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1. 发明申请

US20090043124A1 Process for the production of trimellitic acid 有权
标题翻译：偏苯三酸生产工艺
公开(公告)号：US20090043124A1
公开(公告)日：2009-02-12
申请号：US11919830
申请日：2006-05-06
申请人： Gian Luca Castiglioni , Roberto Pirola , Carlo Fumagalli
发明人： Gian Luca Castiglioni , Roberto Pirola , Carlo Fumagalli
IPC分类号： C07C51/23
CPC分类号： C07C51/265 , C07C63/307
摘要： Trimellitic acid is produced by oxidation of pseudocumene in acetic acid at temperatures between 130 and 240° C. in the presence of a catalyst composition containing cobalt, manganese and bromine. The process comprises the stages of: (i) simultaneously feeding pseudocumene and air or an oxygen-containing gas into a solution containing acetic acid and the catalyst composition, at an addition rate resulting in an oxygen concentration in the off-gas of less than 8 vol %, and at a temperature and a pressure sufficient to result in 5 to 25 mol % of the total amount of oxygen required to oxidize the pseudocumene to trimellitic acid being consumed, and (ii) feeding air or an oxygen-containing gas into the reaction mixture obtained in stage (i) until essentially all of the pseudocumene has been consumed and a molar yield of trimellitic acid of at least 90% has been obtained. There is no supplementation of catalyst after stage (i).
摘要翻译：在含有钴，锰和溴的催化剂组合物的存在下，在130-240℃的温度下，在乙酸中氧化假枯烯来制备偏苯三酸。该方法包括以下阶段：（i）同时将假阳离子和空气或含氧气体同时加入到含有乙酸和催化剂组合物的溶液中，加入量使废气中的氧浓度小于8 体积％，并且在足以导致氧化假单胞菌被消耗的偏苯三酸所需的氧的总量的5至25mol％的温度和压力下，和（ii）将空气或含氧气体进料到在步骤（i）中获得的反应混合物直到基本上所有的假枯烯已被消耗，并且已经获得至少90％的偏苯三酸的摩尔产率。在阶段（i）之后没有催化剂的补充。

2. 发明授权

US07709681B2 Process for the production of trimellitic acid 有权
标题翻译：偏苯三酸生产工艺
公开(公告)号：US07709681B2
公开(公告)日：2010-05-04
申请号：US11919830
申请日：2006-05-06
申请人： Gian Luca Castiglioni , Roberto Pirola , Carlo Fumagalli
发明人： Gian Luca Castiglioni , Roberto Pirola , Carlo Fumagalli
IPC分类号： C07C51/255
CPC分类号： C07C51/265 , C07C63/307
摘要： Trimellitic acid is produced by oxidation of pseudocumene in acetic acid at temperatures between 130 and 240° C. in the presence of a catalyst composition containing cobalt, manganese and bromine. The process comprises the stages of: (i) simultaneously feeding pseudocumene and air or an oxygen-containing gas into a solution containing acetic acid and the catalyst composition, at an addition rate resulting in an oxygen concentration in the off-gas of less than 8 vol %, and at a temperature and a pressure sufficient to result in 5 to 25 mol % of the total amount of oxygen required to oxidize the pseudocumene to trimellitic acid being consumed, and (ii) feeding air or an oxygen-containing gas into the reaction mixture obtained in stage (i) until essentially all of the pseudocumene has been consumed and a molar yield of trimellitic acid of at least 90% has been obtained. There is no supplementation of catalyst after stage (i).
摘要翻译：在含有钴，锰和溴的催化剂组合物的存在下，在130-240℃的温度下，在乙酸中氧化假枯烯来制备偏苯三酸。该方法包括以下阶段：（i）同时将假阳离子和空气或含氧气体同时加入到含有乙酸和催化剂组合物的溶液中，加入量使废气中的氧浓度小于8 体积％，并且在足以导致氧化假单胞菌被消耗的偏苯三酸所需的氧的总量的5至25mol％的温度和压力下，和（ii）将空气或含氧气体进料到在步骤（i）中获得的反应混合物直到基本上所有的假枯烯已被消耗，并且已经获得至少90％的偏苯三酸的摩尔产率。在阶段（i）之后没有催化剂的补充。

3. 发明授权

US06492535B1 Process for the production of gamma-butyrolactone 失效
标题翻译： γ-丁内酯生产工艺
公开(公告)号：US06492535B1
公开(公告)日：2002-12-10
申请号：US09600411
申请日：2000-07-17
申请人： Gian Luca Castiglioni , Carlo Fumagalli
发明人： Gian Luca Castiglioni , Carlo Fumagalli
IPC分类号： C07D30720
CPC分类号： C07D315/00
摘要： A process for the production of gamma-butyrolactone. Starting from maleic and/or succinic anhydride the conversion takes place in the vapor phase of a Cu/Cr catalyst.
摘要翻译：制备γ-丁内酯的方法。从马来酸和/或琥珀酸酐开始，转化在Cu / Cr催化剂的气相中进行。

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