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    METHOD FOR SYNTHESIZING RARE EARTH METAL EXTRACTANT
    1.
    发明申请
    METHOD FOR SYNTHESIZING RARE EARTH METAL EXTRACTANT 有权
    合成稀土金属萃取剂的方法

    公开(公告)号：US20130123534A1

    公开(公告)日：2013-05-16

    申请号：US13808220

    申请日：2011-07-01

    申请人： Kazuaki Sakaki ,  Hiroto Sugahara ,  Tetsuya Kume ,  Masaki Ohashi ,  Hirochika Naganawa ,  Kojiro Shimojo

    发明人： Kazuaki Sakaki ,  Hiroto Sugahara ,  Tetsuya Kume ,  Masaki Ohashi ,  Hirochika Naganawa ,  Kojiro Shimojo

    IPC分类号： C07C231/02

    CPC分类号： C07C231/02 ,  C07C235/06 ,  C22B3/08 ,  C22B3/44 ,  C22B47/00 ,  C22B59/00 ,  Y02P10/234 ,  Y02W30/54

    摘要： A rare earth metal extractant containing, as the extractant component, dialkyldiglycol amide acid which is excellent in breaking down light rare earth elements is reacted in diglycolic acid (X mol) and an esterification agent (Y mol) at a reaction temperature of 70° C. or more and for a reaction time of one hour or more such that the mol ratio of Y/X is 2.5 or more, and is subjected to vacuum concentration. Subsequently, a reaction intermediate product is obtained by removing unreacted products and reaction residue. Then a nonpolar or low-polar solvent which is an organic solvent for forming an organic phase during solvent extraction of the rare earth metal and which is capable of dissolving dialkyldiglycol amide acid is added as the reaction solvent, and the reaction intermediate product is reacted with dialkyl amine (Z mol) such that the mol ratio of Z/X is 0.9 or more.

    摘要翻译： 在二氯乙酸（X mol）和酯化剂（Y mol）中，在70℃的反应温度下，将分解轻稀土元素的二烷基二乙二醇酰胺酸作为萃取剂成分的稀土金属萃取剂反应 反应时间为1小时以上，Y / X的摩尔比为2.5以上，进行真空浓缩。 随后，通过除去未反应的产物和反应残余物获得反应中间产物。 然后加入作为在稀土金属溶剂萃取中形成有机相并能够溶解二烷基二乙酰胺酸的有机溶剂的非极性或低极性溶剂作为反应溶剂，将反应中间产物与 二烷基胺（Z摩尔），使Z / X的摩尔比为0.9以上。

    Method for synthesizing rare earth metal extractant
    2.
    发明授权
    Method for synthesizing rare earth metal extractant 有权
    稀土金属萃取剂的合成方法

    公开(公告)号：US09133100B2

    公开(公告)日：2015-09-15

    申请号：US13808220

    申请日：2011-07-01

    申请人： Kazuaki Sakaki ,  Hiroto Sugahara ,  Tetsuya Kume ,  Masaki Ohashi ,  Hirochika Naganawa ,  Kojiro Shimojo

    发明人： Kazuaki Sakaki ,  Hiroto Sugahara ,  Tetsuya Kume ,  Masaki Ohashi ,  Hirochika Naganawa ,  Kojiro Shimojo

    IPC分类号： C07C229/00 ,  C07C231/02 ,  C07C235/06 ,  C22B47/00 ,  C22B59/00 ,  C22B3/08 ,  C22B3/44

    CPC分类号： C07C231/02 ,  C07C235/06 ,  C22B3/08 ,  C22B3/44 ,  C22B47/00 ,  C22B59/00 ,  Y02P10/234 ,  Y02W30/54

    摘要： A rare earth metal extractant containing, as the extractant component, dialkyldiglycol amide acid which is excellent in breaking down light rare earth elements is reacted in diglycolic acid (X mol) and an esterification agent (Y mol) at a reaction temperature of 70° C. or more and for a reaction time of one hour or more such that the mol ratio of Y/X is 2.5 or more, and is subjected to vacuum concentration. Subsequently, a reaction intermediate product is obtained by removing unreacted products and reaction residue. Then a nonpolar or low-polar solvent which is an organic solvent for forming an organic phase during solvent extraction of the rare earth metal and which is capable of dissolving dialkyldiglycol amide acid is added as the reaction solvent, and the reaction intermediate product is reacted with dialkyl amine (Z mol) such that the mol ratio of Z/X is 0.9 or more.

    摘要翻译： 在二氯乙酸（X mol）和酯化剂（Y mol）中，在70℃的反应温度下，含有作为萃取剂成分的分解轻稀土元素的二烷基二乙二醇酰胺酸的稀土金属萃取剂 反应时间为1小时以上，Y / X的摩尔比为2.5以上，进行真空浓缩。 随后，通过除去未反应的产物和反应残余物获得反应中间产物。 然后加入作为在稀土金属溶剂萃取中形成有机相并能够溶解二烷基二乙酰胺酸的有机溶剂的非极性或低极性溶剂作为反应溶剂，将反应中间产物与 二烷基胺（Z摩尔），使Z / X的摩尔比为0.9以上。

    METHOD FOR EXTRACTING AND SEPARATING RARE EARTH ELEMENTS
    3.
    发明申请
    METHOD FOR EXTRACTING AND SEPARATING RARE EARTH ELEMENTS 有权
    提取和分离稀土元素的方法

    公开(公告)号：US20100319491A1

    公开(公告)日：2010-12-23

    申请号：US12813698

    申请日：2010-06-11

    申请人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa ,  Hirochika Naganawa ,  Kojiro Shimojo

    发明人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa ,  Hirochika Naganawa ,  Kojiro Shimojo

    IPC分类号： C22B59/00

    CPC分类号： C22B59/00 ,  C22B3/0022 ,  Y02P10/234

    摘要： Solvent extraction from an aqueous phase containing first and second rare earth elements is carried out by contacting an organic phase containing a diglycolamic acid as an extractant and a hydrocarbon or a low-polar alcohol as a solvent, with the aqueous phase below pH 3 for extracting the first rare earth element into the organic phase, back-extracting from the organic phase with an aqueous acid solution for recovering the first rare earth element, and recovering the second rare earth element which has not been extracted into the organic phase and has remained in the aqueous phase.

    摘要翻译： 从含有第一和第二稀土元素的水相中的溶剂萃取通过使含有作为萃取剂的二甘醇酸的有机相和作为溶剂的烃或低极性醇接触，水相低于pH 3进行萃取 将第一稀土元素加入到有机相中，用用于回收第一稀土元素的酸性水溶液从有机相中回收，并回收未萃取到有机相中并保留在第二稀土元素中的第二稀土元素 水相。

    Method for extracting and separating light rare earth element
    5.
    发明授权
    Method for extracting and separating light rare earth element 有权
    轻稀土元素提取分​​离方法

    公开(公告)号：US08802040B2

    公开(公告)日：2014-08-12

    申请号：US13530672

    申请日：2012-06-22

    申请人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa

    发明人： Hiroto Sugahara ,  Kazuaki Sakaki ,  Takehisa Minowa

    IPC分类号： C22B59/00

    CPC分类号： C01F17/0006 ,  C22B3/0022 ,  C22B59/00 ,  Y02P10/234

    摘要： A target light rare earth element is separated from an aqueous solution containing two or more of La, Ce, Pr and Nd by contacting an organic phase containing an extractant with the aqueous solution in a counter-current flow multistage mixer-settler while adding an alkaline solution thereto, and contacting the organic phase with an acid aqueous solution for back-extracting the target element. The extractant is a dialkyl diglycol amic acid having formula: R1R2NCOCH2OCH2COOH wherein R1 and R2 are alkyl, at least one having at least 6 carbon atoms.

    摘要翻译： 将含有萃取剂的有机相与逆流多级混合器 - 沉降器中的水溶液接触，同时加入碱性物质，将含有两种或多种La，Ce，Pr和Nd的水溶液与目标轻稀土元素分离。 并使有机相与酸性水溶液接触，用于反萃取目标元素。 萃取剂是具有式：R 1 R 2 NCOCH 2 OCH 2 COOH的二烷基二甘醇酰胺酸，其中R 1和R 2是烷基，至少有一个具有至少6个碳原子。