Process for the production of aminoguanidine bicarbonate
    4.
    发明授权
    Process for the production of aminoguanidine bicarbonate 失效
    生产氨基胍碳酸氢盐的方法

    公开(公告)号:US4906778A

    公开(公告)日:1990-03-06

    申请号:US237993

    申请日:1988-08-29

    IPC分类号: C07C277/08 C07C281/16

    CPC分类号: C07C281/16 C07C277/08

    摘要: A process for the preparation of aminoguanidine bicarbonate includes reacting an acidic aqueous hydrazine hydrate solution with calcium cyanamide in an elevated temperature to produce an aminoguanidine solution, recovering the solution, and reacting therewith an alkali metal bicarbonate to produce relatively high purity aminoguanidine bicarbonate.

    摘要翻译: 用于制备氨基胍碳酸氢盐的方法包括在升高的温度下使酸性水合肼水溶液与氨基氰胺反应,生成氨基胍溶液,回收该溶液,并与碱金属碳酸氢盐反应以产生相对高纯度的氨基胍碳酸氢盐。

    "> Use of a catalyst to inhibit formation of tar during the
    7.
    发明授权
    Use of a catalyst to inhibit formation of tar during the "ENE" reaction of an ethylenically unsaturated alpha, beta dicarboxylic acid compound and an ethylenically unsaturated hydrocarbon 失效
    在烯属不饱和α,β二羧酸化合物和烯属不饱和烃的“ENE”反应期间使用催化剂抑制焦油的形成

    公开(公告)号:US4396774A

    公开(公告)日:1983-08-02

    申请号:US360372

    申请日:1982-03-22

    IPC分类号: C07C51/567 C07D307/60

    CPC分类号: C07C51/567

    摘要: A process for the production of a substituted alpha, beta dicarboxylic acid compound substantially free of tar and other resinous reaction byproducts comprising the reaction of an ethylenically unsaturated long chain compound having at least 10 carbon atoms and an ethylenically unsaturated alpha, beta dicarboxylic acid compound at conditions favoring the ENE reaction in the presence of a catalytically effective amount of an alkyl aluminum halide.

    摘要翻译: 制备基本上不含焦油和其它树脂反应副产物的取代的α,β二羧酸化合物的方法,其包括具有至少10个碳原子的烯键式不饱和长链化合物和烯属不饱和的α,β二羧酸化合物在 在催化有效量的烷基铝卤化物存在下有利于ENE反应的条件。