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公开(公告)号：EP1786752A1
公开(公告)日：2007-05-23
申请号：EP05792468.0
申请日：2005-08-29
发明人： WONDERS, Alan, George , LIGHTFOOT, Thomas, Young , SUMNER, Charles, Edwan, Jr. , ARNOLD, Ernest, William, III , FUGATE, Eric, Jackson , HITCHCOCK, Charles, Helton , TENNANT, Brent, Alan , WOODRUFF, Thomas, Earl , AYCOCK, John, David
IPC分类号： C07C51/235 , C07C51/265
CPC分类号： C07C51/265 , C07C51/42 , C07C63/26
摘要： Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.
摘要翻译： 公开了用于更有效和经济地进行可氧化化合物的液相氧化的优化方法和设备。 这种液相氧化在气泡塔反应器中进行，其在相对低的温度下提供高效反应。 当氧化的化合物是对二甲苯并且来自氧化反应的产物是粗对苯二甲酸（CTA）时，这种CTA产物可以通过比如果CTA由常规高温形成时可以采用的更经济的技术来纯化和分离 氧化过程。
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公开(公告)号：EP1569887A1
公开(公告)日：2005-09-07
申请号：EP03790245.9
申请日：2003-12-03
发明人： SUMNER, Charles, Edwan, Jr. , BOWERS, David, Taylor , GIBSON, Philip, Edward , LIN, Robert , ARNOLD, Ernest, William, III , FUGATE, Eric, Jackson , STEVENSON, George, M. , MCCLANAHAN, Wayne , CARRELL, Harry, Lee
IPC分类号： C07C51/47 , C07C63/26 , C07C51/265
摘要： Disclosed is a process to produce a purified carboxylic acid product. The process comprises removing impurities from a crude carboxylic acid slurry in a solid-liquid displacement zone to form a slurry product. The slurry product if further treated in a staged oxidation zone and a crystallization zone to from a crystallized product. The crystallized product is further cooled in a cooling zone and subsequently filtered and dried in a filtration and drying zone. The process produces purified carboxylic acid product having good color and low impurity levels without the use of purification steps like hydrogenation.
摘要翻译： 公开了一种生产纯化羧酸产品的方法。 该方法包括从固液置换区中的粗制羧酸淤浆中除去杂质以形成淤浆产物。 如果在分级氧化区和结晶区中进一步处理浆料产物以从结晶产物中除去。 结晶产物在冷却区进一步冷却，随后过滤并在过滤和干燥区中干燥。 该方法生产具有良好颜色和低杂质水平的纯化羧酸产物，而不使用氢化等纯化步骤。
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公开(公告)号：EP0655052A1
公开(公告)日：1995-05-31
申请号：EP93918534.0
申请日：1993-08-02
发明人： SUMNER, Charles, Edwan, Jr. , GUSTAFSON, Bruce, LeRoy , ARNOLD, Ernest, William, III , FUGATE, Eric, Jackson , FULLER, Dewey, Wayne, Jr.
CPC分类号： C07C51/265 , Y02P20/582 , C07C63/331
摘要： Provided is a process for preparing 2,5-diphenylterephthalic acid, which is useful in preparing certain polyesters, especially liquid-crystalline polyesters. In this process, p-xylene is di-alkylated with cyclohexene to provide 2,5-dicyclo-hexyl-p-xylene, which is in turn dehydrogenated to provide 2,5-diphenylxylene. 2,5-Diphenylxylene is then oxidized to provide 2,5-diphenylterephthalic acid by utilization of a cobaltous/manganous/bromide oxidation system.
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