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公开(公告)号：US11691934B2
公开(公告)日：2023-07-04
申请号：US17413566
申请日：2019-10-04
发明人： Youngjin Kim , Namjin Jang , Kyuho Song , Wook Jeong
IPC分类号： C07C5/05 , B01F27/81 , B01F23/233 , B01F35/221 , B01F27/112 , B01J8/02 , B01J27/13 , B01J31/02 , B01F101/00
CPC分类号： C07C5/05 , B01F23/2331 , B01F27/112 , B01F27/81 , B01F35/2214 , B01J8/02 , B01J27/13 , B01J31/0207 , B01J31/0267 , B01F23/23314 , B01F2101/2204 , B01J2208/00867 , B01J2231/645 , C07C2531/02 , C07C2531/30
摘要： A synthesis method and a synthesis device of cyclododecene according to the present invention have a high conversion rate of cyclododecatriene which is a reactant and a high selectivity of cyclododecene which is a required product, and even so, have an effect of significantly decreasing a reaction time. In addition, the method and the device have an excellent conversion rate of cyclododecatriene and an excellent selectivity of cyclododecene, while maintaining excellent reactivity without an organic solvent such as ethanol. Therefore, a volume of the reactor relative to an output of cyclododecene may be further decreased. Moreover, the method and the device may minimize costs for facilities and process, are practical, decrease a process time, and are industrially advantageous for mass production as compared with the conventional art.
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公开(公告)号：US20210070673A1
公开(公告)日：2021-03-11
申请号：US16958181
申请日：2018-10-23
发明人： Namjin Jang , Kyuho Song , Youngjin Kim , Wook Jeong
摘要： A method for preparing cyclododecene and a synthesis device therefor, of the present invention, remarkably increase the conversion ratio of cyclododecatriene and selectivity of cyclododecene, can minimize the costs required for equipment and processing, are practical, reduce processing time, and are industrially advantageous to mass production in comparison with a conventional method and device.
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公开(公告)号：US11571687B2
公开(公告)日：2023-02-07
申请号：US17413582
申请日：2019-08-27
发明人： Youngjin Kim , Namjin Jang , Kyuho Song
摘要： The present invention pertains to a method for recovering a selective homogeneous hydrogenation catalyst and a method for reusing the recovered selective homogeneous hydrogenation catalyst. The method for recovering a selective homogeneous hydrogenation catalyst comprises: a step for synthesizing cyclododecene by selectively hydrogenating a first reaction solution containing cyclododecatriene, triphenylphosphine, formaldehyde, and ruthenium chloride, wherein a selective homogeneous hydrogenation catalyst is prepared during the selective hydrogenation reaction from the triphenylphosphine, formaldehyde, and ruthenium chloride to synthesize the cyclododecene; and a step for distilling and separating unreacted cyclododecatriene and cyclododecadiene, as well as the product cyclododecene, from a second reaction solution in which the cyclododecene synthesis has been completed, and recovering the selective homogeneous hydrogenation catalyst.
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公开(公告)号：US11608304B2
公开(公告)日：2023-03-21
申请号：US16958181
申请日：2018-10-23
发明人： Namjin Jang , Kyuho Song , Youngjin Kim , Wook Jeong
摘要： A method for preparing cyclododecene and a synthesis device therefor, of the present invention, remarkably increase the conversion ratio of cyclododecatriene and selectivity of cyclododecene, can minimize the costs required for equipment and processing, are practical, reduce processing time, and are industrially advantageous to mass production in comparison with a conventional method and device.
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公开(公告)号：US20240033654A1
公开(公告)日：2024-02-01
申请号：US18256940
申请日：2021-12-14
发明人： Jinho PARK , Namjin Jang , Ji Hye CHOI
IPC分类号： B01D3/38
CPC分类号： B01D3/38 , B01D2257/2045
摘要： The present invention relates to a method for removing HCl in a chlorination reaction, and more particularly, to a method capable of efficiently removing HCl produced during a chlorination reaction of an aromatic compound. The present invention includes, in a chlorination reaction in which a final product with a chlorine-substituted terminal is produced in column reactors connected to each other in series, heating hydrogen chloride produced in the chlorination reaction in a stripping column connected to the reactor positioned at the rearmost end, to remove hydrogen chloride.
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公开(公告)号：US11629112B2
公开(公告)日：2023-04-18
申请号：US17293482
申请日：2019-12-16
发明人： Namjin Jang , Eun Jeong Kim , Sun Uk Lee , Jong Kwon Lee
IPC分类号： C07C51/36 , C07C51/353 , C07C29/149 , C07C29/158 , C07C29/56 , B01J21/06 , B01J23/44 , B01J23/62
摘要： The present disclosure relates to a method for preparation of 1,4-cyclohexanedimethanol. According to the present disclosure, two step reduction reactions are conducted using terephthalic acid as starting material, and an isomerization process for increasing the rate of trans isomers of CHDA is introduced therebetween, thereby providing a method capable of stably preparing CHDM with high rate of trans isomers.
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