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1. 发明申请

US20120283464A1 PROCESS FOR THE PRODUCTION OF HIGH-PURITY DIMETHYL CARBONATE 有权
标题翻译：生产高纯二甲基碳酸酯的方法
公开(公告)号：US20120283464A1
公开(公告)日：2012-11-08
申请号：US13508171
申请日：2010-10-29
申请人： Maurizio Ghirardini , Laura De Nardo , Elena Novello
发明人： Maurizio Ghirardini , Laura De Nardo , Elena Novello
IPC分类号： C07C68/08 , C07C69/96
CPC分类号： C07C68/08 , C07C69/96
摘要： A process for producing a high-purity dimethyl carbonate, which includes: (I) cooling a commercial grade dimethyl carbonate containing 1 ppm or more of chlorine to a temperature from +6° C. to −5° C. at a rate from 0.5-2° C./hour, to obtain a first solid dimethyl carbonate; (II) heating the first solid dimethyl carbonate to a temperature from −5° C. to +6° C. at a rate of 1-5° C./hour, to obtain a mixture comprising a second solid dimethyl carbonate and a predetermined amount of a first liquid dimethyl carbonate; (III) separating the first liquid dimethyl carbonate from the mixture, to obtain the second solid dimethyl carbonate; (IV) heating the second solid dimethyl carbonate to a temperature from 20° C. to 40° C., to obtain a second liquid dimethyl carbonate, wherein the second liquid dimethyl carbonate has a purity degree higher than 99.99% and a chlorine content lower than or equal to 1 ppm.
摘要翻译：一种生产高纯度碳酸二甲酯的方法，其包括：（I）以0.5的速度将含有1ppm或更多氯的商业级碳酸二甲酯冷却至+ 6℃至-5℃的温度 -2℃/小时，得到第一固体碳酸二甲酯; （II）以1-5℃/小时的速度将第一固体碳酸二甲酯加热至-5℃至+ 6℃的温度，以获得包含第二固体碳酸二甲酯和预定的第一液体碳酸二甲酯的量; （III）从混合物中分离第一液体二甲基碳酸酯，得到第二固体碳酸二甲酯; （IV）将第二固体碳酸二甲酯加热至20℃至40℃的温度，得到第二液体碳酸二甲酯，其中第二液体碳酸二甲酯的纯度高于99.99％，氯含量较低大于等于1ppm。

2. 发明授权

US09006476B2 Process for the production of high-purity dimethyl carbonate 有权
标题翻译：生产高纯度碳酸二甲酯的方法
公开(公告)号：US09006476B2
公开(公告)日：2015-04-14
申请号：US13508171
申请日：2010-10-29
申请人： Maurizio Ghirardini , Laura De Nardo , Elena Novello
发明人： Maurizio Ghirardini , Laura De Nardo , Elena Novello
IPC分类号： C07C68/08 , C07C69/96
CPC分类号： C07C68/08 , C07C69/96
摘要： A process for producing a high-purity dimethyl carbonate, which includes: (I) cooling a commercial grade dimethyl carbonate containing 1 ppm or more of chlorine to a temperature from +6° C. to −5° C. at a rate from 0.5-2° C./hour, to obtain a first solid dimethyl carbonate; (II) heating the first solid dimethyl carbonate to a temperature from −5° C. to +6° C. at a rate of 1-5° C./hour, to obtain a mixture comprising a second solid dimethyl carbonate and a predetermined amount of a first liquid dimethyl carbonate; (III) separating the first liquid dimethyl carbonate from the mixture, to obtain the second solid dimethyl carbonate; (IV) heating the second solid dimethyl carbonate to a temperature from 20° C. to 40° C., to obtain a second liquid dimethyl carbonate, wherein the second liquid dimethyl carbonate has a purity degree higher than 99.99% and a chlorine content lower than or equal to 1 ppm.
摘要翻译：一种生产高纯度碳酸二甲酯的方法，其包括：（I）以0.5的速度将含有1ppm或更多氯的商业级碳酸二甲酯冷却至+ 6℃至-5℃的温度 -2℃/小时，得到第一固体碳酸二甲酯; （II）以1-5℃/小时的速度将第一固体碳酸二甲酯加热至-5℃至+ 6℃的温度，以获得包含第二固体碳酸二甲酯和预定的第一液体碳酸二甲酯的量; （III）从混合物中分离第一液体二甲基碳酸酯，得到第二固体碳酸二甲酯; （IV）将第二固体碳酸二甲酯加热至20℃至40℃的温度，得到第二液体碳酸二甲酯，其中第二液体碳酸二甲酯的纯度高于99.99％，氯含量较低大于等于1ppm。

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