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    Method for producing cerium dioxide nanopowder by flame spray pyrolysis and cerium dioxide nanopowder produced by the method
    1.
    发明授权
    Method for producing cerium dioxide nanopowder by flame spray pyrolysis and cerium dioxide nanopowder produced by the method 有权
    通过火焰喷射热解制备二氧化铈纳米粉末的方法和通过该方法制备的二氧化铈纳米粉末

    公开(公告)号：US08187562B2

    公开(公告)日：2012-05-29

    申请号：US12953668

    申请日：2010-11-24

    申请人： Han Kwon Chang ,  Hee Dong Jang ,  Dae Sup Kil ,  Kuk Cho ,  Sung-Wook Cho

    发明人： Han Kwon Chang ,  Hee Dong Jang ,  Dae Sup Kil ,  Kuk Cho ,  Sung-Wook Cho

    IPC分类号： C01F17/00

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01F17/0043 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/64 ,  Y10S977/775 ,  Y10T428/2982

    摘要： Disclosed is a method for producing a cerium dioxide nanopowder by flame spray pyrolysis. The method comprises dissolving a cerium compound in an organic solvent to prepare a precursor solution, atomizing the precursor solution into microdroplets using an ultrasonic atomizer, transferring the microdroplets together with an argon gas as a carrier gas to a central portion of a high-temperature diffusion flame burner, subjecting the microdroplets to pyrolysis and oxidation in the central portion of the diffusion flame burner to produce a cerium dioxide nanopowder, and collecting the cerium dioxide nanopowder using a collector. According to the method, a cerium dioxide nanopowder can be continuously produced on a large scale by flame spray pyrolysis. In addition, the particle size and uniformity of the cerium dioxide nanopowder can be controlled by appropriately selecting the kind of the solvent and the concentration of the raw material. Furthermore, flame spray pyrolysis allows the cerium dioxide to have a fluorite crystal structure.

    摘要翻译： 公开了通过火焰喷雾热解制备二氧化铈纳米粉末的方法。 该方法包括将铈化合物溶解在有机溶剂中以制备前体溶液，使用超声波雾化器将前体溶液雾化成微滴，将微滴与作为载气的氩气一起转移到高温扩散的中心部分 火焰燃烧器，使微滴在扩散火焰燃烧器的中心部分进行热解和氧化，产生二氧化铈纳米粉末，并使用收集器收集二氧化铈纳米粉末。 根据该方法，二氧化铈纳米粉末可以通过火焰喷射热解大规模连续生产。 此外，可以通过适当选择溶剂的种类和原料的浓度来控制二氧化铈纳米粉末的粒径和均匀性。 此外，火焰喷雾热解允许二氧化铈具有萤石晶体结构。

    METHOD FOR PRODUCING CERIUM DIOXIDE NANOPOWDER BY FLAME SPRAY PYROLYSIS AND CERIUM DIOXIDE NANOPOWDER PRODUCED BY THE METHOD
    2.
    发明申请
    METHOD FOR PRODUCING CERIUM DIOXIDE NANOPOWDER BY FLAME SPRAY PYROLYSIS AND CERIUM DIOXIDE NANOPOWDER PRODUCED BY THE METHOD 有权
    通过火焰喷射热分解和二氧化硅纳米粒子生产二氧化硅纳米粒子的方法

    公开(公告)号：US20110281112A1

    公开(公告)日：2011-11-17

    申请号：US12953668

    申请日：2010-11-24

    申请人： Han Kwon CHANG ,  Hee Dong Jang ,  Dae Sup Kil ,  Kuk Cho ,  Sung-Wook Cho

    发明人： Han Kwon CHANG ,  Hee Dong Jang ,  Dae Sup Kil ,  Kuk Cho ,  Sung-Wook Cho

    IPC分类号： C01F17/00 ,  B82Y40/00 ,  B82Y30/00

    CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01F17/0043 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/64 ,  Y10S977/775 ,  Y10T428/2982

    摘要： Disclosed is a method for producing a cerium dioxide nanopowder by flame spray pyrolysis. The method comprises dissolving a cerium compound in an organic solvent to prepare a precursor solution, atomizing the precursor solution into microdroplets using an ultrasonic atomizer, transferring the microdroplets together with an argon gas as a carrier gas to a central portion of a high-temperature diffusion flame burner, subjecting the microdroplets to pyrolysis and oxidation in the central portion of the diffusion flame burner to produce a cerium dioxide nanopowder, and collecting the cerium dioxide nanopowder using a collector. According to the method, a cerium dioxide nanopowder can be continuously produced on a large scale by flame spray pyrolysis. In addition, the particle size and uniformity of the cerium dioxide nanopowder can be controlled by appropriately selecting the kind of the solvent and the concentration of the raw material. Furthermore, flame spray pyrolysis allows the cerium dioxide to have a fluorite crystal structure.

    摘要翻译： 公开了通过火焰喷雾热解制备二氧化铈纳米粉末的方法。 该方法包括将铈化合物溶解在有机溶剂中以制备前体溶液，使用超声波雾化器将前体溶液雾化成微滴，将微滴与作为载气的氩气一起转移到高温扩散的中心部分 火焰燃烧器，使微滴在扩散火焰燃烧器的中心部分进行热解和氧化，产生二氧化铈纳米粉末，并使用收集器收集二氧化铈纳米粉末。 根据该方法，二氧化铈纳米粉末可以通过火焰喷射热解大规模连续生产。 此外，可以通过适当选择溶剂的种类和原料的浓度来控制二氧化铈纳米粉末的粒径和均匀性。 此外，火焰喷雾热解允许二氧化铈具有萤石晶体结构。

    Method for preparing titanium powder with low oxygen concentration
    5.
    发明授权
    Method for preparing titanium powder with low oxygen concentration 有权
    低浓度钛粉的制备方法

    公开(公告)号：US08449646B1

    公开(公告)日：2013-05-28

    申请号：US13551399

    申请日：2012-07-17

    申请人： Jae-Won Lim ,  Jung-Min Oh ,  Back-Kyu Lee ,  Chang-Youl Suh ,  Sung-Wook Cho

    发明人： Jae-Won Lim ,  Jung-Min Oh ,  Back-Kyu Lee ,  Chang-Youl Suh ,  Sung-Wook Cho

    IPC分类号： B22F9/22

    CPC分类号： B22F9/22 ,  C22C1/0458 ,  C22C1/06 ,  C22C14/00

    摘要： Disclosed is a method for preparing low-oxygen titanium powders. The method includes (a) separately placing titanium base powders and calcium in a deoxidation container, (b) deoxidizing the titanium base powders by heating an inner part of the deoxidation container at a temperature of 850° C. to 1050° C. so that the calcium is evaporated to make contact with the titanium base powders, (c) removing calcium oxide from surfaces of titanium powders, which are obtained by deoxidizing the titanium base powders in step (b), by washing the titanium powders, and (d) drying the titanium powders subject to the removing of the calcium oxide in step (c).

    摘要翻译： 公开了一种制备低氧钛粉末的方法。 该方法包括（a）将钛基粉末和钙分别放入脱氧容器中，（b）通过在850℃至1050℃的温度下加热脱氧容器的内部部分来对钛基粉末进行脱氧， 蒸发钙与钛基粉末接触，（c）通过洗涤钛粉末将步骤（b）中的钛基粉末脱氧得到的钛粉表面除去氧化钙，和（d） 干燥步骤（c）中除去氧化钙的钛粉末。

    Process for preparing 4-chloro-3-hydroxybutanoic acid ester
    6.
    发明申请
    Process for preparing 4-chloro-3-hydroxybutanoic acid ester 审中-公开
    制备4-氯-3-羟基丁酸酯的方法

    公开(公告)号：US20060264652A1

    公开(公告)日：2006-11-23

    申请号：US10553170

    申请日：2004-04-14

    申请人： Sung-Wook Cho ,  Jay-Hyok Chang ,  Kyu-Woong Lee ,  Ki-Kon Lee ,  Byung-Ran So ,  Hyun-Ik Shin

    发明人： Sung-Wook Cho ,  Jay-Hyok Chang ,  Kyu-Woong Lee ,  Ki-Kon Lee ,  Byung-Ran So ,  Hyun-Ik Shin

    IPC分类号： C07C253/02

    CPC分类号： C07C253/00 ,  C07B2200/07 ,  C07C67/22 ,  C07C253/16 ,  C07C69/675 ,  C07C255/12 ,  C07C255/15

    摘要： The present invention relates to a process for preparing 4-chloro-3-hydroxybutanoic acid ester, an intermediate for preparing atorvastatin, in high purity and yield, by comprising the steps of 1) reacting epichlorohydrin of formula (2) with cyanide of formula (3) under the condition of pH ranging from 7 to 8, to form the 4-chloro-3-hydroxybutyronitrile of formula (4) and 2a) dissolving the 4-chloro-3-hydroxybutyronitrile of formula (4) in an alcoholic solvent and reacting it with hydrogen chloride, or 2b) reacting the 4-chloro-3-hydroxybutyronitrile of formula (4) in an alcoholic solvent saturated with hydrogen chloride, to form the 4-chloro-3-hydroxybutyronitrile acid ester of formula (I).

    摘要翻译： 本发明涉及一种制备4-氯-3-羟基丁酸酯的方法，该方法是高纯度和收率的阿托伐他汀制备中间体，包括以下步骤：1）使式（2）的表氯醇与式（2）的氰化物反应， 3）在pH为7至8的条件下，形成式（4）的4-氯-3-羟基丁腈和2a）将式（4）的4-氯-3-羟基丁腈溶解在醇溶剂中， 使其与氯化氢反应，或2b）使式（4）的4-氯-3-羟基丁腈在饱和氯化氢的醇溶剂中反应，形成式（I）的4-氯-3-羟基丁腈酸酯。

    Aromatic ring-containing compound for a resist underlayer and resist underlayer composition
    7.
    发明授权
    Aromatic ring-containing compound for a resist underlayer and resist underlayer composition 有权
    用于抗蚀剂底层和抗蚀剂下层组合物的芳香族环化合物

    公开(公告)号：US08637219B2

    公开(公告)日：2014-01-28

    申请号：US12980584

    申请日：2010-12-29

    申请人： Sung-Wook Cho ,  Hwan-Sung Cheon ,  Min-Soo Kim ,  Seung-Bae Oh ,  Jee-Yun Song

    发明人： Sung-Wook Cho ,  Hwan-Sung Cheon ,  Min-Soo Kim ,  Seung-Bae Oh ,  Jee-Yun Song

    IPC分类号： G03F7/004 ,  C07C13/24

    CPC分类号： C07C33/26 ,  C07C33/36 ,  C07C2601/14 ,  C07C2603/54 ,  G03F7/091

    摘要： An aromatic ring-containing compound for a resist underlayer and a resist underlayer composition, the aromatic ring-containing compound being represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, R1 to R6 are each independently a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C5 to C20 aromatic ring group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C3 to C20 cycloalkenyl group, a substituted or unsubstituted C2 to C20 heteroaryl group, or a substituted or unsubstituted C2 to C20 heterocycloalkyl group, X1 to X6 are each independently hydrogen, a hydroxy group (—OH), a substituted or unsubstituted alkyl amine group, a substituted or unsubstituted alkoxy group, or an amino group (—NH2), n1 to n6 are each independently 0 or 1, and 1≦n1+n2+n3+n4+n5+n6≦6.

    摘要翻译： 用于抗蚀剂底层的芳香族含环化合物和抗蚀剂下层组合物，所述含芳环的化合物由以下化学式1表示：其中，在化学式1中，R 1〜R 6各自独立地为取代或未取代的C1〜 取代或未取代的C 3至C 20芳环，取代或未取代的C 3至C 20环烷基，取代或未取代的C 3至C 20环烯基，取代或未取代的C 2至C 20杂芳基，或取代或未取代的 C2〜C20杂环烷基，X1〜X6各自独立地为氢，羟基（-OH），取代或未取代的烷基胺基，取代或未取代的烷氧基或氨基（-NH2），n1〜n6分别为 各自独立地为0或1，以及1 @ n1 + n2 + n3 + n4 + n5 + n6 @ 6。