Process for producing alkylthio- and arylthio-substituted carboxylic acids and their thioesters
    12.
    发明公开
    Process for producing alkylthio- and arylthio-substituted carboxylic acids and their thioesters 失效
    一种制备烷硫基和芳硫基 - 取代的羧酸和它们的酯的方法。

    公开(公告)号:EP0446661A1

    公开(公告)日:1991-09-18

    申请号:EP91102339.8

    申请日:1991-02-19

    CPC classification number: C07C319/14

    Abstract: A process is provided for producing alkylthio-substituted carboxylic acids and arylthio-substituted carboxylic acids and their corresponding alkylthio-substituted thioesters and arylthio-substituted thioesters. The process comprises reacting a mercaptan with a lactone in the presence of an acidic catalyst at temperatures of about 100°C to about 350°C. The process for preparing the thio-substituted carboxylic acids and thio-substituted thioesters may be a continuous process or a batch process.

    Abstract translation: 提供了一种生产烷硫基substituiertem羧酸和羧酸芳硫基 - substituiertem和它们相应的烷硫基 - substituiertem硫酯和芳硫基 - substituiertem硫酯的方法。 该方法包括在约100℃的温度起反应在酸性催化剂的存在下,内酯硫醇至约350℃的方法,用于制备硫代羧酸和substituiertem硫代substituiertem硫酯可以是一个连续的过程或 批处理。

    Process for removing sulfur from organic sulfides
    14.
    发明公开
    Process for removing sulfur from organic sulfides 失效
    Verfahren zur Entfernung von Schwefel aus organischen Sulfiden。

    公开(公告)号:EP0399185A1

    公开(公告)日:1990-11-28

    申请号:EP90106410.5

    申请日:1990-04-04

    CPC classification number: C07C319/22 C07C321/14

    Abstract: A process for removing sulfur from an organic sulfide containing three or more chemically bound sulfur atoms is disclosed wherein said sulfide is contacted with a defined catalyst at elevated temperature to increase the disproportionation rate and the corresponding sulfide of lower sulfur rank is continuously removed from the reaction zone.

    Abstract translation: 公开了一种从含有三个或更多化学结合的硫原子的有机硫化物中除去硫的方法,其中所述硫化物在高温下与规定的催化剂接触以增加歧化速率,并且从反应中连续除去相应的较低硫等级的硫化物 区。

    Sulfur dissolving composition
    15.
    发明公开
    Sulfur dissolving composition 失效
    SchwefellösendeMischung。

    公开(公告)号:EP0289951A2

    公开(公告)日:1988-11-09

    申请号:EP88106906.6

    申请日:1988-04-29

    CPC classification number: C09K8/532 C01B17/02 C07C321/00 C07C323/00

    Abstract: A composition, useful for dissolving sulfur, comprising a disulfide, polysulfide and mixtures thereof containing a catalytic amount of a mixture of a basic nitrogen-containing compound and an alcoholic or aqueous solution of an alkali hydroxide, alkoxide, or carbonate and methods for using the composition to prevent sulfur-plugging in a system, are disclosed.

    Abstract translation: 用于溶解硫的组合物,其包含二硫化物,多硫化物及其混合物,其含有催化量的碱性含氮化合物和碱金属氢氧化物,醇盐或碳酸盐的醇或水溶液的混合物,以及使用 公开了防止系统中的硫塞的组合物。

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