Process for removing palladium from polyketones
    2.
    发明授权
    Process for removing palladium from polyketones 失效
    从聚酮中除去钯的方法

    公开(公告)号:US5362850A

    公开(公告)日:1994-11-08

    申请号:US119204

    申请日:1993-09-22

    IPC分类号: C08G67/00 C08G67/02

    CPC分类号: C08G67/02

    摘要: A process is disclosed for removing palladium from a contaminated polyketone containing palladium which comprises contacting the contaminated polyketone with an olefin in the substantial absence of carbon monoxide at a temperature above the temperature at which the polyketone was formed and in a solvent in which the contaminated polyketone is insoluble. The process is preferably carried out in the presence of an acid. The temperature at which the process is carried out is preferably at least 20.degree. C. greater than the polymerization temperature.

    摘要翻译: PCT No.PCT / GB93 / 00366 Sec。 371日期:1993年9月22日 102(e)1993年9月22日PCT 1993年2月22日PCT公布。 公开号WO93 / 17061 日本公报1993年9月2日公开了一种从含有污染的含钯的钯中除去钯的方法,其中包括在高于形成聚酮的温度的温度下,将污染的聚酮与基本上不存在一氧化碳的烯烃接触, 其中污染的聚酮不溶解的溶剂。 该方法优选在酸存在下进行。 进行该方法的温度优选比聚合温度高至少20℃。

    Process for the production of acetic acid
    4.
    发明授权
    Process for the production of acetic acid 失效
    乙酸生产工艺

    公开(公告)号:US5416237A

    公开(公告)日:1995-05-16

    申请号:US276873

    申请日:1994-07-18

    CPC分类号: C07C51/12 C07C51/44

    摘要: In a process for the production of acetic acid by carbonylation of methanol in the presence of a rhodium carbonylation catalyst, methyl iodide and an iodide salt stabiliser the improvement resides in maintaining a finite concentration of water of up to about 10% by weight and a methyl acetate concentration of at least 2% by weight in the liquid reaction composition and recovering the acetic acid product by passing the liquid reaction composition through a flash zone to produce a vapour fraction which is passed to a single distillation column from which an acetic acid product is removed.

    摘要翻译: 在甲酸铑羰化反应催化剂存在下通过羰基化生产乙酸的方法中,甲基碘和碘化物盐稳定剂的改进在于维持高达约10重量%的有限浓度的水和甲基 乙酸盐浓度在液体反应组合物中至少为2重量%,并通过使液体反应组合物通过闪蒸区域回收乙酸产物,以产生蒸气馏分,该蒸气馏分通过乙酸产物为单一蒸馏塔 删除。