Aluminum fluoride catalyst compositions and use thereof in a
chlorofluorination process for preparing
1,1-dichloro-1,2,2,2-tetrafluoroethane
    36.
    发明授权
    Aluminum fluoride catalyst compositions and use thereof in a chlorofluorination process for preparing 1,1-dichloro-1,2,2,2-tetrafluoroethane 失效
    氟化铝催化剂组合物及其在制备1,1-二氯-1,2,2,2-四氟乙烷氯氟化方法中的用途

    公开(公告)号:US5243108A

    公开(公告)日:1993-09-07

    申请号:US865807

    申请日:1992-04-07

    摘要: A catalyst composition is disclosed which consists essentially of an aluminum fluoride prepared by the reaction of aluminum hydroxide and HF. Also disclosed is a process for preparing 1,1,-dichloro-1,2,2,2-tetrafluoroethane by chlorofluorination which comprises the step of contacting a gaseous mixture comprising at least one tetrahaloethylene having the formula C.sub.2 Cl.sub.4-x F.sub.x wherein x is an integer from zero to 3 and both Cl.sub.2 and HF with said catalyst composition at an elevated temperature; and 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 prepared by said chlorofluorination.

    摘要翻译: 公开了一种催化剂组合物,其基本上由通过氢氧化铝和HF的反应制备的氟化铝组成。 还公开了通过氯氟化制备1,1,1-二氯-1,2,2,2-四氟乙烷的方法,其包括使包含至少一种具有式C 2 Cl 4-x F x的四卤代乙烯的气体混合物接触的步骤,其中x是整数 从0到3,Cl 2和HF与所述催化剂组合物在升高的温度下反应; 以及通过加氢脱氯1,1-二氯-1,2,2,2-四氟乙烷制备2-氯-1,1,1,2-四氟乙烷和/或1,1,1,2-四氟乙烷的方法,所述方法由所述 氯氟化。

    Manufacture of 1,1,1,2-tetrafluoroethane
    37.
    发明授权
    Manufacture of 1,1,1,2-tetrafluoroethane 失效
    1,1,1,2-四氟乙烷的制造

    公开(公告)号:US5185482A

    公开(公告)日:1993-02-09

    申请号:US824712

    申请日:1992-01-17

    申请人: Leo E. Manzer

    发明人: Leo E. Manzer

    IPC分类号: C07C17/20 C07C17/21

    CPC分类号: C07C17/21 C07C17/206

    摘要: This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethane and, optionally, other organic by-products. The improvement resides in conducting the reaction in a single reaction zone while recovering the 1,1,1,2-tetrafluoroethane from the mixture and recycling the 2-chloro-1,1,1-trifluoroethane and, optionally, other organic by-products from the mixture to the reaction along with trichloroethylene and HF.

    摘要翻译: 本发明提供了在催化剂存在下通过HF和三氯乙烯的反应制备1,1,1,2-四氟乙烷的改进方法,以形成包含2-氯-1,1,1-三氟乙烷和1 ,1,1,2-四氟乙烷和任选的其它有机副产物。 改进在于在单个反应区中进行反应,同时从混合物中回收1,1,1,2-四氟乙烷并循环使用2-氯-1,1,1-三氟乙烷和任选的其它有机副产物 从混合物到三氯乙烯和HF的反应。

    Process for the preparation of halogenated
2,2-bis(trifluoromethyl)-1,3-dioxolanes
    38.
    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:US5177224A

    公开(公告)日:1993-01-05

    申请号:US759095

    申请日:1991-09-06

    IPC分类号: C07D317/42

    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-双(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,Zn,Fe,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。