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23 条记录 (耗时 0.039 秒)

    Process for preparing polyfluorooxetanes
    6.
    发明授权
    Process for preparing polyfluorooxetanes 失效
    聚氟氧杂环丁烷的制备方法

    公开(公告)号：US5519151A

    公开(公告)日：1996-05-21

    申请号：US205927

    申请日：1994-03-03

    申请人： Viacheslav A. Petrov ,  Bruce E. Smart

    发明人： Viacheslav A. Petrov ,  Bruce E. Smart

    IPC分类号： B01J27/12 ,  B01J27/125 ,  C07D305/08

    CPC分类号： C07D305/08

    摘要： This invention concerns a process for the preparation of polyfluorooxetanes by the reaction of fluoroketones or fluoroepoxides with haloethylenes in the presence of a Lewis acid catalyst. Polyfluorooxetanes are useful as solvents and plasticizers having high thermal stability.

    摘要翻译： 本发明涉及通过在路易斯酸催化剂存在下通过氟代酮或氟代环氧化物与卤代乙烯的反应来制备聚氟氧杂环丁烷的方法。 聚氟氧杂环丁烷可用作具有高热稳定性的溶剂和增塑剂。

    Chlorofluorocarbon isomerization
    7.
    发明授权
    Chlorofluorocarbon isomerization 失效
    氯氟烃异构化

    公开(公告)号：US5416246A

    公开(公告)日：1995-05-16

    申请号：US323321

    申请日：1994-10-14

    申请人： Carl G. Krespan ,  Viacheslav A. Petrov ,  Bruce E. Smart

    发明人： Carl G. Krespan ,  Viacheslav A. Petrov ,  Bruce E. Smart

    IPC分类号： C07C17/23 ,  C07C17/358 ,  C07C19/08 ,  C07C21/18

    CPC分类号： C07C17/358 ,  C07C17/23

    摘要： A process is disclosed for producing a saturated gem-dichloro chlorofluorocarbon product of the formula C.sub.n Cl.sub.a F.sub.b, wherein n is 2 to 12, a is 2 to 4, and b is 4 to 24, and wherein a+b equals 2n+2 when the chlorofluorocarbon is acyclic and equals 2n when the chlorofluorocarbon is cyclic, from a starting material of the same formula which has a lesser thermodynamic stability than the saturated gem-dichloro chlorofluorocarbon product. The process involves isomerizing the starting material in the presence of (1) a catalyst of the formula AlZ.sub.3, where Z is selected from F, Cl and/or Br (provided that AlZ.sub.3 cannot be entirely AlF.sub.3) and (2) an effective amount of promoter selected from the group consisting of is selected from hexafluoropropene, 2-chloropentafluoropropene, perfluorobutenes, perfluoropentenes, perfluorocyclobutene, 1-chlorocyclobutene, 1,2-dichlorocyclobutene, perfluorocyclopentene, 1-chlorocyclopentene, and 1,2-dichlorocyclopentene, and mixtures thereof, to accelerate production of the saturated gem-dichloro chlorofluorocarbon product. Also disclosed is a process for producing a halohydrocarbon of the formula C.sub.n H.sub.c Cl.sub.d F.sub.b from a gem-dichloro product produced by said isomerization (where c is 1 to 4 and c+equals a) which involves hydrodechlorinating the gem-dichloro product.

    摘要翻译： 公开了一种制备式CnClaFb的饱和偕二氯氯氟烃产物的方法，其中n为2至12，a为2至4，b为4至24，并且其中a + b等于2n + 2，当氯氟烃 当氯氟烃是循环的时，它是非循环的并且等于2n，其来自具有比饱和的偕二氯氯氟烃产物更小的热力学稳定性的相同配方的原料。 该方法包括在（1）式AlZ 3的催化剂存在下异构化原料，其中Z选自F，Cl和/或Br（前提是AlZ 3不能完全是AlF 3）和（2）有效量的 选自六氟丙烯，2-氯五氟丙烯，全氟丁烯，全氟戊烯，全氟环丁烯，1-氯环丁烯，1,2-二氯环丁烯，全氟环戊烯，1-氯环戊烯和1,2-二氯环戊烯的助催化剂及其混合物，以及它们的混合物， 加速饱和二氯氯氟碳产品的生产。 还公开了由通过所述异构化（其中c为1至4且c +等于a）产生的偕 - 二氯产物制备式C n H c C d F b的卤代烃的方法，其涉及氢化脱氯柠檬产物。