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公开(公告)号：US06852879B2
公开(公告)日：2005-02-08
申请号：US10255339
申请日：2002-09-26
申请人： Frank G. Belmonte , Kenneth J. Abrams , James Delaney, Jr. , Scott G. Kramer , David L. Sikkenga
发明人： Frank G. Belmonte , Kenneth J. Abrams , James Delaney, Jr. , Scott G. Kramer , David L. Sikkenga
IPC分类号： B01D3/14 , B01D3/34 , C07C51/265 , C07C63/26 , C23G1/10 , C07C51/16 , C07C51/255
CPC分类号： C23G1/106 , B01D3/14 , B01D3/34 , C07C51/265 , C07C63/26
摘要： Disclosed is a method and solvent composition capable of removing iron oxide deposits from the surface of titanium components without substantially damaging the underlying titanium component. Iron oxide deposits may be removed from the surface of a titanium component by contacting the titanium component with the solvent composition of the invention. The solvent composition may then be removed from contact with the titanium component to obtain a recyclable solvent composition which is recycled into repeated contact with the titanium component. The solvent composition comprises an aqueous mixture of an organic acid and a hydrohalide acid.
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公开(公告)号：US5770764A
公开(公告)日：1998-06-23
申请号：US858362
申请日：1997-05-19
IPC分类号： C07C51/265 , C07C51/487 , C07C51/16
CPC分类号： C07C51/487 , C07C51/265
摘要： Economical processes are disclosed for preparing relatively pure polycarboxylic acid from typical crude products of liquid phase oxidation, which do not involve intermediate steps of ester formation or require any alkanol containing solvent, for purification of "crude" polycarboxylic acid containing impurities which include one or more monofunctional aromatic compounds, trifunctional aromatic compounds, and/or color causing organic compounds formed by oxidation of a corresponding substituted aromatic compound in a liquid phase, e.g. 2,6-naphthalene dicarboxylic acid by liquid phase oxidation of 2,6-dimethyl naphthalene. The invention provides integrate processes which comprise reacting crude oxidation product with a polyalkyl amine amine, e.g. trialkylamine, forming an aqueous solution of the salts thus obtained, separating deleterious compounds from the solution, and recovering the polyalkyl amine and a relatively pure polycarboxylic acid product.
摘要翻译： 公开的经济方法用于从典型的液相氧化粗产物制备相对纯的多元羧酸，其不涉及酯形成的中间步骤或需要任何含链烷醇的溶剂，用于纯化含有一种或多种含杂原子的“粗”多元羧酸 单官能芳族化合物，三官能芳族化合物和/或由液相中相应的取代芳族化合物氧化形成的有色化合物，例如 2,6-萘二甲酸通过液相氧化2,6-二甲基萘。 本发明提供了整合方法，其包括使粗氧化产物与多烷基胺胺反应， 三烷基胺，形成由此获得的盐的水溶液，从溶液中分离有害化合物，并回收多烷基胺和相对纯的多元羧酸产物。
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公开(公告)号：US5284987A
公开(公告)日：1994-02-08
申请号：US831167
申请日：1992-02-05
CPC分类号： C07C13/48 , C07C5/31 , B01J2219/00101 , Y10S203/06
摘要： A method for the acid catalyzed cyclization of an alkenylbenzene feedstock to a dimethyltetralin in a liquid phase reaction wherein the desired dimethyltetralin is removed from the reaction mixture by distillation simultaneously with the addition of the feedstock to the reaction mixture.
摘要翻译： 在液相反应中将烯基苯原料酸催化环化为二甲基四氢萘的方法，其中通过与反应混合物中加入原料同时从反应混合物中除去所需的二甲基儿茶烯。
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公开(公告)号：US4891467A
公开(公告)日：1990-01-02
申请号：US776221
申请日：1985-09-16
申请人： David L. Sikkenga
发明人： David L. Sikkenga
IPC分类号： C07C2/86
CPC分类号： C07C2/865 , C07C2/861 , C07C2/864 , C07C2/868 , C07C2529/86
摘要： A catalytic process is provided for the selective production of pseudocumene and durene by contacting a hydrocarbon feed containing benzene or a methyl substituted benzene under methylating conditions and in the presence of a methylating agent with a catalyst comprising AMS-1B crystalline borosilicate. In the resulting product pseudocumene and durene are obtained in selectivities higher than equilibrium concentrations of respectively trimethylbenzenes and tetramethylbenzenes.
摘要翻译： 提供催化方法，用于通过在甲基化条件下和甲基化剂与含有AMS-1B晶体硼硅酸盐的催化剂的存在下使包含苯或甲基取代的苯的烃进料接触来选择性地生产假枯烯和杜烯。 在所得产物中，以高于平均浓度的三甲基苯和四甲基苯的选择性获得假枯烯和杜烯。
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公开(公告)号：US20090171113A1
公开(公告)日：2009-07-02
申请号：US12089435
申请日：2006-12-30
CPC分类号： C07C51/09 , C08J11/24 , C08J2367/02 , Y02W30/706 , C07C63/26
摘要： A process for ethanolysis of PET is disclosed wherein a feed comprising PET is reacted with ethanol and recovering ethylene glycol and an aromatic diethyl ester such as diethyl isophthalate and/or diethyl terephthalate. PET, or a terpolymer comprising terephthalate monomer and ethylene glycol monomers, is reacted with ethanol and ethanol, diethyl terephthalate, ethylene glycol and optionally diethyl isophthalate are recovered. Recovered diethyl components can be subjected to liquid-phase oxidation to produce aromatic carboxylic acid. Acetic acid may also produced via liquid-phase oxidation of recovered diethyl components. The aromatic carboxylic acid can be used to form polymer.
摘要翻译： 公开了一种用于乙醇分解的方法，其中将包含PET的进料与乙醇反应并回收乙二醇和芳族二乙基酯如间苯二甲酸二乙酯和/或对苯二甲酸二乙酯。 PET或包含对苯二甲酸酯单体和乙二醇单体的三元共聚物与乙醇和乙醇反应，回收对苯二甲酸二乙酯，乙二醇和任选的间苯二甲酸二乙酯。 回收的二乙基成分可以进行液相氧化以产生芳族羧酸。 乙酸也可以通过回收的二乙基成分的液相氧化产生。 芳族羧酸可用于形成聚合物。
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公开(公告)号：US5728870A
公开(公告)日：1998-03-17
申请号：US726678
申请日：1996-10-07
IPC分类号： C07C51/09 , C07C51/255 , C07C51/265 , C07C51/42 , C07C51/43 , C07C51/487 , C07C51/493
CPC分类号： C07C51/09 , C07C51/255 , C07C51/265 , C07C51/42 , C07C51/43 , C07C51/487 , C07C51/493
摘要： A process for preparing purified 2,6-naphthalenedicarboxylic acid which comprises hydrolyzing a dialkyl-2,6-naphthalenedicarboxylate with water at a reaction temperature of at least about 450.degree. F. under liquid phase condition, the amount of water present being sufficient to solubilize, at the reaction temperature, at least about 10 percent of the 2,6-naphthalenedicarboxylic acid formed; and a process for purifying 2,6-naphthalenedicarboxylic acid comprising combining impure 2,6-naphthalenedicarboxylic acid with a purification solvent, heating the resulting mixture under liquid phase conditions at a temperature of at least about 500.degree. F. to form a product mixture and thereafter recovering from the product mixture purified 2,6-naphthalenedicarboxylic acid.
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公开(公告)号：US5629446A
公开(公告)日：1997-05-13
申请号：US467176
申请日：1995-06-06
IPC分类号： C07C51/09 , C07C51/255 , C07C51/265 , C07C51/42 , C07C51/43 , C07C51/487 , C07C51/493 , C07C51/21 , C08G63/18
CPC分类号： C07C51/09 , C07C51/255 , C07C51/265 , C07C51/42 , C07C51/43 , C07C51/487 , C07C51/493
摘要： A process for preparing purified 2,6-naphthalenedicarboxylic acid which comprises hydrolyzing a dialkyl-2,6-naphthalenedicarboxylate with water at a reaction temperature of at least about 450.degree. F. under liquid phase condition, the amount of water present being sufficient to solubilize, at the reaction temperature, at least about 10 percent of the 2,6-naphthalenedicarboxylic acid formed; and a process for purifying 2,6-naphthalenedicarboxylic acid comprising combining impure 2,6-naphthalenedicarboxylic acid with a purification solvent, heating the resulting mixture under liquid phase conditions at a temperature of at least about 500.degree. F. to form a product mixture and thereafter recovering from the product mixture purified 2,6-naphthalenedicarboxylic acid.
摘要翻译： 一种制备纯化的2,6-萘二甲酸的方法，其包括在液相条件下，在至少约450°F的反应温度下用水水解2,6-二硫化二烷基二烷基化物，存在的水量足以溶解 在反应温度下，至少约10％形成的2,6-萘二羧酸; 和2,6-萘二甲酸的纯化方法，包括将不纯的2,6-萘二羧酸与纯化溶剂组合，在液相条件下在至少约500°F的温度下加热得到的混合物以形成产物混合物， 然后从产物混合物中回收纯化的2,6-萘二甲酸。
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8.发明授权Preparation of a dimethyltetralin by cyclizing an orthotolylpentene phenylhexene using an ultra-stable crystalline aluminosilicate molecular sieve y-zeolite 失效通过使用超稳定的结晶硅铝酸盐分子筛y-沸石环化环戊基戊烯或苯基己烯来制备二甲基儿茶酚
公开(公告)号：US5401892A
公开(公告)日：1995-03-28
申请号：US24152
申请日：1993-02-26
CPC分类号： C07C15/24 , C07C13/48 , C07C5/2737 , C07C5/31 , B01J2219/00101 , C07C2102/10 , C07C2529/08 , C07C2529/12 , C07C2529/74
摘要： A method for preparing one or more specific dimethyltetralins from either 5-(o-, m-, or p-tolyl)-pent-1- or -2-ene or 5-phenyl-hex-1- or -2-ene, and optionally for preparing one or more specific dimethylnaphthalenes from the aforesaid dimethyltetralins is disclosed wherein the orthotolylpentene or phenylhexane is cyclized to the dimethyltetralin using an ultra-stable crystalline aluminosilicate molecular sieve Y-zeolite.
摘要翻译： 从5-（邻 - ，对 - 或对 - 甲苯基） - 戊-1-或2-烯或5-苯基 - 六-1-或-2-烯制备一种或多种特异性二甲基儿茶素的方法， 并且任选地用于从上述二甲基儿茶素制备一种或多种特定的二甲基萘，其中使用超稳定的结晶硅铝酸盐分子筛Y-沸石将邻位异戊烯基或苯基己烷环化成二甲基儿茶酚。
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公开(公告)号：US5030781A
公开(公告)日：1991-07-09
申请号：US539007
申请日：1990-06-15
CPC分类号： C07C13/48 , C07C5/31 , B01J2219/00101
摘要： A method for preparing one or more specific dimethyltetralins by cyclization of either 5-(o-, m, or p-tolyl)-pent-1- or -2-ene or 5-phenyl-hex-1- or -2-ene, with additional cyclization treatment, and optionally cracking, of a heavy fraction of the cyclization product, is disclosed.
摘要翻译： 通过5-（邻 - ，间或对 - 甲苯基） - 戊-1-或2-烯或5-苯基 - 六-1-或-2-烯环的环化制备一种或多种特定的二甲基色烯的方法 ，公开了环化产物的重馏分的额外的环化处理和任选的裂解。
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公开(公告)号：US5012024A
公开(公告)日：1991-04-30
申请号：US316309
申请日：1989-02-27
摘要： A method for preparing one or more dimethylnaphthalenes from one or more dimethyltetralins, and optionally for preparing one or more other specific dimethylnaphthalenes by isomerization of the aforesaid dimethylnaphthal-dimethylnaphthalene(s) is disclosed.
摘要翻译： 公开了一种由一种或多种二甲基儿茶素制备一种或多种二甲基萘的方法，并且任选通过上述二甲基萘二甲基萘的异构化制备一种或多种其它特定的二甲基萘。
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