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    Production of tertiary amine oxides
    3.
    发明授权
    Production of tertiary amine oxides 失效
    生产叔胺氧化物

    公开(公告)号：US6080889A

    公开(公告)日：2000-06-27

    申请号：US53444

    申请日：1998-04-01

    申请人： Rebecca S. Cochran ,  Andrea P. Wight ,  Douglas H. Krzystowczyk ,  Dustin H. Thomas

    发明人： Rebecca S. Cochran ,  Andrea P. Wight ,  Douglas H. Krzystowczyk ,  Dustin H. Thomas

    IPC分类号： C07C291/04 ,  C07C291/00

    CPC分类号： C07C291/04

    摘要： Exothermic oxidation of tertiary amine with aqueous hydrogen peroxide in an aqueous reaction medium formed or being formed from tertiary amine, aqueous hydrogen peroxide, carbon dioxide, and optionally chelating agent and/or additional water, is initiated at about 15 to about 25.degree. C., and while agitating the reaction mixture, the temperature is allowed to rise adiabatically to a temperature in the range of about 50 to about 100.degree. C. In this way, it is possible to produce tertiary amine oxides with very low levels, if any, of nitrosamine impurity, without addition of metal and/or phosphorus-containing components recommended in the prior art. Even though a substantial portion of the reaction is performed at temperatures in the range of about 50-100.degree. C., nitrosamine content, if any, in the resultant tertiary amine oxide product can be well below 30 ppb. Use of such relatively exothermically achieved high temperatures in turn results in faster reaction rates and enables use of shorter reaction periods.

    摘要翻译： 在叔胺，过氧化氢水溶液，二氧化碳和任选的螯合剂和/或另外的水中形成或形成的水性反应介质中的叔胺与过氧化氢水溶液的放热氧化在约15至约25℃下开始 并且在搅拌反应混合物的同时，将温度绝热升温至约50至约100℃的温度。以这种方式，可以生产具有非常低水平（如果有的话）的叔胺氧化物， 的亚硝胺杂质，而不添加现有技术中推荐的金属和/或含磷成分。 即使大部分反应在约50-100℃的温度下进行，所得叔胺氧化物产物中的亚硝胺含量（如果有的话）也可以低于30ppb。 这种相对放热实现的高温的使用反过来导致更快的反应速率并且能够使用更短的反应时间。

    Production of tertiary amine oxides
    4.
    发明授权
    Production of tertiary amine oxides 失效
    生产叔胺氧化物

    公开(公告)号：US6166255A

    公开(公告)日：2000-12-26

    申请号：US150820

    申请日：1998-09-11

    申请人： Rebecca S. Cochran ,  Andrea P. Wight ,  Douglas H. Krzystowczyk ,  Dustin H. Thomas

    发明人： Rebecca S. Cochran ,  Andrea P. Wight ,  Douglas H. Krzystowczyk ,  Dustin H. Thomas

    IPC分类号： C07C291/04 ,  C07C209/68

    CPC分类号： C07C291/04

    摘要： Exothermic oxidation of tertiary amine with aqueous hydrogen peroxide in an aqueous reaction medium formed or being formed from tertiary amine, aqueous hydrogen peroxide, carbon dioxide, and optionally chelating agent and/or additional water, is initiated at about 15 to about 25.degree. C., and while agitating the reaction mixture, the temperature is allowed to rise adiabatically to a temperature in the range of about 50 to about 100.degree. C. In this way, it is possible to produce tertiary amine oxides with very low levels, if any, of nitrosamine impurity, without addition of metal and/or phosphorus-containing components recommended in the prior art. Even though a substantial portion of the reaction is performed at temperatures in the range of about 50-100.degree. C., nitrosamine content, if any, in the resultant tertiary amine oxide product can be well below 30 ppb, and the free amine content, if any, can be well below 0.3 wt %. Use of such relatively exothermically achieved high temperatures in turn results in faster reaction rates and enables use of shorter reaction periods.

    摘要翻译： 在叔胺，过氧化氢水溶液，二氧化碳和任选的螯合剂和/或另外的水中形成或形成的水性反应介质中的叔胺与过氧化氢水溶液的放热氧化在约15至约25℃下开始 并且在搅拌反应混合物的同时，将温度绝热升温至约50至约100℃的温度。以这种方式，可以生产具有非常低水平（如果有的话）的叔胺氧化物， 的亚硝胺杂质，而不添加现有技术中推荐的金属和/或含磷成分。 尽管大部分反应在约50-100℃的温度下进行，但所得叔胺氧化物产物中的亚硝胺含量（如果有的话）可以远低于30ppb，游离胺含量， 如果有的话，可以很好地低于0.3wt％。 这种相对放热实现的高温的使用反过来导致更快的反应速率并且能够使用更短的反应时间。