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    PROCESS FOR PURIFYING OCTAFLUOROCYCLOBUTANE, PROCESS FOR PREPARING THE SAME, AND USE THEREOF
    23.
    发明公开
    PROCESS FOR PURIFYING OCTAFLUOROCYCLOBUTANE, PROCESS FOR PREPARING THE SAME, AND USE THEREOF 有权
    纯化八氟环丁烷的方法，其制备方法及其用途

    公开(公告)号：EP1307416A2

    公开(公告)日：2003-05-07

    申请号：EP02729558.3

    申请日：2002-01-11

    申请人： SHOWA DENKO K.K.

    发明人： HORIBA, Minako,c/o KAWASAKI PLANT,SHOWA DENKO KK ,  SUZUKI,Yasuhiro,c/o KAWASAKI PLANT,SHOWA DENKO KK

    IPC分类号： C07C17/395 ,  C07C17/389 ,  C07C17/269 ,  C07C23/06 ,  H01L21/3065 ,  C11D7/50

    CPC分类号： C07C23/06 ,  C07C17/269 ,  C07C17/389 ,  C07C17/395

    摘要： A process for purifying octafluorocyclobutane according to the present invention is characterized by contacting a crude octafluorocyclobutane containing impurities with an impurity decomposing agent under elevated temperature and then with an adsorbent to substantially remove the impurities from the crude octafluorocyclobutane. According to the purification process or preparation process of octafluorocyclobutane of the present invention, the impurities such as fluorocarbon can be substantially removed and a high-purity octafluorocyclobutane can be easily obtained. The octafluorocyclobutane obtained by the purification process of the present invention is substantially free of impurities and therefore, can be used as an etching or cleaning gas for use in the production process of a semiconductor device or the like.

    摘要翻译： 根据本发明的纯化八氟环丁烷的方法的特征在于使含杂质的粗八氟环丁烷与杂质分解剂在升高的温度下接触，然后与吸附剂接触以基本上从粗八氟环丁烷中除去杂质。 根据本发明的八氟环丁烷的纯化方法或制备方法，可以基本除去诸如氟碳的杂质，并且可以容易地获得高纯度的八氟环丁烷。 通过本发明的纯化方法获得的八氟环丁烷基本上不含杂质，因此可以用作用于半导体器件等的生产过程中的蚀刻或清洁气体。

    METHOD FOR PRODUCING TETRAFLUOROETHYLENE
    24.
    发明公开
    METHOD FOR PRODUCING TETRAFLUOROETHYLENE 有权
    VERFAHREN ZUR HERSTELLUNG VON TETRAFLUORETHYLEN

    公开(公告)号：EP1260494A1

    公开(公告)日：2002-11-27

    申请号：EP01906334.6

    申请日：2001-02-27

    申请人： Daikin Industries, Ltd.

    发明人： YOSHII, Shigeyuki, c/o Yodogawa Works ,  HOMOTO, Yukio, c/o Yodogawa Works

    IPC分类号： C07C17/383 ,  C07C21/185 ,  C07C17/269

    CPC分类号： C07C17/269 ,  C07C17/38 ,  C07C17/383 ,  C07C21/18 ,  C07C21/185

    摘要： There is provided a process for recovering tetrafluoroethylene wherein an amount of energy required to obtain TFE is reduced.
       In the process for producing a TFE mixture as an intended mixture which contains TFE at a higher concentration from a raw material mixture (10) which contains TFE, a component of which boiling point is lower than that of TFE and a component of which boiling point is higher than that of TFE,

    (1) the raw material is subjected to a preliminary distillation treatment (12) so as to obtain (a) a first fraction (15) which contains at least a portion of the component of which boiling point is higher than that of TFE and (b) a second fraction (14) as the balance which contains TFE and the component of which boiling point is lower than that of TFE, and then
    (2) the second fraction is subjected to a main distillation treatment (16) so as to obtain (c) a third faction
    (20) formed by distilling off the component of which boiling point is lower than that of TFE, and (d) a fourth fraction (18) as the intended mixture being the balance which contains TFE.

    摘要翻译： 提供了一种回收四氟乙烯的方法，其中获得TFE所需的能量减少。 在从含有TFE的原料混合物（10）中含有较高浓度的TFE的TFE混合物的制造方法中，沸点低于TFE的成分和沸点的成分 高于TFE，（1）对原料进行预蒸馏处理（12），得到（a）第一馏分（15），其含有至少部分沸点为 高于TFE，（b）作为余量的第二馏分（14），其含有TFE，沸点低于TFE的成分，然后（2）将第二馏分进行主蒸馏处理 （16），以获得（c）通过蒸馏沸点低于TFE的组分形成的第三组（20），和（d）作为预期混合物的第四组分（18），其为余量 其中包含TFE。

    CATALYSTS FOR HALOGENATED HYDROCARBON PROCESSING, THEIR PRECURSORS AND THEIR PREPARATION AND USE
    25.
    发明公开
    CATALYSTS FOR HALOGENATED HYDROCARBON PROCESSING, THEIR PRECURSORS AND THEIR PREPARATION AND USE 失效
    催化剂的卤代烷烃处理及其前体的制备和使用

    公开(公告)号：EP0968053A4

    公开(公告)日：2000-01-05

    申请号：EP96942072

    申请日：1996-11-26

    申请人： DU PONT

    发明人： DUZICK TIMOTHY C ,  RAO VELLIYUR NOTT MALLIKARJUNA ,  SUBRAMANIAN MUNIRPALLAM A

    IPC分类号： B01J27/13 ,  C07B61/00 ,  C07C17/00 ,  C07C17/20 ,  C07C17/23 ,  C07C17/269 ,  C07C21/18 ,  B01J23/58 ,  C07C17/25

    CPC分类号： C07C17/269 ,  B01J27/13 ,  C07C17/00 ,  C07C17/206 ,  C07C17/23 ,  C07C21/18

    摘要： Processes are disclosed for decreasing the chlorine to carbon ratio for halogenated hydrocarbons containing chlorine and from 1 to 6 carbon atoms, in the presence of a multiphase catalyst. The processes each involve (1) preparing a single phase solid catalyst precursor which has a structure that collapses at a temperature of about 400 °C or less and has the formula (NH3)6Ru1-r-sCorCrsMF6, where r+s is in the range of 0.00 to 0.99, and M is at least one trivalent metal selected from the group consisting of Al, Cr, Fe, V, Sc and Ga; and (2) producing the multiphase catalyst by heating the single phase solid catalyst precursor to about 400 °C or less in a non-oxidizing atmosphere to produce a multiphase composition wherein a phase containing ruthenium is homogeneously dispersed with a phase containing metal fluoride. Also disclosed are single phase fluoride compositions having the formula (NH3)6Ru1-r-sCorCrsMF6, where r+s is in the range of 0.00 to 0.99, and M is at least one trivalent element selected from the group consisting of Al, Cr, Fe, V, Sc and Ga; and multiphase catalyst compositions consisting essentially of metallic ruthenium and fluorides of at least one element selected from the group consisting of Al, Co, Cr, Fe, V, Sc and Ga, wherein the ruthenium is homogeneously dispersed with phases of the fluorides.