Process for the preparation of halogenated
2,2-bis(trifluoromethyl)-1,3-dioxolanes
    102.
    发明授权
    Process for the preparation of halogenated 2,2-bis(trifluoromethyl)-1,3-dioxolanes 失效
    卤代2,2-双(三氟甲基)-1,3-二氧戊环的制备方法

    公开(公告)号:US5286824A

    公开(公告)日:1994-02-15

    申请号:US961985

    申请日:1992-10-16

    IPC分类号: C07D317/42 C08F16/24

    CPC分类号: C07D317/42

    摘要: A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1, 3-dioxolane of the formula ##STR1## wherein R.sub.f is perhaloalkyl comprising a 2,2-bis(trihaloalkyl)-1,3-dioxolane in the presence of at least one of La, Ni, Sn, Zn Fe, Co or Cu is disclosed.A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1,3-dioxolane of the formula ##STR2## wherein X is Cl and each Y is independently Cl or F and wherein at least one Y is F, comprising fluorinating a halogenated 2,2-bis(trifluoromethyl)-4,4,5,5-tetrachloro-1,3-dioxolane in the presence of a catalyst which is preferably Cr.sub.2 O.sub.3 is disclosed.A process for the production of a 2,2-bis(trihaloalkyl)-1,3-dioxole of the formula ##STR3## comprising dehalogenating substantially only a corresponding trans-2,2-bis(perhaloalkyl)-4,5-difluoro-4, 5-dichloro-1,3-dioxolane is disclosed.

    摘要翻译: 制备下式的卤化2,2-二(三卤代烷基)-1,3-二氧戊环的方法,其中Rf是包含2,2-二(三卤代烷基)-1,3-二氧戊环的全卤代烷基,其中 公开了La,Ni,Sn,ZnFe,Co或Cu中的至少一种的存在。 一种制备式IMA的卤代2,2-双(三卤代烷基)-1,3-二氧戊环的方法,其中X是Cl并且每个Y独立地是Cl或F,并且其中至少一个Y是F,包括 公开了在优选为Cr 2 O 3的催化剂存在下氟化卤代2,2-双(三氟甲基)-4,4,5,5-四氯-1,3-二氧戊环。 一种制备式“IMAGE”的2,2-双(三卤代烷基)-1,3-二氧杂环戊烯的方法,包括基本上仅脱除相应的反式2,2-双(全卤代烷基)-4,5-二氟 - 公开了4,5-二氯-1,3-二氧戊环。

    Processes using aluminum fluoride catalyst compositions for preparing
1,1-dichloro-1,2,2,2-tetrafluoroethane
    103.
    发明授权
    Processes using aluminum fluoride catalyst compositions for preparing 1,1-dichloro-1,2,2,2-tetrafluoroethane 失效
    使用氟化铝催化剂组合物制备1,1-二氯-1,2,2,2-四氟乙烷的方法

    公开(公告)号:US5243106A

    公开(公告)日:1993-09-07

    申请号:US865784

    申请日:1992-04-07

    摘要: A process is disclosed for transforming a saturated reactant (e.g. 1,1,2-trichloro-1,2,2-trifluoroethane) into a saturated product (e.g. 1,1-dichloro-1,2,2,2-tetrafluoroethane) by contacting a gaseous mixture comprising said reactant with an aluminum fluoride catalyst at an elevated temperature, which is characterized using a catalyst composition consisting essentially of an aluminum fluoride prepared by the reaction of aluminum hydroxide and HF. Also disclosed is a process for producing 2-chloro-1,1,1,2-tetrafluoroethane and/or 1,1,1,2-tetrafluoroethane by hydrodechlorinating 1,1-dichloro-1,2,2,2-tetrafluoroethane produced by said transformation.

    摘要翻译: 公开了将饱和反应物(例如1,1,2-三氯-1,2,2-三氟乙烷)转化成饱和产物(例如1,1-二氯-1,2,2,2-四氟乙烷)的方法,通过 在升高的温度下将包含所述反应物的气态混合物与氟化铝催化剂接触,其特征在于使用主要由通过氢氧化铝和HF的反应制备的氟化铝组成的催化剂组合物。 还公开了通过加氢脱氯1,1-二氯-1,2,2,2-四氟乙烷生产2-氯-1,1,1,2-四氟乙烷和/或1,1,1,2-四氟乙烷的方法 通过转型。

    Gas-phase fluorination
    104.
    发明授权
    Gas-phase fluorination 失效
    气相氟化

    公开(公告)号:US5051537A

    公开(公告)日:1991-09-24

    申请号:US519328

    申请日:1990-05-04

    申请人: Leo E. Manzer

    发明人: Leo E. Manzer

    IPC分类号: C07C17/20

    CPC分类号: C07C17/206

    摘要: An improved process is disclosed for the manufacture of 1,1,1,2-tetrafluoroethane, more particularly, a gas-phase reaction of 1,1,1-trifluorochloroethane with hydrogen fluoride in the presence of a catalyst, a selected metal on aluminum fluoride, and molecular oxygen which process minimizes the oxidation of liberated hydrogen chloride to chlorine and water, extends catalyst life and improves yield.

    摘要翻译: 公开了用于制备1,1,1,2-四氟乙烷的改进方法,更具体地说,在催化剂存在下,1,1,1-三氟氯乙烷与氟化氢的气相反应,选择的铝上金属 氟化物和分子氧,其将释放的氯化氢的氧化最小化为氯和水,延长催化剂寿命并提高产率。

    Gas-phase fluorination process
    105.
    发明授权
    Gas-phase fluorination process 失效
    气相氟化工艺

    公开(公告)号:US5008475A

    公开(公告)日:1991-04-16

    申请号:US465402

    申请日:1990-01-16

    IPC分类号: C07C17/087 C07C17/21

    CPC分类号: C07C17/087 C07C17/21

    摘要: An improved gas-phase process for the manufacture of 1,1,1-trifluorodichloroethane and/or 1,1,1,2-tetrafluorochloroethane by contacting a suitable tetrahaloethylene with hydrogen fluoride in the presence of a selected metal in combination with a high fluorine content aluminum-containing compound, the reaction being conducted under controlled conditions whereby the production of pentafluoroethane is minimized.

    摘要翻译: 在选择的金属与高氟化合物的存在下,通过使合适的四卤乙烯与氟化氢接触来制备1,1,1-三氟二氯乙烷和/或1,1,1,2-四氟氯乙烷的改进的气相方法 含量的含铝化合物,反应在控制条件下进行,五氟乙烷的生产最小化。

    Gas-phase fluorination process
    107.
    发明授权
    Gas-phase fluorination process 失效
    气相氟化工艺

    公开(公告)号:US4766259A

    公开(公告)日:1988-08-23

    申请号:US85027

    申请日:1987-08-13

    CPC分类号: C07C17/087 C07C17/21

    摘要: An improved gas-phase process for the manufacture of 1,1-difluoro-1,2-dichloroethane and 1-fluoro-1,1,2-trichloroethane by contacting a suitable trihaloethylene and/or a tetrahaloethane with hydrogen fluoride in the presence of a metal in combination with a high fluorine content alumina, the reaction being preferably conducted under controlled conditions whereby the production of 1,1,1-trifluorochloroethane is minimized.

    摘要翻译: 通过在合适的三卤代乙烯和/或四卤乙烷与氟化氢的存在下接触,制备1,1-二氟-1,2-二氯乙烷和1-氟-1,1,2-三氯乙烷的改进的气相方法 与高氟含量的氧化铝组合的金属,该反应优选在控制条件下进行,由此使1,1,1-三氟氯乙烷的生成最小化。