Process for purifying fluoroethanes and chlorofluoroethanes
    1.
    发明授权
    Process for purifying fluoroethanes and chlorofluoroethanes 失效
    氟乙腈和氯氟乙烷的纯化方法

    公开(公告)号:US5367103A

    公开(公告)日:1994-11-22

    申请号:US995128

    申请日:1992-12-22

    CPC分类号: C07C17/395

    摘要: 1,1,1.Trifluoro-2-fluoroethane (HFC 134A), respectively 1,1,1-trifluoro-2, 2-dichloroethane (HCFC 123) 1,1,1-trifluoro-2-chloro, 2-fluoroethane (HCFC 124) and pentafluoroethane (HFC 125), are purified from impurities respectively consisting of 1,1-difluoro-2-chloroethylene (HCFC 1122) and of difluorodichloroethylene (CFC 1112A and CFC 1112), by reacting in the liquid state respectively HFC 134A or HCFC 123, HCFC 124 and HFC 125 containing the relative impurities, with elemental fluorine, at temperatures ranging from -80.degree. to -40.degree. C.

    摘要翻译: 1,1,1-三氟-2-氟乙烷(HFC 134A)分别为1,1,1-三氟-2,2-二氯乙烷(HCFC 123)1,1,1-三氟-2-氯,2-氟乙烷( HCFC 124)和五氟乙烷(HFC 125)从分别由1,1-二氟-2-氯乙烯(HCFC 1122)和二氟二氯乙烯(CFC 1112A和CFC 1112)组成的杂质中纯化,分别以液态反应HFC 134A 或含有相对杂质的元素氟的HCFC 123,HCFC 124和HFC 125在-80至-40℃的温度下进行。

    Process for the preparation of halogenated polyethers
    4.
    发明授权
    Process for the preparation of halogenated polyethers 失效
    卤代聚醚的制备方法

    公开(公告)号:US5292961A

    公开(公告)日:1994-03-08

    申请号:US71876

    申请日:1993-06-04

    摘要: Process for the preparation of halogenated polyethers of the general formula: ##STR1## wherein X=Cl or F, R.sub.F and R'.sub.F either equal to or different from each other, are selected from fluorinated alkyl radicals with from 1 to 20 carbon atoms, cycloalkyl, heterocyclic, alkylcycloalkyl or cycloalkylalkyl radicals, having from 5 to 20 carbon atoms, said radicals possibly containing also other halogen atoms different from fluorine and possibly ethereal oxygen atoms, by reaction with a fluoroxy or chloroxy compound of the formula: R'.sub.F OX with a fluorovinylether of the general formula: R.sub.F O--CF.dbd.CF.sub.2.

    摘要翻译: 制备以下通式的卤代聚醚的方法:其中X = Cl或F,RF和R'F彼此相同或不同,选自具有1至20个碳原子的氟化烷基, 具有5至20个碳原子的环烷基,杂环基,烷基环烷基或环烷基烷基,所述基团可能还含有与氟和可能的醚氧原子不同的其它卤素原子,通过与下式的氟氧基或氯氧化合物反应:R'FOX与 通式为:RFO-CF = CF 2的氟乙烯基醚。