-
1.发明授权Method for producing lactide directly from lactic acid and a catalyst used therein 有权直接由乳酸生产丙交酯的方法及其中使用的催化剂公开(公告)号：US09539561B2
公开(公告)日：2017-01-10
申请号：US14422526
申请日：2013-04-24
Inventor： Dong Won Hwang , Jong-San Chang , Pravin P. Upare , U-Hwang Lee , Young Kyu Hwang
IPC: C07D319/00 , B01J23/14 , C07D319/10 , C07D319/12 , B01J21/04 , B01J21/06 , B01J21/08 , B01J35/00 , C01G19/02 , B01J37/03 , B01J29/03 , B01J29/40 , B01J29/70
CPC classification number: B01J23/14 , B01J21/04 , B01J21/063 , B01J21/066 , B01J21/08 , B01J29/0308 , B01J29/405 , B01J29/7057 , B01J35/0006 , B01J35/002 , B01J37/031 , B01J37/035 , C01G19/02 , C07D319/10 , C07D319/12
Abstract: The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.
Abstract translation: 本发明提供一种在含有锡化合物，优选锡（IV）化合物的催化剂存在下使乳酸进行脱水反应直接生产丙交酯的方法，其中丙交酯可直接或通过一步从乳酸 酸，而不经过生产或分离乳酸低聚物的步骤。 本发明的方法具有不会损失乳酸，乳酸转化率高，对光学纯丙交酯具有高选择性，并保持催化剂寿命长的优点。 此外，由于乳酸低聚物不是或几乎不产生，内消旋 - 丙交酯的选择性低，所以该方法还具有可以节省除去或纯化成本的优点。
-
公开(公告)号：US09861932B2
公开(公告)日：2018-01-09
申请号：US14959152
申请日：2015-12-04
Inventor： U-Hwang Lee , Jong San Chang , Young Kyu Hwang , You In Park , Hye Rim Song , Seung Eun Nam , Do Young Hong , Sue Kyung Lee , Kyung Ho Cho
CPC classification number: B01D53/22 , B01D53/228 , B01D67/0079 , B01D69/02 , B01D69/148 , B01D2053/221 , B01D2256/10 , B01D2256/12 , B01D2256/16 , B01D2256/22 , B01D2256/245 , B01D2257/102 , B01D2257/104 , B01D2257/108 , B01D2257/2047 , B01D2257/30 , B01D2257/504 , B01J20/226 , B01J20/262 , B01J20/28033 , Y02C10/10
Abstract: Disclosed herein is polymer membrane for gas separation or concentration which contains a hybrid nanoporous material, an application thereof, and a manufacturing method thereof.Especially, the hybrid nanoporous material has a window size of 4 Å to 15 Å or has gas adsorption characteristics for a gas to be separated, which is different from those for other gases, and thus the present invention may provide the polymer membrane having improved gas permeation selectivity, an application thereof, and a manufacturing method thereof.
-
Patent Agency Ranking
3.发明申请METHOD FOR PRODUCING LACTIDE DIRECTLY FROM LACTIC ACID AND A CATALYST USED THEREIN 有权从乳酸直接生产乳酸的方法及其使用的催化剂公开(公告)号：US20150239863A1
公开(公告)日：2015-08-27
申请号：US14422526
申请日：2013-04-24
Inventor： Dong Won Hwang , Jong-San Chang , Pravin P. Upware , U-Hwang Lee , Young Kyu Hwang
CPC classification number: B01J23/14 , B01J21/04 , B01J21/063 , B01J21/066 , B01J21/08 , B01J29/0308 , B01J29/405 , B01J29/7057 , B01J35/0006 , B01J35/002 , B01J37/031 , B01J37/035 , C01G19/02 , C07D319/10 , C07D319/12
Abstract: The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.
Abstract translation: 本发明提供一种在含有锡化合物，优选锡（IV）化合物的催化剂存在下使乳酸进行脱水反应直接生产丙交酯的方法，其中丙交酯可直接或通过一步从乳酸 酸，而不经过生产或分离乳酸低聚物的步骤。 本发明的方法具有不会损失乳酸，乳酸转化率高，对光学纯丙交酯具有高选择性，并保持催化剂寿命长的优点。 此外，由于乳酸低聚物不是或几乎不产生，内消旋 - 丙交酯的选择性低，所以该方法还具有可以节省除去或纯化成本的优点。
-
4.发明申请METHOD FOR RECOVERING INDIUM FROM INDIUM CONTAINING SOLUTION OR MIXTURE 审中-公开用于从包含溶液或混合物的溶液中回收印刷物的方法公开(公告)号：US20150292058A1
公开(公告)日：2015-10-15
申请号：US14648064
申请日：2013-01-18
Inventor： U-Hwang Lee , Jong-San Chang , Sue Kyung Lee , Young Kyu Hwang , Dong Won Hwang , Da Hye Jeon , Kyu Eun Shim
CPC classification number: C22B58/00 , B01J20/0292 , B01J20/18 , C02F1/281 , C02F2101/10 , C02F2103/023 , C02F2103/08 , C02F2103/346 , C22B7/00
Abstract: The present invention relates to a method for recovering indium in a high selectivity and a high efficiency from an indium-containing solution, dispersion or mixture such as seawater, industrial water, waste water, cooling water, a solution extracted from wastes of electronic products such as display panel, or the like.
Abstract translation: 本发明涉及从含铟溶液，分散体或混合物如海水，工业用水，废水，冷却水，从电子产品的废物中提取的溶液，以高选择性和高效率回收铟的方法， 作为显示面板等。
-
5.发明申请INORGANIC-ORGANIC HYBRID NANOPOROUS MATERIAL WITH NITROGEN SELECTIVE ADSORPTIVITY AND METHOD FOR SEPARATING NITROGEN-CONTANING GAS MIXTURE USING THE SAME 有权具有氮选择性吸附性的无机有机混合纳米材料和使用其分离氮气相混合气体的方法公开(公告)号：US20160089637A1
公开(公告)日：2016-03-31
申请号：US14866345
申请日：2015-09-25
Inventor： Jong-San Chang , Young Kyu Hwang , Ji Woong Yoon , Do-Young Hong , U-Hwang Lee , Sukyung Lee , Kyung Ho Cho , Dong Won Hwang , Youn-Sang Bae , Seung-Joon Lee
IPC: B01D71/02 , B01J20/28 , C01B23/00 , C01B21/04 , B01D69/08 , C10L3/10 , B01D53/22 , B01D53/047 , B01D53/04 , B01J20/22 , C01B13/02
CPC classification number: B01D53/0462 , B01D53/02 , B01D53/047 , B01D53/22 , B01D53/228 , B01D2053/224 , B01D2253/10 , B01D2253/1122 , B01D2253/20 , B01D2253/204 , B01D2253/308 , B01D2256/245 , B01D2257/102 , B01J20/223 , B01J20/28033 , C01B13/0262 , C01B21/0455 , C01B23/0057 , C01B2210/0015 , C01B2210/0046 , C01B2210/007 , C10L3/105
Abstract: The present invention relates to a nitrogen adsorbent having nitrogen selective adsorptivity by including an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/g in a skeleton, surface or pore; and use thereof, such as a device separating nitrogen from a gas mixture containing nitrogen and methane, a pressure swing adsorption separation device and a temperature swing adsorption separation device for separating nitrogen provided, a method for separating nitrogen and methane from a gas mixture containing nitrogen and methane, a device for separating nitrogen, oxygen or argon, a method for separating nitrogen, oxygen or argon from a gas mixture containing nitrogen, oxygen or argon, and a method for preparing nitrogen or high purity inert gas all separated from a gas mixture containing nitrogen and inert gas.
Abstract translation: 本发明涉及具有氮选择性吸附性的氮吸附剂，它包括在骨架，表面或孔中具有密度为0.2mmol / g〜10mmol / g的配位不饱和金属部位的有机 - 无机杂化纳米多孔材料; 及其使用方法，例如从含有氮和甲烷的气体混合物中分离氮气的装置，变压吸附分离装置和用于分离氮气的变温吸附分离装置，用于从含有氮气和甲烷的气体混合物中分离氮和甲烷的方法 和甲烷，用于分离氮气，氧气或氩气的装置，从氮气，氧气或氩气的气体混合物中分离氮气，氧气或氩气的方法，以及从气体混合物中分离出的氮气或高纯度惰性气体的方法 含氮和惰性气体。
-
公开(公告)号：US09687772B2
公开(公告)日：2017-06-27
申请号：US14866345
申请日：2015-09-25
Inventor： Jong-San Chang , Young Kyu Hwang , Ji Woong Yoon , Do-Young Hong , U-Hwang Lee , Sukyung Lee , Kyung Ho Cho , Dong Won Hwang , Youn-Sang Bae , Seung-Joon Lee
IPC: B01D53/04 , B01J20/22 , B01J20/28 , C01B23/00 , C01B21/04 , C01B13/02 , C10L3/10 , B01D53/22 , B01D53/047 , B01D53/02
CPC classification number: B01D53/0462 , B01D53/02 , B01D53/047 , B01D53/22 , B01D53/228 , B01D2053/224 , B01D2253/10 , B01D2253/1122 , B01D2253/20 , B01D2253/204 , B01D2253/308 , B01D2256/245 , B01D2257/102 , B01J20/223 , B01J20/28033 , C01B13/0262 , C01B21/0455 , C01B23/0057 , C01B2210/0015 , C01B2210/0046 , C01B2210/007 , C10L3/105
Abstract: The present invention relates to a nitrogen adsorbent having nitrogen selective adsorptivity by including an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/g in a skeleton, surface or pore; and use thereof, such as a device separating nitrogen from a gas mixture containing nitrogen and methane, a pressure swing adsorption separation device and a temperature swing adsorption separation device for separating nitrogen provided, a method for separating nitrogen and methane from a gas mixture containing nitrogen and methane, a device for separating nitrogen, oxygen or argon, a method for separating nitrogen, oxygen or argon from a gas mixture containing nitrogen, oxygen or argon, and a method for preparing nitrogen or high purity inert gas all separated from a gas mixture containing nitrogen and inert gas.
-
公开(公告)号：US09561492B2
公开(公告)日：2017-02-07
申请号：US14869138
申请日：2015-09-29
Inventor： Dong Won Hwang , Jong-San Chang , Pravin P. Upare , U-Hwang Lee , Young Kyu Hwang
IPC: C07D319/00 , B01J23/14 , C07D319/10 , C07D319/12 , B01J21/04 , B01J21/06 , B01J21/08 , B01J35/00 , C01G19/02 , B01J37/03 , B01J29/03 , B01J29/40 , B01J29/70
CPC classification number: B01J23/14 , B01J21/04 , B01J21/063 , B01J21/066 , B01J21/08 , B01J29/0308 , B01J29/405 , B01J29/7057 , B01J35/0006 , B01J35/002 , B01J37/031 , B01J37/035 , C01G19/02 , C07D319/10 , C07D319/12
Abstract: The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.
-
-
-
-
-
-
Search Results
7
records
(took 0.017 seconds)
