-
公开(公告)号：US5563294A
公开(公告)日：1996-10-08
申请号：US206517
申请日：1994-03-04
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.
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。
-
公开(公告)号：US4933491A
公开(公告)日：1990-06-12
申请号：US415634
申请日：1989-10-02
IPC分类号： C07C51/265 , C07C51/487
CPC分类号： C07C51/265 , C07C51/487
摘要： A method for purifying a naphthalene dicarboxylic acid produced by the liquid phase oxidation of a kialkylnaphthalene or partially oxidized derivative thereof in the presence of a catalyst comprising a bromine-containing component and at least one of a cobalt- or manganese-containing component.
摘要翻译： 在包含含溴组分和含钴或锰的组分中的至少一种的催化剂的存在下，纯化由二烷基萘或其部分氧化的衍生物进行液相氧化制备的萘二甲酸的方法。
-
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.
-
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。
-
-
-
搜索结果
4 条记录 (耗时 0.013 秒)
