Process for the manufacture of halogenated propanes containing
end-carbon fluorine
    4.
    发明授权
    Process for the manufacture of halogenated propanes containing end-carbon fluorine 有权
    制造含有末端碳氟的卤代丙烷的方法

    公开(公告)号:US6066769A

    公开(公告)日:2000-05-23

    申请号:US155841

    申请日:1998-10-06

    摘要: A process is disclosed for producing a compound of the formula: CF.sub.3 CHXCF.sub.3-z Y.sub.2 where X and Y are independently selected from the group consisting of H and Cl, and z is 0 or 1. The process involves (1) contacting CCl.sub.3 CHXCC.sub.3-z Y.sub.z,CCl.sub.2-z .dbd.CXCC.sub.3, and/or CCl.sub.2 CX.dbd.CC.sub.3-z Y.sub.z starting material, with hydrogen fluoride at a temperature of less than 200.degree. C. to produce a fluorination product of said starting material which includes at least 90 mole percent total of C.sub.3 HXY.sub.z Cl.sub.6-z-x F.sub.x saturated compounds and C.sub.3 XY.sub.z Cl.sub.5-z-y F.sub.y olefinic compounds, wherein x is an integer from 1 to 6-z and y is an integer from 1 to 5-z, (the fluorination product including no more than about 40 mole percent of the desired product, CF.sub.3 CHXCF.sub.3-z Y.sub.z); (2) contacting saturated compounds and olefinic compounds produced in (1) with hydrogen fluoride in the vapor phase at a temperature of from 200.degree. C. to about 400.degree. C. in the presence of a fluorination catalyst; and (3) reacting a sufficient amount of said compounds, wherein x is an integer from 1 to 5-z and olefinic compounds produced in (1) with hydrogen fluoride in the vapor phase at a temperature of from 200.degree. C. to about 400.degree. C. in the presence of a vapor phase fluorination catalyst to provide an overall selectivity to CF.sub.3 CHXCF.sub.3-z Y.sub.z of at least about 90 percent based upon the amount of starting material reacted with HF in (1) and (2).

    摘要翻译: PCT No.PCT / US97 / 06013 371 1998年10月6日第 102(e)日期1998年10月6日PCT 1997年4月4日PCT PCT。 WO97 / 37956 PCT公开号 日期1997年10月16日公开了制备下式化合物的方法:CF 3 CHXCF 3 -ZY 2其中X和Y独立地选自H和Cl,z是0或1.该方法包括(1) CCl 3 CHXCC 3 -ZYz,CCl 2 -Z = CXCC 3和/或CCl 2 C X = CCl 3 -ZYz起始原料,在低于200℃的温度下加入氟化氢,以产生所述原料的氟化产物,其包含至少90摩尔% 总共C3HXYzCl6-z-xFx饱和化合物和C3XYzCl5-z-yFy烯属化合物,其中x是1至6-z的整数,y是1至5-z的整数(氟化产物不超过约 40摩尔%的所需产物,CF 3 CHXCF 3 -ZYz); (2)在氟化催化剂存在下,将温度为200℃至约400℃的气相中的(1)中产生的饱和化合物和烯烃化合物与氟化氢接触; 和(3)将足量的所述化合物(其中x是1至5-z的整数)和(1)中制备的烯烃化合物与气相中的氟化氢在200℃至约400℃的温度下反应 在气相氟化催化剂的存在下,基于在(1)和(2)中与HF反应的原料的量,提供至少约90%的CF 3 CHXCF 3 -ZYz的总体选择性。