195 ,  B01J27/053 ,  B01J27/055 ,  B01J27/188 ,  B01J37/0236 ,  B01J37/04 ,  B01J37/08 ,  B01J37/20 ,  B01J37/28 ,  B01J2523/00 ,  C07C29/60 ,  C07C45/29 ,  C07C45/52 ,  C07C31/225 ,  C07C47/22 ,  B01J2523/17 ,  B01J2523/62 ,  B01J2523/69 ,  B01J2523/305 ,  B01J2523/51 ,  B01J2523/56 ,  B01J2523/3712

摘要： The present invention relates to a catalyst for glycerin dehydration, a preparation method thereof, and a preparation method of acrolein, and more particularly, to a catalyst for glycerin dehydration which minimizes by-product formation during glycerin dehydration to improve acrolein selectivity and maintains high catalytic activity during reaction.

摘要翻译： 本发明涉及一种用于甘油脱水的催化剂及其制备方法和丙烯醛的制备方法，更具体地说，涉及甘油脱水催化剂，其使甘油脱水期间的副产物形成最小化以改善丙烯醛选择性并保持高催化性 反应过程中的活性。

公开(公告)号：US20210246236A1

公开(公告)日：2021-08-12

申请号：US17051757

申请日：2019-10-10

申请人： LG CHEM, LTD.

发明人： Min Jung KIM ,  Yong Yeon HWANG ,  Bong Keun AHN ,  Wang Rae JOE ,  Jang Won PARK ,  Ji Yoon JEON

IPC分类号： C08F6/22 ,  C08F2/22 ,  C08F20/14 ,  C08F265/06 ,  C08F12/08 ,  C08F20/44

摘要： The present invention relates to a method of preparing a graft copolymer powder, which includes: preparing a seed by adding one or more selected from the group consisting of an alkyl (meth)acrylate-based monomer, an aromatic vinyl-based monomer and a vinyl cyan-based monomer to a reactor and carrying out polymerization; preparing a core in the presence of the seed by adding an alkyl (meth)acrylate-based monomer and carrying out polymerization; and preparing a graft copolymer latex in the presence of the core by adding an aromatic vinyl-based monomer and a vinyl cyan-based monomer and carrying out polymerization; adding an alkyl methacrylate-based polymer to the graft copolymer latex and carrying out coagulation, and more particularly, to a method of preparing a graft copolymer powder that is excellent in weather resistance, fluidity, mechanical properties, surface gloss and appearance quality.

公开(公告)号：US20160030929A1

公开(公告)日：2016-02-04

申请号：US14432005

申请日：2014-06-20

申请人： LG CHEM, LTD.

发明人： Wang Rae JOE ,  Jun Seon CHOI ,  Ji Yeon KIM ,  Joo Young CHEON

IPC分类号： B01J27/182 ,  C07C45/51 ,  B01J37/08 ,  C01B25/37 ,  B01J37/28

CPC分类号： B01J27/182 ,  B01J23/10 ,  B01J37/036 ,  B01J37/08 ,  B01J37/28 ,  C01B25/37 ,  C07C45/512 ,  C07C45/52 ,  C07C47/22

摘要： The present invention relates to a method for preparing a catalyst for glycerin dehydration, a catalyst for glycerin dehydration prepared thereby, and a method for preparing acrolein. More particularly, the catalyst for glycerin dehydration prepared by the preparation method is able to minimize by-product formation to improve acrolein selectivity and to maintain high catalytic activity during the reaction.

摘要翻译： 本发明涉及一种甘油脱水催化剂的制备方法，由此制备的甘油脱水催化剂及其制备方法。 更具体地，通过制备方法制备的用于甘油脱水的催化剂能够使副产物形成最小化，以提高丙烯醛选择性并在反应期间保持高的催化活性。

公开(公告)号：US20150336087A1

公开(公告)日：2015-11-26

申请号：US14442992

申请日：2014-06-20

申请人： LG CHEM, LTD.

发明人： Wang Rae JOE ,  Jun Seon CHOI ,  Ji Yeon KIM ,  Joo Young CHEON

IPC分类号： B01J27/188 ,  C07C45/52 ,  B01J37/08

CPC分类号： B01J27/188 ,  B01J23/888 ,  B01J27/199 ,  B01J37/08 ,  B01J2523/00 ,  C07C45/52 ,  C07C47/22 ,  B01J2523/17 ,  B01J2523/51 ,  B01J2523/69 ,  B01J2523/41

摘要： The present invention relates to a catalyst for glycerin dehydration, a preparation method thereof, and a preparation method of acrolein, and more particularly, to a catalyst for glycerin dehydration which minimizes by-product formation to improve acrolein selectivity and maintains high catalytic activity during reaction.

摘要翻译： 本发明涉及一种用于甘油脱水的催化剂及其制备方法和丙烯醛的制备方法，更具体地说，涉及用于甘油脱水的催化剂，其使副产物形成最小化以改善丙烯醛选择性并在反应期间维持高的催化活性 。