Purification of saturated halocarbons

    公开(公告)号:US5449846A

    公开(公告)日:1995-09-12

    申请号:US591222

    申请日:1990-10-02

    CPC分类号: C07C17/38 C07C17/395

    摘要: A process for reducing the content of unsaturated impurities in saturated fluorohalocarbons and fluorohalohydrocarbons by contacting the impure saturated fluorohalocarbon and/or fluorohalohydrocarbon in a substantially dry fluid state with a substantially dry amorphous solid metal oxide composition consisting essentially of cupric oxide, cobaltic oxide, silver oxide, manganese dioxide, or a mixture of any two or more thereof, at an effective temperature up to about 300.degree. C.

    Fire extinguishing composition and process
    2.
    发明授权
    Fire extinguishing composition and process 失效
    灭火组合物和工艺

    公开(公告)号:US5393438A

    公开(公告)日:1995-02-28

    申请号:US899282

    申请日:1992-06-16

    CPC分类号: A62D1/0057

    摘要: A process for extinguishing, preventing and controlling fires using a composition containing at least one fluoro-substituted propane selected from the group of 2,2-dichloro-1,1,1-trifluoroethane (CHCl.sub.2 CF.sub.3), 2-chloro-1,1,1,2-tetrafluoroethane (CHClFCF.sub.3), and 1,1,1,2-tetrafluoroethane (CH.sub.2 FCF.sub.3), and mixtures thereof is disclosed. The fluoropropanes can be used in open or enclosed areas with little or no effect on the ozone in the stratosphere and with little effect on the global warming process.

    摘要翻译: 一种使用含有至少一种选自2,2-二氯-1,1,1-三氟乙烷(CHCl 2 CF 3),2-氯-1,1,1-二氯-1,1,1-三氟乙烷的氟代取代丙烷的组合物灭火,防止和控制火灾的方法, 公开了1,2-四氟乙烷(CHClFCF 3)和1,1,1,2-四氟乙烷(CH 2 FCF 3)及其混合物。 氟丙烷可用于开放或封闭的区域,对同温层臭氧几乎没有影响,也不影响全球变暖过程。

    Fire extinguishing composition and process
    4.
    发明授权
    Fire extinguishing composition and process 失效
    灭火组合物和工艺

    公开(公告)号:US5115868A

    公开(公告)日:1992-05-26

    申请号:US671432

    申请日:1991-03-20

    IPC分类号: A62D1/00

    CPC分类号: A62D1/0057

    摘要: A process for extinguishing, preventing and/or controlling fires using a composition containing CHF.sub.3 is disclosed. CHF.sub.3 can be used in volume percentages with air as high as 80% without adversely affecting mammalian habitation, with no effect on the ozone in the stratosphere and with little effect on the global warming process.

    摘要翻译: 公开了使用含有CHF 3的组合物灭火,防止和/或控制火灾的方法。 CHF3可以空气高达80%的体积百分比使用,不会对哺乳动物的居住环境造成不利影响,对平流层的臭氧没有影响,对全球变暖过程几乎没有影响。

    Fire extinguishing composition and process
    5.
    发明授权
    Fire extinguishing composition and process 失效
    灭火组合物和工艺

    公开(公告)号:US5084190A

    公开(公告)日:1992-01-28

    申请号:US436464

    申请日:1989-11-14

    IPC分类号: A62D1/00 A62D1/08

    CPC分类号: A62D1/0057

    摘要: A process for extinguishing, preventing and controlling fires using a composition containing at least one fluoro-substituted propane selected from the group of CF.sub.3 --CHF--CF.sub.3, CF.sub.3 --CF.sub.2 --CHF.sub.2, CF.sub.3 --CFH--CF.sub.2 H, CF.sub.3 --CH.sub.2 --CF.sub.3, CF.sub.3 --CF.sub.2 --CH.sub.2 F, CHF.sub.2 --CF.sub.2 --CHF.sub.2, CF.sub.3 --CF.sub.2 --CHCl.sub.2, CHFCl--CF.sub.2 --CClF.sub.2, CHF.sub.2 --CCl.sub.2 --CF.sub.3, CF.sub.3 --CHCl--CClF.sub.2, CHF.sub.2 --CF.sub.2 --CHClF, CF.sub.3 --CR.sub.2 --CH.sub.2 Cl, CClF.sub.2 --CF.sub.2 --CH.sub.2 F, CF.sub.3 --CH.sub.2 --CClF.sub.2, CHClF--CR.sub.2 --CF.sub.3, CHF.sub.2 --CF.sub.2 --CF.sub.2 Cl, CF.sub.3 --CHCl--CF.sub.3, CF.sub.3 --CHF--CF.sub.2 Cl, and CHF.sub.2 --CFCl--CF.sub.3 is disclosed. The fluoropropanes can be used in open or enclosed areas with little or no effect on the ozone in the stratosphere and with little effect on the global warming process.

    摘要翻译: 使用含有选自CF 3 -CHF-CF 3,CF 3-CF 2 -CHF 2,CF 3-CFH-CF 2 H,CF 3 -CH 2 CF 3,CF 3中的至少一种氟取代丙烷的组合物来扑灭,预防和控制火灾的方法 -CF 2 -CH 2 F,CHF 2-CF 2 -CHF 2,CF 3 -CF 2 -CHCl 2,CHFCl-CF 2 -CClF 2,CHF 2 -CCl 2 -CCl 3,CF 3 -CHCl-CClF 2,CHF 2 -CF 2 -CHClF,CF 3 CR 2 -CH 2 Cl,CClF 2 -CF 2 公开了-CH2F,CF3-CH2-CClF2,CHClF-CR2-CF3,CHF2-CF2-CF2Cl,CF3-CHCl-CF3,CF3-CHF-CF2Cl和CHF2-CFCl-CF3。 氟丙烷可用于开放或封闭的区域,对同温层臭氧几乎没有影响,也不影响全球变暖过程。

    Dehydrohalogenation process
    7.
    发明授权
    Dehydrohalogenation process 失效
    脱卤化氢工艺

    公开(公告)号:US5180860A

    公开(公告)日:1993-01-19

    申请号:US545246

    申请日:1990-06-28

    IPC分类号: C07C17/25

    CPC分类号: C07C17/25

    摘要: A process for the dehydrohalogenation of saturated hydrogen-containing polyhalocarbons using liquid alkali metal acid fluoride and/or alkali metal fluoride compositions to form haloolefins.

    摘要翻译: 使用液态碱金属氟化物和/或碱金属氟化物组合物使饱和含氢多卤代烃脱卤化氢以形成卤代烯烃的方法。

    Halogen exchange fluorination
    9.
    发明授权
    Halogen exchange fluorination 失效
    卤素交换氟化

    公开(公告)号:US4990701A

    公开(公告)日:1991-02-05

    申请号:US497067

    申请日:1990-03-20

    IPC分类号: C01D3/02 C07C17/20 C07C19/08

    CPC分类号: C07C17/208

    摘要: A process for halogen exchange fluorination by contacting a halocarbon having a replaceable halogen other than fluorine with KF.nHF wherein n is 0.5-3 to provide a fluorinated hydrocarbon having at least one more fluorine than the starting halocarbon and, optionally, regenerating the KF.nHF with additional HF, or in a continuous process, with excess HF in the feed.

    摘要翻译: 通过将具有氟以外的可替换的卤素的卤代烃与KF.nHF接触进行卤素交换氟化的方法,其中n为0.5-3,以提供具有比起始卤化碳至少多一个氟的氟化烃,并且任选地再生KF。 具有额外HF的nHF,或连续过程中,饲料中含有过量的HF。