Process for preparing ethylidene diacetate
    2.
    发明授权
    Process for preparing ethylidene diacetate 失效
    亚乙基二乙酸酯的制备方法

    公开(公告)号:US5138093A

    公开(公告)日:1992-08-11

    申请号:US654662

    申请日:1976-02-05

    IPC分类号: C07C45/49

    CPC分类号: C07C45/49 Y02P20/582

    摘要: Ethylidene diacetate is prepared by treating at least one member of the group consisting of methyl acetate and dimethyl ether with carbon monoxide in the presence of a source of halide under substantially anhydrous conditions.

    摘要翻译: 亚乙基二乙酸酯通过在基本无水条件下在卤化物源存在下用一氧化碳处理至少一种由乙酸甲酯和二甲醚组成的组分来制备。

    Process for preparing a silver catalyst
    3.
    发明授权
    Process for preparing a silver catalyst 失效
    制备银催化剂的方法

    公开(公告)号:US4342667A

    公开(公告)日:1982-08-03

    申请号:US023575

    申请日:1979-03-26

    摘要: A supported silver catalyst for oxidation of ethylene to ethylene oxide is prepared by impregnation of the support, activation, and solvent washing, with each step being carried out at a relatively low temperature. Silver so deposited has an average particle diameter of about 0.5-0.7 microns and is capable of being promoted by post-deposition of alkali metals such as cesium, rubidium, and potassium.

    摘要翻译: 通过浸渍载体,活化和溶剂洗涤来制备用于将乙烯氧化成环氧乙烷的负载型银催化剂,其中每个步骤在相对低的温度下进行。 如此沉积的银具有约0.5-0.7微米的平均粒径,并且能够通过后沉积诸如铯,铷和钾的碱金属来促进。

    Chemical process for producing isoprene by pyrolysis of allylic esters
    4.
    发明授权
    Chemical process for producing isoprene by pyrolysis of allylic esters 失效
    通过烯丙基酯热解生产异戊二烯的化学方法

    公开(公告)号:US4045419A

    公开(公告)日:1977-08-30

    申请号:US528103

    申请日:1974-11-29

    摘要: Process for preparing unsaturated esters by reacting an olefin having an allylic hydrogen atom with an ester forming material in the presence of oxygen and a catalyst selected from the group consisting of mercury, selenium or tellurium. The unsaturated ester may be converted to a polyunsaturated compound by pyrolysis.

    摘要翻译: 通过使具有烯丙基氢原子的烯烃与成酯材料在氧气和选自汞,硒或碲的催化剂存在下反应来制备不饱和酯的方法。 不饱和酯可以通过热解转化为多不饱和化合物。