公开(公告)号：US06586609B2

公开(公告)日：2003-07-01

申请号：US09999494

申请日：2001-11-30

申请人： Roberto Ruggieri ,  Giovanni Ranghino ,  Gianni Carvoli ,  Agostino Tricella ,  Davino Gelosa ,  Massimo Morbidelli

发明人： Roberto Ruggieri ,  Giovanni Ranghino ,  Gianni Carvoli ,  Agostino Tricella ,  Davino Gelosa ,  Massimo Morbidelli

IPC分类号： C11B1300

CPC分类号： C07C67/08 ,  Y02P20/584 ,  C07C69/30

摘要： Process for the esterification of organic acids with alcohols in a reactor of the chromatographic type in which the heterogeneous solid phase is capable of acting both as an esterification catalyst and as a means exhibiting preferential adsorption towards one of the reaction products (typically water). The process to which the present invention relates is particularly improved compared with conventional technology owing to the use, as the means for regenerating the catalyst, of a desorbent to which has been added a second compound, generally the anhydride of the acid used in the esterification reaction, which, by chemical reaction, completes the removal of the adsorbed water.

公开(公告)号：US5936121A

公开(公告)日：1999-08-10

申请号：US620330

申请日：1996-03-22

申请人： Davino Gelosa ,  Roberto Ruggieri ,  Andrea Sliepcevich ,  Franco Codignola

发明人： Davino Gelosa ,  Roberto Ruggieri ,  Andrea Sliepcevich ,  Franco Codignola

IPC分类号： C11D3/33 ,  C02F5/12 ,  C07C231/12 ,  C07C237/22 ,  C07K2/00 ,  C08G69/10 ,  C08G73/10 ,  C09K3/00 ,  C11D3/37 ,  C07C229/00

CPC分类号： C08G73/1092 ,  C02F5/12 ,  C11D3/3719

摘要： An oligomer of an aspartic acid is provided having repeating monomeric units of aspartic acid of the formula: ##STR1## and by a first chain unit having formula: ##STR2## and a chain stopper unit A which is: ##STR3## wherein X is an alkali metal, R represents H or an alkyl containing from 1 to 4 carbon atoms and R.sub.1 is H or the group --COOX.

摘要翻译： 提供天冬氨酸的寡聚物，其具有下式的天冬氨酸的重复单体单元：和具有下式的第一链单元：和链终止单元A，其为：其中X为碱金属，R为H或烷基 含有1至4个碳原子，且R 1为H或-COOX基团。

公开(公告)号：US20080293964A1

公开(公告)日：2008-11-27

申请号：US12095926

申请日：2005-12-09

申请人： Milan Hronec ,  Hussain Al Ghatta ,  Roberto Ruggieri

发明人： Milan Hronec ,  Hussain Al Ghatta ,  Roberto Ruggieri

IPC分类号： C07C51/265

CPC分类号： C07C51/265 ,  C07C51/43 ,  C07C63/26

摘要： The present invention relates to a process for preparing high purity terephthalic acid by catalytic, liquid phase oxidation of p-xylene utilizing a partially homogeneous reaction in the presence of a very specific catalyst. The process produces a high purity terephthalic acid without the secondary purification step currently practiced.

摘要翻译： 本发明涉及通过在非常特定的催化剂存在下使用部分均相反应的对二甲苯的催化液相氧化来制备高纯对苯二甲酸的方法。 该方法产生高纯度对苯二甲酸，而没有目前实施的二级纯化步骤。

公开(公告)号：US5585502A

公开(公告)日：1996-12-17

申请号：US87854

申请日：1993-07-09

申请人： Roberto Ruggieri ,  Sergio Conni

发明人： Roberto Ruggieri ,  Sergio Conni

IPC分类号： C07C51/573 ,  C07D307/36

CPC分类号： C07C51/573

摘要： In the purification of maleic anhydride obtained with an oxidation process, by means of absorption with an organic solvent and fractionation of the resulting liquid phase and purification of the crude maleic anhydride thus separated, the above purification being accomplished through two serially placed fractionating columns, the accumulation of polymerisable acrylic acid overhead the first fractionating column of the purification section, and of water as well as of maleic acid overhead the second fractionating column of the purification section, is avoided by carrying the overhead vapours of said first fractionating column to an absorption tower, preferably operating with the same absorption organic solvent used to absorb the crude maleic anhydride from the reaction mixture, and by carrying the overhead vapours of said fractionating column of said purification section to two condensers placed in series, so that the gaseous fraction, coming out of the first condenser, is fed to said second condenser.

摘要翻译： 在用氧化法获得的马来酸酐的纯化中，通过用有机溶剂的吸收和所得液相的分级和纯化由此分离的粗马来酸酐，上述纯化通过两个连续放置的分馏塔完成， 通过将所述第一分馏塔的塔顶蒸气携带到吸收塔来避免纯化部分的第一分馏塔和纯化部分的第二分馏塔的水以及马来酸塔顶馏出物的可聚合丙烯酸塔顶的积聚 优选与用于从反应混合物中吸收粗马来酸酐的相同吸收有机溶剂操作，并将所述纯化部分的所述分馏塔的塔顶蒸气携带到串联放置的两个冷凝器中，使得气体馏分出来 的第一冷凝器，被供给到所述第二冷凝器 冷凝器。

公开(公告)号：US5688970A

公开(公告)日：1997-11-18

申请号：US395438

申请日：1995-02-28

申请人： Roberto Ruggieri ,  Salvatore Cassarino

发明人： Roberto Ruggieri ,  Salvatore Cassarino

IPC分类号： C07C51/215 ,  C07D307/60

CPC分类号： C07C51/215

摘要： In producing maleic anhydride by catalytic oxidation of butane in vapor phase, the reaction mixture consists of butane and a recycle gaseous current made of compressed air and exhaust gas recovered from the absorption stage by a solvent of the maleic anhydride produced; oxygen and total butane concentration in the recycle stream are controlled.

摘要翻译： 在通过汽相催化氧化丁烷来生产马来酸酐的过程中，反应混合物由丁烷和由压缩空气和废气回收的循环气流组成，由废气中的马来酸酐溶剂从吸收阶段回收; 控制循环流中的氧气和总丁烷浓度。

公开(公告)号：US5069687A

公开(公告)日：1991-12-03

申请号：US587080

申请日：1990-09-24

申请人： Aldo Bertola ,  Roberto Ruggieri

发明人： Aldo Bertola ,  Roberto Ruggieri

IPC分类号： C07C51/573

CPC分类号： C07C51/573

摘要： Process for the recovery of maleic anhydride from a gaseous mixture thereof, in which the gaseous mixture containing maleic anhydride is contacted with an absorbant for the maleic anhydride to give an enriched absorbant. Water present in the enriched absorbant is then substantially removed by contacting the enriched absorbant with a water adsorbant or with a low humidity stripping gas to produce a dried enriched absorbant. The maleic anhydride is then recovered from the dried enriched absorbant.