Process for the preparation of muscone
    7.
    发明授权
    Process for the preparation of muscone 失效
    肌肉制备工艺

    公开(公告)号:US4335262A

    公开(公告)日:1982-06-15

    申请号:US183722

    申请日:1980-09-03

    CPC classification number: C11B9/0038 C07C45/57 C07D303/32

    Abstract: Process for the preparation of muscone starting from pyranic derivatives by treatments thereof with hydrogen in an inert organic solvent and in the presence of a noble metal catalyst.Compound of formula ##STR1## and process for its preparation via dehydrogenation and dehydration of corresponding diol.Process for the preparation of unsaturated macrocyclic ketones of formula ##STR2## wherein the dotted lines stand for a single or a double bond wherein x=1 and y=2, orx=2 and y=1,starting from compound (Ia) via acidic treatment.

    Abstract translation: 通过在惰性有机溶剂中和在贵金属催化剂存在下用氢处理由吡喃衍生物制备肌醇的方法。 式(Ia)的化合物及其通过相应的二醇的脱氢和脱水而制备的方法。 用于制备式(IMA)的不饱和大环酮的方法,其中虚线代表单或双键,其中x = 1和y = 2,或x = 2和y = 1,从化合物(Ia)经由 酸性处理。

    Method for increasing the effectiveness of a magnetic field for
magnetizing cobalt-rare earth alloy
    8.
    发明授权
    Method for increasing the effectiveness of a magnetic field for magnetizing cobalt-rare earth alloy 失效
    提高磁化钴 - 稀土合金磁场有效性的方法

    公开(公告)号:US4156623A

    公开(公告)日:1979-05-29

    申请号:US668585

    申请日:1976-03-19

    Inventor: Joseph J. Becker

    CPC classification number: H01F1/0557

    Abstract: A cobalt-rare earth alloy sintered product is substantially magnetized by heating or cooling it to a temperature at which its intrinsic coercive force H.sub.ci is significantly lower than at room temperature, applying a relatively small magnetizing field to it at such temperature and cooling or warming it in the magnetizing field to room temperature.

    Abstract translation: 钴 - 稀土合金烧结产品通过加热或冷却至其本征矫顽力Hci明显低于室温的温度基本上被磁化,在此温度下对其施加相当小的磁化场并冷却或升温 在磁场中达到室温。

Patent Agency Ranking