Azeotrope-like compositions of 1-chloro-1,3,3,3-tetrafluoropropane and 1,2-dichloro-3,3,3-trifluoropropene
    3.
    发明授权
    Azeotrope-like compositions of 1-chloro-1,3,3,3-tetrafluoropropane and 1,2-dichloro-3,3,3-trifluoropropene 有权
    1-氯-1,3,3,3-四氟丙烷和1,2-二氯-3,3,3-三氟丙烯的类共沸组合物

    公开(公告)号:US06759381B1

    公开(公告)日:2004-07-06

    申请号:US10430078

    申请日:2003-05-06

    IPC分类号: C11D730

    摘要: Provided are azeotropic and azeotrope-like mixtures of 1-chloro-1,3,3,3-tetrafluoropropane and 1,2-dichloro-3,3,3-trifluoropropene that are useful as an intermediate in the production of HFC-245fa. HFC-245fa is useful as a nontoxic, zero ozone depleting fluorocarbon useful as solvents, blowing agents, refrigerants, cleaning agents, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing compositions and power cycle working fluids.

    摘要翻译: 提供了可用作HFC-245fa生产中间体的1-氯-1,3,3,3-四氟丙烷和1,2-二氯-3,3,3-三氟丙烯的共沸和类共沸混合物。 HFC-245fa可用作无毒,无臭氧消耗的氟烃,可用作溶剂,发泡剂,制冷剂,清洁剂,气溶胶推进剂,传热介质,气体电介质,灭火组合物和动力循环工作流体。

    Process for the manufacture of 1,3,3,3-tetrafluoropropene
    4.
    发明授权
    Process for the manufacture of 1,3,3,3-tetrafluoropropene 有权
    制备1,3,3,3-四氟丙烯的方法

    公开(公告)号:US07829748B1

    公开(公告)日:2010-11-09

    申请号:US12563458

    申请日:2009-09-21

    IPC分类号: C07C17/00

    摘要: The invention provides an economic process for the manufacture of 1,3,3,3-tetrafluoropropene (HFO-1234ze) by a two stage process. A vapor phase hydrofluorination of 1-chloro-3,3,3-trifluoropropene (HCFC-1233zd) into 1-chloro-1,3,3,3-tetrafluoropropane (HCFC-244fa) and/or 1,1,1,3,3-pentafluoropropane (HFC-245fa) is conducted, followed by the thermal dehydrochlorination of HCFC-244fa and dehydro fluorination of HFC-245fa into HFO-1234ze in the presence of a catalyst which comprises one or more of alkali metal halides, alkaline earth metal halides, halogenated metal oxides, zero oxidation state metals, zinc halides, palladium halides, and activated carbon.

    摘要翻译: 本发明提供了通过两阶段方法制备1,3,3,3-四氟丙烯(HFO-1234ze)的经济方法。 将1-氯-3,3,3-三氟丙烯(HCFC-1233zd)汽相氢氟化为1-氯-1,3,3,3-四氟丙烷(HCFC-244fa)和/或1,1,1,3 进行3-五氟丙烷(HFC-245fa),随后在含有一种或多种碱金属卤化物,碱土金属的催化剂存在下,将HCFC-244fa的热脱氯化氢和HFC-245fa的脱氟化氢分解成HFO-1234 卤化金属氧化物,零氧化态金属,卤化锌,钯卤化物和活性炭。