Recovery of hexafluoroacetone from a hexafluoroacetone-HF control
    82.
    发明授权
    Recovery of hexafluoroacetone from a hexafluoroacetone-HF control 失效
    从六氟丙酮-HF对照回收六氟丙酮

    公开(公告)号:US4059633A

    公开(公告)日:1977-11-22

    申请号:US605124

    申请日:1975-08-15

    CPC classification number: C07C45/82 C07C45/85

    Abstract: A process for recovery of hexafluoroacetone from the hexafluoroacetone-HF complex by contacting the complex with acetic anhydride under reaction conditions. The reaction produces liberated hexafluoroacetone and by-products, acetyl fluoride and acetic acid. The by-products can be further reacted in a cyclic process whereby acetic anhydride is regenerated for recycle.

    Abstract translation: 通过在反应条件下使络合物与乙酸酐接触,从六氟丙酮-HF络合物中回收六氟丙酮的方法。 该反应产生释放的六氟丙酮和副产物,乙酰氟和乙酸。 副产物可以在循环过程中进一步反应,由此再生乙酸酐用于再循环。

    Distillation of aromatic ketone from aromatic alcohol with acid
    84.
    发明授权
    Distillation of aromatic ketone from aromatic alcohol with acid 失效
    从酸性芳香醇中挥发芳香酮

    公开(公告)号:US3819492A

    公开(公告)日:1974-06-25

    申请号:US19676871

    申请日:1971-11-08

    CPC classification number: C07C45/82 B01D3/34 C07C49/78

    Abstract: A process for purifying aromatic ketones from admixture with difficultly separable aromatic acid and alcohol derivatives of said ketone by distillation in the presence of a catalytic amount of a mineral acid.

    Abstract translation: 通过蒸馏在催化量的无机酸的存在下与所述酮的难以分离的芳族酸和醇衍生物混合来提纯芳族酮的方法。

    Recovery of primary amines
    85.
    发明授权
    Recovery of primary amines 失效
    恢复主要的氨基酸

    公开(公告)号:US3594421A

    公开(公告)日:1971-07-20

    申请号:US3594421D

    申请日:1968-10-31

    CPC classification number: C07C45/82

    Abstract: PRIMARY AMINES ARE RECOVERED FROM THE PRODUCTS OF REDUCTIVE AMINATION OF ALCOHOLS BY CONVERTING THE UNREACTED ALCOHOLS TO ALKYL BORATES AND DISTILLING THE AMINES. PRIMARY AMINES HAVE MANY USES IN COMMERCE, FOR EXAMPLE, THEY ARE USEFUL AS CORROSION INHIBITORS, ORE FLOTATION AGENTS, GERMICIDES, RUBBER MOLD RELEASE AGENTS, PIGMENT COATING AGENTS AND CHEMICAL INTERMEDIATES.

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