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公开(公告)号：US20120130111A1
公开(公告)日：2012-05-24
申请号：US13388078
申请日：2009-11-27
Applicant: Jae Cheon Koh , Chul Ung Kim , Yun Min Kim
Inventor： Jae Cheon Koh , Chul Ung Kim , Yun Min Kim
IPC: C07C68/00
Abstract: The present invention provides a method for preparing dialkyl carbonate from urea or alkyl carbamate and alkyl alcohol using an ionic liquid comprising a cation, which produces a hydrogen ion, and a hydrophobic anion containing fluorine with high temperature stability in the presence of catalyst containing a metal oxide or hydrotalcite. Since the present invention can prepare dialkyl carbonate at a pressure lower than those of existing methods, it does not require an expensive pressure control device and peripheral devices for maintaining high pressure including the installation cost. It is also the method for preparing a dialkyl carbonate with high yield, thus improving economical efficiency. Moreover, the method of the present invention hardly produces any waste during the process and is thus an eco-friendly method.
Abstract translation: 本发明提供一种在含有金属的催化剂存在下，使用含有产生氢离子的阳离子的离子液体和含有氟的疏水性阴离子，由脲或烷基氨基甲酸酯和烷基醇制备碳酸二烷基酯的方法， 氧化物或水滑石。 由于本发明可以以比现有方法低的压力制备碳酸二烷基酯，所以不需要昂贵的压力控制装置和用于保持高压的外围装置，包括安装成本。 也是以高产率制备碳酸二烷基酯的方法，从而提高了经济性。 此外，本发明的方法在该方法中几乎不产生浪费，因此是一种环保方法。
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公开(公告)号：US08629295B2
公开(公告)日：2014-01-14
申请号：US13388078
申请日：2009-11-27
Applicant: Jae Cheon Koh , Chul Ung Kim , Yun Min Kim
Inventor： Jae Cheon Koh , Chul Ung Kim , Yun Min Kim
IPC: C07C68/00
Abstract: The present invention provides a method for preparing dialkyl carbonate from urea or alkyl carbamate and alkyl alcohol using an ionic liquid comprising a cation, which produces a hydrogen ion, and a hydrophobic anion containing fluorine with high temperature stability in the presence of catalyst containing a metal oxide or hydrotalcite. Since the present invention can prepare dialkyl carbonate at a pressure lower than those of existing methods, it does not require an expensive pressure control device and peripheral devices for maintaining high pressure including the installation cost. It is also the method for preparing a dialkyl carbonate with high yield, thus improving economical efficiency. Moreover, the method of the present invention hardly produces any waste during the process and is thus an eco-friendly method.
Abstract translation: 本发明提供一种在含有金属的催化剂存在下，使用含有产生氢离子的阳离子的离子液体和含有氟的疏水性阴离子，由脲或烷基氨基甲酸酯和烷基醇制备碳酸二烷基酯的方法， 氧化物或水滑石。 由于本发明可以以比现有方法低的压力制备碳酸二烷基酯，所以不需要昂贵的压力控制装置和用于保持高压的外围装置，包括安装成本。 也是以高产率制备碳酸二烷基酯的方法，从而提高了经济性。 此外，本发明的方法在该方法中几乎不产生浪费，因此是一种环保方法。
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3.发明授权Method for concentrating aqueous tetrafluoroethylene emulsion by electrodialysis and its apparatus 失效通过电渗析浓缩四氟乙烯水溶液的方法及其设备
公开(公告)号：US6045675A
公开(公告)日：2000-04-04
申请号：US43548
申请日：1998-03-19
Applicant: Jung Min Lee , Jae Cheon Koh , Sang Jin Moon , Kwang Joo Kim , Hang Kyo Jin , Chul Ung Kim , Won Uook So
Inventor： Jung Min Lee , Jae Cheon Koh , Sang Jin Moon , Kwang Joo Kim , Hang Kyo Jin , Chul Ung Kim , Won Uook So
CPC classification number: B01D61/422 , B01D57/02 , C08F6/20
Abstract: The present invention relates to a method and an apparatus for concentrating an aqueous PTFE emulsion in which a raw, aqueous PTFE emulsion containing fluorinated surfactants is concentrated by an electrodialysis technique using at least one nonionic surfactant as an anti-flocculation agent and a volatile electrolyte such that the formation of floccules is prevented.
Abstract translation: PCT No.PCT / KR97 / 00142 Sec。 371日期：1998年3月19日 102（e）1998年3月19日PCT PCT 1997年7月18日PCT公布。 第WO98 / 03561号公报 日本1998年1月29日本发明涉及一种浓缩PTFE水性乳液的方法和装置，其中通过电渗析技术使含至少一种非离子表面活性剂作为抗絮凝剂的含氟表面活性剂的原料含水PTFE乳液浓缩 和挥发性电解质，使得防止絮凝物的形成。
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