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21. 发明授权

US06559344B2 Hydroformylation 失效
公开(公告)号：US06559344B2
公开(公告)日：2003-05-06
申请号：US10076429
申请日：2002-02-19
申请人： Thomas Mackewitz
发明人： Thomas Mackewitz
IPC分类号： C07C4549
CPC分类号： C07C45/50 , C07C47/02
摘要： In a process for the hydroformylation of ethylenically unsaturated compounds, at least one complex or compound of a metal of transition group VIII with at least one bidentate phosphine ligand is used as hydroformylation catalyst and at least one of the reaction steps following the hydroformylation reaction is carried out essentially in the absence of carbon monoxide and hydrogen and in the presence of at least one monodentate phosphine ligand.

22. 发明授权

US06252117B1 Preparation of phosphabenzene compounds 失效
标题翻译：膦酸化合物的制备
公开(公告)号：US06252117B1
公开(公告)日：2001-06-26
申请号：US09525064
申请日：2000-03-14
申请人： Thomas Mackewitz , Michael Röper , Bernhard Breit
发明人： Thomas Mackewitz , Michael Röper , Bernhard Breit
IPC分类号： C07F950
CPC分类号： C07F9/6568
摘要： Phosphabenzene compounds of the formulae I and II where R1 to R6 are identical or different and are, for example, hydrogen, are prepared by reacting corresponding pyrylium salts with PH3 in the presence or absence of a solvent or diluent. The pyrylium salts are combined with PH3 at above 0° C. and reacted at a temperature in the range from 0° C. to 200° C. and a pressure above 1 bar without addition of an acid catalyst or a base.
摘要翻译：在存在或不存在溶剂或稀释剂的情况下，通过使相应的吡喃鎓盐与PH 3反应来制备其中R 1至R 6相同或不同且为例如氢的式I和II的亚膦酸化合物。吡喃鎓盐与0℃下的PH 3结合，在0℃至200℃的温度和1巴以上的温度下反应，不加酸催化剂或碱。

23. 发明申请

US20090198073A1 PREPARATION OF PHTHALIC ANHYDRIDE BY GAS PHASE OXIDATION OF O-XYLENE 有权
标题翻译：气相氧化制备邻苯二甲酸二异氰酸酯
公开(公告)号：US20090198073A1
公开(公告)日：2009-08-06
申请号：US12301352
申请日：2007-05-18
申请人： Thomas Mackewitz , Frank Rosowski , Andreas Tenten
发明人： Thomas Mackewitz , Frank Rosowski , Andreas Tenten
IPC分类号： C07D317/46
CPC分类号： C07D307/89 , C07C51/265 , C07C63/16
摘要： A process is described for preparing phthalic anhydride by catalytic gas phase oxidation of o-xylene. In, in a main reactor, a gaseous mixture of o-xylene and an oxygenous gas is passed through at least two reaction zones whose temperature can be controlled independently, and converted to a gaseous intermediate reaction product which comprises unconverted o-xylene, phthalic anhydride underoxidation products and phthalic anhydride, and the intermediate reaction product is introduced into a postreactor, wherein the temperature of the reaction zones in the main reactor is regulated in such a way that the concentration of unconverted o-xylene in the intermediate reaction product is at least 0.5% by weight. The process allows an increase in the overall yield of phthalic anhydride without or without significant deterioration in the product quality.
摘要翻译：描述了通过邻二甲苯的催化气相氧化制备邻苯二甲酸酐的方法。在主反应器中，邻二甲苯和氧气的气态混合物通过至少两个反应区，其温度可独立控制，并转化成气态中间反应产物，其包含未转化的邻二甲苯，邻苯二甲酸酐未反应产物和邻苯二甲酸酐，并将中间反应产物引入后反应器中，其中主反应器中反应区的温度调节为使中间反应产物中未转化的邻二甲苯的浓度至少为 0.5重量％。该方法允许邻苯二甲酸酐的总产率提高，而不会产生质量的显着劣化。

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