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1.发明申请公开(公告)号：US20220056249A1
公开(公告)日：2022-02-24
申请号：US17410138
申请日：2021-08-24
发明人： Christian Ohm , Arvind Yadav
摘要： A polymer composition for producing gel extruded articles is described. The polymer composition contains polyethylene particles combined with a plasticizer. The polyethylene polymer has a narrow molecular weight distribution. Polymer articles made in accordance with the present disclosure have enhanced strength properties. In one embodiment, the polymer composition is used to form a porous membrane for use as a separator in electronic devices.
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公开(公告)号：US20210206734A1
公开(公告)日：2021-07-08
申请号：US17206230
申请日：2021-03-19
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
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：US10954203B2
公开(公告)日：2021-03-23
申请号：US16984305
申请日：2020-08-04
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D291/06 , A23L27/30
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：US10590098B2
公开(公告)日：2020-03-17
申请号：US16273454
申请日：2019-02-12
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D209/06 , C07D291/06 , A23L27/30 , C07C235/74
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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公开(公告)号：US20190169146A1
公开(公告)日：2019-06-06
申请号：US16273454
申请日：2019-02-12
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D291/06 , C07C235/74 , A23L27/30
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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公开(公告)号：US10233163B2
公开(公告)日：2019-03-19
申请号：US16014431
申请日：2018-06-21
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D291/06 , A23L27/30
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：US10961207B2
公开(公告)日：2021-03-30
申请号：US16984338
申请日：2020-08-04
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
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：US10759770B2
公开(公告)日：2020-09-01
申请号：US16684692
申请日：2019-11-15
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D209/06 , C07D291/06 , A23L27/30
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：US10590097B2
公开(公告)日：2020-03-17
申请号：US16273404
申请日：2019-02-12
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D209/06 , 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：US10590096B2
公开(公告)日：2020-03-17
申请号：US16273376
申请日：2019-02-12
发明人： Christoph Mollenkopf , Peter Groer , Arvind Yadav
IPC分类号： C07D291/06 , A23L27/30
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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