Method of purifying hexafluoroacetone hydrate
    1.
    发明授权
    Method of purifying hexafluoroacetone hydrate 失效
    六氟丙酮水合物的净化方法

    公开(公告)号:US4544772A

    公开(公告)日:1985-10-01

    申请号:US604536

    申请日:1984-04-27

    CPC分类号: C07C31/42 C07C31/40

    摘要: Crude hexafluoroacetone (HFA) hydrate containing chlorofluoroacetone(s) hydrate(s) as impurity is purified by adding an alkali metal hydroxide and maintaining at an elevated temperature, preferably at 100.degree.-110.degree. C., to thereby cause decomposition reaction of every chlorofluoroacetone hydrate with the alkali metal hydroxide, followed by neutralization of an excess portion of the alkali metal hydroxide. Alkali metal hydroxides, which readily react with anhydrous HFA, react preferentially with chlorofluoroacetone hydrates but hardly react with coexisting HFA hydrate.

    摘要翻译: 含有氯氟丙酮(水合物)杂质的粗六水丙酮(HFA)水合物通过加入碱金属氢氧化物并保持在升高的温度,优选在100-110℃下纯化,从而引起每个氯氟丙酮的分解反应 与碱金属氢氧化物水合,然后中和过量的碱金属氢氧化物。 容易与无水HFA反应的碱金属氢氧化物优先与氯氟丙酮水合物反应,但几乎不与共存的HFA水合物反应。