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公开(公告)号：EP3319949A1
公开(公告)日：2018-05-16
申请号：EP17772252.7
申请日：2017-09-14
IPC分类号： C07D291/06
摘要： Compositions and processes for producing high purity acesulfame potassium are described. One process comprises the steps of providing a crude acesulfame potassium composition comprising acesulfame potassium and acetoacetamide, concentrating the crude acesulfame potassium composition to form a water stream and an intermediate acesulfame potassium composition comprising acesulfame potassium and less than 33 wppm acetoacetamide, and separating the intermediate acesulfame potassium composition to form the finished acesulfame potassium composition comprising acesulfame potassium and less than 33 wppm acetoacetamide. The concentrating step is conducted at a temperature below 90° C. and the separating step is conducted at a temperature at or below 35° C.
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公开(公告)号：EP2560919A1
公开(公告)日：2013-02-27
申请号：EP11716770.0
申请日：2011-04-18
IPC分类号： C01C1/242 , C07C209/86 , C07C211/05 , C07D291/06
CPC分类号： C07C209/86 , B01D15/00 , B01D53/58 , B01D2251/50 , B01D2257/406 , C01C1/242 , C07D291/06 , C07C211/05
摘要： The invention relates to a process of producing an ammonium salt composition. The process comprises the steps of providing a process stream comprising sulfuric acid and at least one tertiary amine contacting the process stream with ammonia under conditions effective to form a waste stream and a product stream. The waste stream comprises water, the tertiary amine, and ammonia and the product stream comprises a first amount of ammonium salt. The process further comprises the steps of deriving from the waste stream an off gas stream comprising a preliminary amount of ammonia and contacting the off gas stream with an acid under conditions effective to form an ammonium salt stream and a purge stream. The ammonium salt stream comprises a second amount of ammonium salt and the purge stream comprises a reduced amount of ammonia, which is less than the preliminary amount.
摘要翻译： 本发明涉及生产铵盐组合物的方法。 该方法包括以下步骤：在有效形成废物流和产物流的条件下，提供包含硫酸和至少一种叔胺的工艺物流，所述叔胺使工艺物流与氨接触。 废物流包含水，叔胺和氨，并且产物流包含第一量的铵盐。 该方法进一步包括从废物流得到包含初步量的氨的废气流并在有效形成铵盐流和清洗流的条件下使废气流与酸接触的步骤。 铵盐流包含第二量的铵盐，并且吹扫流包含减少量的氨，其小于初始量。
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公开(公告)号：EP2560919B1
公开(公告)日：2015-10-28
申请号：EP11716770.0
申请日：2011-04-18
IPC分类号： C01C1/242 , C07C209/86 , C07C211/05 , C07D291/06
CPC分类号： C07C209/86 , B01D15/00 , B01D53/58 , B01D2251/50 , B01D2257/406 , C01C1/242 , C07D291/06 , C07C211/05
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公开(公告)号：EP3744716A1
公开(公告)日：2020-12-02
申请号：EP20186500.3
申请日：2017-09-14
IPC分类号： C07D291/06 , A23L27/30
摘要： A process for producing acesulfame potassium, the process comprising the steps of providing a cyclizing agent composition comprising a cyclizing agent and a solvent and having an initial temperature, cooling the cyclizing agent composition to form a cooled cyclizing agent composition having a cooled temperature less than 35°C, reacting an acetoacetamide salt with the cyclizing agent in the cooled cyclizing agent composition to form a cyclic sulfur trioxide adduct composition comprising cyclic sulfur trioxide adduct; and, forming from the cyclic sulfur trioxide adduct in the cyclic sulfur trioxide adduct composition the finished acesulfame potassium composition comprising non-chlorinated acesulfame potassium and less than 39 wppm 5-chloro-acesulfame potassium. The cooled temperature is at least 2°C less than the initial temperature.
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公开(公告)号：EP2794483A1
公开(公告)日：2014-10-29
申请号：EP12818846.3
申请日：2012-12-17
IPC分类号： C01C1/24 , C07C209/86 , C07D291/06
CPC分类号： C01C1/24 , C07C231/24 , C07D291/06 , Y02P20/127 , C07C237/22
摘要： In one embodiment, the invention is to a process for purifying a by-product stream. The process comprises the step of providing a by-product stream comprising an ammonium salt, dimerized amide, and optionally water. The process further comprises the step of precipitating at least a portion of the dimerized amide in the by-product stream to form solid dimerized amide. The process further comprises the step of separating the solid dimerized amide from the by-product stream to form a treated by-product stream comprising less than 1 wt.% solid dimerized amide.
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公开(公告)号：EP3907220A1
公开(公告)日：2021-11-10
申请号：EP21179829.3
申请日：2017-09-14
IPC分类号： C07D291/06
摘要： Compositions and processes for producing high purity acesulfame potassium are described. One process comprises the steps of forming a cyclic sulfur trioxide adduct; hydrolyzing the cyclic sulfur trioxide adduct to form an acesulfame-H composition comprising acesulfame-H; neutralizing the acesulfame-H in the acesulfame-H composition to form a crude acesulfame potassium composition comprising acesulfame potassium and less than 2800 wppm acetoacetamide-N-sulfonic acid, wherein the neutralizing step is conducted or maintained at a pH at or below 11.0; and treating the crude acesulfame potassium composition to form the finished acesulfame potassium composition comprising acesulfame potassium and less than 37 wppm acetoacetamide-N-sulfonic acid.
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公开(公告)号：EP3623363A1
公开(公告)日：2020-03-18
申请号：EP19205119.1
申请日：2017-09-14
IPC分类号： C07D291/06
摘要： High purity acesulfame potassium obtained by an improved process. In one embodiment, the process comprises the steps of contacting a solvent, e.g., dichloromethane, and a cyclizing agent, e.g., sulfur trioxide, to form a cyclizing agent composition and reacting an acetoacetamide salt with the cyclizing agent in the composition to form a cyclic sulfur trioxide adduct. The contact time is less than 60 minutes. The process also comprises forming from the cyclic sulfur trioxide adduct composition a finished acesulfame potassium composition comprising non-chlorinated, e.g., non-chlorinated, acesulfame potassium and less than 35 wppm 5-halo acesulfame potassium, preferably less than 5 wppm.
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公开(公告)号：EP3317260A1
公开(公告)日：2018-05-09
申请号：EP17772249.3
申请日：2017-09-14
IPC分类号： C07D291/06
摘要： Improved processes for producing high purity acesulfame potassium. In one embodiment, the process comprises the steps of contacting a solvent, e.g., dichloromethane, and a cyclizing agent, e.g., sulfur trioxide, to form a cyclizing agent composition and reacting an acetoacetamide salt with the cyclizing agent in the composition to form a cyclic sulfur trioxide adduct. The contact time is less than 60 minutes. The process also comprises forming from the cyclic sulfur trioxide adduct composition a finished acesulfame potassium composition comprising non-chlorinated, e.g., non-chlorinated, acesulfame potassium and less than 35 wppm 5-halo acesulfame potassium, preferably less than 5 wppm.
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