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公开(公告)号：EP0785181B1
公开(公告)日：2001-12-05
申请号：EP97300232.2
申请日：1997-01-15
CPC分类号： C07C37/74 , C07C37/685 , C07C37/84 , C07C39/16
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公开(公告)号：EP0680943B1
公开(公告)日：1998-08-12
申请号：EP95302537.6
申请日：1995-04-18
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公开(公告)号：EP0785181A2
公开(公告)日：1997-07-23
申请号：EP97300232.2
申请日：1997-01-15
CPC分类号： C07C37/74 , C07C37/685 , C07C37/84 , C07C39/16
摘要： A method for recovering substantially pure p,p-bisarylols from a mixture comprising the same by subjecting the mixture to vacuum distillation and melt crystallization in the absence of an adduct crystallization and the generation of a reaction recycle stream.
摘要翻译： 一种从含有该物质的混合物中回收基本上纯的p，p-双芳基醇的方法，该方法是在没有加合物结晶和产生反应再循环物流的条件下对该混合物进行真空蒸馏和熔融结晶。
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公开(公告)号：EP0583937B1
公开(公告)日：1997-01-22
申请号：EP93306333.1
申请日：1993-08-11
CPC分类号： C07C68/005 , C07C69/96
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公开(公告)号：EP1674443A1
公开(公告)日：2006-06-28
申请号：EP05257691.5
申请日：2005-12-15
发明人： Pressman, Eric James , Kloppenburg, Lioba Maria , Whitney, John Morgan , Namjoshi, Abhijit , Oulman, Spencer Thomas
IPC分类号： C07C51/00 , C07D307/89 , C07C51/573 , C07C51/47 , C07C51/56 , C07C51/087 , C07C63/331
CPC分类号： C07C51/087 , C07C51/47 , C07C51/56 , C07C51/573 , C07C65/24 , C07C63/331
摘要： A method of preparing a purified dianhydride is provided comprising the steps of preparing a first mixture comprising water, at least one inorganic acid, and at least one dianhydride, said dianhydride comprising at least one impurity which is soluble in aqueous acid; heating said first mixture until substantially all of said dianhydride is converted to a tetraacid comprised in a second mixture; filtering at least a portion of said second mixture to provide a solid tetraacid and a filtrate, said filtrate comprising at least a portion of said impurity; and heating the tetraacid provided in a solvent with concurrent distillation of water to provide a third mixture comprising a purified dianhydride and a solvent.
摘要翻译： 提供了制备纯化二酐的方法，包括以下步骤：制备包含水，至少一种无机酸和至少一种二酐的第一混合物，所述二酐包含至少一种可溶于酸的水溶液的杂质; 加热所述第一混合物直到基本上所有所述二酸酐转化为包含在第二混合物中的四元酸; 过滤所述第二混合物的至少一部分以提供固体四元酸和滤液，所述滤液包含所述杂质的至少一部分; 并且在同时蒸馏水中加热在溶剂中提供的四酸，以提供包含纯化的二酐和溶剂的第三混合物。
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6.发明授权Method for preparing diaryl carbonates employing hexaalkylguanidinium halides 失效一种用于使用Hexaalkylguannidiniumhalogeniden生产碳酸二芳酯的过程
公开(公告)号：EP0858991B1
公开(公告)日：2002-01-16
申请号：EP98300911.9
申请日：1998-02-09
CPC分类号： C07C68/005 , C07C69/96
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7.发明公开
公开(公告)号：EP0869110A1
公开(公告)日：1998-10-07
申请号：EP98302050.4
申请日：1998-03-18
CPC分类号： C07C68/005 , C07C69/96
摘要： Hydroxyaromatic compounds such as phenol are converted to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst package and an added diluent free from active hydrogen atoms. The preferred catalyst packages comprise a Group VIIIB metal or salt thereof, an inorganic cocatalyst, and organic cocatalysts and a bromide or chloride source. The amount of added diluent is an effective amount to improve selectivity to diaryl carbonate. Preferred diluents are diphenyl carbonate and N-methylpyrrolidone.
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8.发明公开Method for preparing diaryl carbonates employing hexaalkylguanidinium halides 失效Verfahren zur Herstellung von Diarylcarbonate unter Verwendung von Hexaalkylguannidiniumhalididen
公开(公告)号：EP0858991A1
公开(公告)日：1998-08-19
申请号：EP98300911.9
申请日：1998-02-09
CPC分类号： C07C68/005 , C07C69/96
摘要： Hydroxyaromatic compounds such as phenol are converted to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst package which typically comprises a group VIIIB metal or compound thereof, an inorganic cocatalyst, an organic cocatalyst and a hexaalkylguanidinium bromide or chloride, preferably bromide. The use of the hexaalkylguanidinium salt causes an increase in the yield of diaryl carbonate without a decrease in selectivity.
摘要翻译： 在通常包含第VIIIB族金属或其化合物，无机助催化剂，有机助催化剂和六烷基胍溴化物或氯化物的催化剂包的存在下，通过与氧和一氧化碳反应，将羟基芳族化合物如苯酚转化为碳酸二芳基酯 溴化物。 六烷基胍盐的使用导致碳酸二芳基酯的产率增加，而不会降低选择性。
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9.发明公开Method for preparing and purifying 1,1,1-tris(4-hydroxphenyl)ethane 失效Methode zur Vorbereitung und Reinigung von 1,1,1.-三（4-羟基苯基）乙烷
公开(公告)号：EP0847975A1
公开(公告)日：1998-06-17
申请号：EP97310071.2
申请日：1997-12-12
摘要： 1,1,1-Tris(4-hydroxyphenyl)ethane, a branching agent for polycarbonates, is prepared by the reaction of phenol with 2,4-pentanedione in the presence of sulfuric acid and at least one mercapto sulfonic acid such as 3-mercaptopropanesulfonic acid as promoter. By employing specific proportions of the promoter and sulfuric acid, high product yields can be obtained in relatively short times.
摘要翻译： 通过苯酚与2,4-戊二酮在硫酸和至少一种巯基磺酸如3-甲基苯磺酸存在下的反应制备1,1,1-三（4-羟苯基）乙烷，用于聚碳酸酯的支化剂， 巯基丙磺酸作为启动子。 通过使用特定比例的助催化剂和硫酸，可以在相对短的时间内获得高产率。
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公开(公告)号：EP0583938B1
公开(公告)日：1997-11-05
申请号：EP93306334.9
申请日：1993-08-11
CPC分类号： C07C68/08 , C07C68/005 , C07C69/96
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