Processes for geometric isomerization of halogenated olefins
    101.
    发明申请
    Processes for geometric isomerization of halogenated olefins 有权
    卤代烯烃几何异构化方法

    公开(公告)号:US20080103342A1

    公开(公告)日:2008-05-01

    申请号:US11588466

    申请日:2006-10-27

    IPC分类号: C07C17/00

    CPC分类号: C07C17/358 C07C21/18

    摘要: Disclosed are processes for the conversion of isomerizable halogenated C2-C6 olefins from one geometric form to a more preferred geometric form. Preferred process aspects involve converting C2-C6 olefin in a cis-form to a trans-form under conditions effective to convert at least about 50 percent, and even more preferably at least about 70 percent, of the cis-form compound to the trans-form compound. In preferred embodiments the C2-C6 olefin comprises tetrafluoropropene, with cis-1,3,3,3 tetrafluoropropene (cis-HFO-1234ze) being converted, preferably at high conversion rates and high selectivity, to trans-1,3,3,3 tetrafluoropropene (trans-HFO-1234ze). In preferred embodiments the conditions effective to achieve the desired high levels of conversion and selectivity include exposing the feed to a metal based catalyst selected from the group consisting of halogentated metal oxides, Lewis acid metal halides, zero-valent metals, and combinations of these, preferably under reaction conditions, including reaction temperature and residence time, effective to convert at least about 5% of the cis-form of the compound to other compounds and to further achieve a selectivity to the trans-form of the compound of at least about 70%.

    摘要翻译: 公开了将可异构化的卤代C 2 -C 6烯烃从一种几何形式转化为更优选的几何形式的方法。 优选的方法方面涉及在有效将至少约50%,甚至更优选至少约70%的顺式形式化合物转化成反式 - 形式的条件下,将顺式C2-C6烯烃转化为反式 - 形成化合物。 在优选的实施方案中,C2-C6烯烃包括四氟丙烯,顺式-1,3,3,3四氟丙烯(顺式-HFO-1234ze)优选以高转化率和高选择性转化成反式1,3,3,3-四氟丙烯, 3四氟丙烯(反式HFO-1234ze)。 在优选的实施方案中,有效实现期望的高水平转化率和选择性的条件包括将进料暴露于金属基催化剂中,所述催化剂选自卤化金属氧化物,路易斯酸金属卤化物,零价金属及其组合, 优选在反应条件下,包括反应温度和停留时间,有效地将至少约5%的顺式化合物转化为其它化合物,并进一步实现化合物的反式形式至少约70的选择性 %。

    Azeotrope-like compositions of 1,1,1,3,3-pentachloropropane and carbon tetrachloride
    103.
    发明授权
    Azeotrope-like compositions of 1,1,1,3,3-pentachloropropane and carbon tetrachloride 有权
    1,1,1,3,3-五氯丙烷和四氯化碳的共沸组合物

    公开(公告)号:US07265082B2

    公开(公告)日:2007-09-04

    申请号:US10911004

    申请日:2004-08-04

    IPC分类号: C11D7/50

    摘要: The invention relates to azeotropic and azeotrope-like mixtures of 1,1,1,3,3-pentachloropropane (HCC-240fa) and carbon tetrachloride and a process for separating the azeotrope-like mixtures. The compositions of the invention are useful as an intermediate in the production of HFC-245fa. The latter is useful as a nontoxic, zero ozone depleting fluorocarbon useful as a solvent, blowing agent, refrigerant, cleaning agent and aerosol propellant.

    摘要翻译: 本发明涉及1,1,1,3,3-五氯丙烷(HCC-240fa)和四氯化碳的共沸和类共沸混合物以及分离共沸混合物的方法。 本发明的组合物可用作HFC-245fa生产中的中间体。 后者可用作无毒,无臭氧消耗的碳氟化合物,可用作溶剂,发泡剂,制冷剂,清洁剂和气溶胶推进剂。

    Method of making hydrofluorocarbons
    104.
    发明授权
    Method of making hydrofluorocarbons 有权
    制备氢氟烃的方法

    公开(公告)号:US07214839B2

    公开(公告)日:2007-05-08

    申请号:US10444610

    申请日:2003-05-23

    IPC分类号: C07C17/00

    摘要: A manufacturing process for making hydrofluorocarbons (HFCs), by reacting a hydrochlorocarbon and HF in a liquid phase catalytic reactor using a large mole ratio of HF to hydrochlorocarbon to minimize formation of high boiling by-products and improve HF consumption and hydrofluorocarbon yields.

    摘要翻译: 通过使用大量摩尔比的HF与氢氯化碳在液相催化反应器中使氢氟烃和HF反应制备氢氟烃(HFCs)的制造方法,以最小化高沸点副产物的形成并改善HF消耗量和氢氟碳化合物产率。

    Method of making 1,1,3,3,3-pentafluoropropene
    105.
    发明授权
    Method of making 1,1,3,3,3-pentafluoropropene 有权
    制备1,1,3,3,3-五氟丙烯的方法

    公开(公告)号:US07091388B2

    公开(公告)日:2006-08-15

    申请号:US10671810

    申请日:2003-09-26

    IPC分类号: C07C17/00 C07C19/08

    摘要: The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc can also be made from the dehydrofluorination of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa). HFC-1225zc) is a compound that has the potential to be used as a low Global Warming Potential refrigerant, blowing agent, aerosol propellant, or solvent.

    摘要翻译: 本发明提供了制造氢氟烃1,1,3,3,3-五氟丙烯(HFC-1225zc)的经济方法。 HFC-1225zc可以由1-氯-1,1,3,3,3-五氟丙烷(HCFC-235fa)的脱氯化氢制成。 或者,HFC-1225zc也可以由1,1,1,3,3,3-六氟丙烷(HFC-236fa)的脱氟化氢制成。 HFC-1225zc)是具有潜在用作低全球变暖潜能的制冷剂,发泡剂,气溶胶推进剂或溶剂的化合物。