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1. 发明授权

US6037497A Process for producing amine oxides 失效
标题翻译：氧化胺生产工艺
公开(公告)号：US6037497A
公开(公告)日：2000-03-14
申请号：US162956
申请日：1998-09-29
申请人： Dustin H. Thomas , Douglas H. Krzystowczyk , Luc G. Six
发明人： Dustin H. Thomas , Douglas H. Krzystowczyk , Luc G. Six
IPC分类号： C07C291/04 , C07C292/02
CPC分类号： C07C291/04
摘要： A process is described in which tertiary amine is oxidized with hydrogen peroxide in the presence of carbon dioxide until the reaction mass contains (i) about 0.5 to about 6.5%, and preferably about 1 to about 2.5%, of unreacted free amine, (ii) carbon dioxide, and (iii) unreacted hydrogen peroxide. At this point individual portions of the reaction mass are dispensed into a plurality of shipping containers, or alternatively, the reaction mass is transferred to a cooling vessel, cooled therein, and then dispensed into a plurality of shipping containers. Thereafter the reaction is allowed to slowly continue to completion at ambient temperature in the shipping containers with venting of off-gases, as required. The process makes it possible to produce amine oxides with increased plant throughput without need for additional plant reaction equipment such as glass-lined reactors, and the consequent substantial additional capital investment. Also the process enables production of amine oxides having, if any, very low levels of nitrosoamine impurities without increasing reactor residence time and without need for such additional plant reaction equipment and associated additional capital outlay.
摘要翻译：描述了一种方法，其中叔胺在二氧化碳存在下用过氧化氢氧化，直到反应物料包含（i）约0.5至约6.5％，优选约1至约2.5％的未反应游离胺，（ii ）二氧化碳，和（iii）未反应的过氧化氢。此时，将反应物质的各个部分分配到多个运输容器中，或者，将反应物质转移到冷却容器中，在其中冷却，然后分配到多个运输容器中。此后，根据需要，允许反应在环境温度下在运输容器中缓慢地继续完成，排放废气。该方法使得可以生产具有增加的植物产量的氧化胺，而不需要额外的植物反应设备，例如玻璃衬里的反应器，并且因此大量额外的资本投资。此外，该方法还能够生产具有非常低水平的亚硝基杂质的氧化胺，而不增加反应器停留时间，并且不需要这种额外的植物反应设备和相关的附加资本支出。

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