Process for the production of guanidine nitrate from urea and ammonium
nitrate
    1.
    发明授权
    Process for the production of guanidine nitrate from urea and ammonium nitrate 失效
    用于从尿素和硝酸铵生产硝酸胍的方法

    公开(公告)号:US5041662A

    公开(公告)日:1991-08-20

    申请号:US488497

    申请日:1990-03-02

    CPC分类号: C07C277/00

    摘要: The present invention provides a process for the production of guanidine nitrate by the reaction of urea and excess ammonium nitrate in the presence of a silicon dioxide catalyst at an elevated temperature, wherein the molten reaction mixture containing the dispersed catalyst is passed in a cycle, a branch current of the reaction mixture is continuously separated off by filtration in such a manner that the catalyst remains in circulation and consumed urea and ammonium nitrate are supplemented corresponding to the removal of the product.

    摘要翻译: 本发明提供了一种通过在二氧化硅催化剂的存在下在升高的温度下通过尿素和过量硝酸铵的反应来生产硝酸胍的方法,其中含有分散的催化剂的熔融反应混合物在一个循环中通过, 反应混合物的分支电流通过过滤连续分离,使得催化剂保持循环并且消耗尿素和硝酸铵,同时除去产物。

    Process for obtaining guanidine hydrohalides from by-product mixtures
obtained in the production of mercaptoalkylsilanes
    3.
    发明授权
    Process for obtaining guanidine hydrohalides from by-product mixtures obtained in the production of mercaptoalkylsilanes 失效
    在生产巯基烷基硅烷中获得的副产物混合物中获得卤代氢胍的方法

    公开(公告)号:US4914235A

    公开(公告)日:1990-04-03

    申请号:US320154

    申请日:1989-03-07

    CPC分类号: C07C277/08

    摘要: The present invention provides a process for obtaining guanidine hydrohalides from the by-product mixture obtained in the production of mercaptoalkylsilanes and consisting essentially of guanidine hydrohalide, ammonium halide, thiourea and silane compounds, wherein the by-product mixture is extracted with an aliphatic ketone containing up to 7 carbon atoms and the extract is separated from the residue containing the guanidine hydrohalide.

    摘要翻译: 本发明提供了一种从巯基烷基硅烷生产中得到的副产物混合物获得胍氢卤化物的方法,其基本上由氢卤酸胍,卤化铵,硫脲和硅烷化合物组成,其中副产物混合物用含有 最多7个碳原子,并将提取物与含有氢卤酸胍的残余物分离。