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61. 发明授权

US6143926A Process for producing pure terephthalic acid with improved recovery of precursors, solvent and methyl acetate 失效
标题翻译：用于生产纯对苯二甲酸的方法，其具有改进的前体，溶剂和乙酸甲酯的回收率
公开(公告)号：US6143926A
公开(公告)日：2000-11-07
申请号：US400035
申请日：1999-09-21
申请人： William David Parten
发明人： William David Parten
IPC分类号： C07C51/265 , C07C51/43 , C07C51/487 , C07C63/26 , C07C51/16
CPC分类号： C07C51/43 , C07C51/265 , C07C51/487
摘要： Process for producing pure terephthalic acid having improved means for recovering and/or recycling terephthalic acid precursors, residual acetic acid and other reaction by-products, such as methyl acetate.
摘要翻译：用于生产纯对苯二甲酸的方法，其具有用于回收和/或再循环对苯二甲酸前体，残余乙酸和其它反应副产物如乙酸甲酯的方法。

62. 发明授权

US6031128A Process for manufacturing terephthalic acid 失效
标题翻译：对苯二甲酸制造方法
公开(公告)号：US6031128A
公开(公告)日：2000-02-29
申请号：US101008
申请日：1998-06-29
申请人： Hang-Duk Roh , Dongmok Bae
发明人： Hang-Duk Roh , Dongmok Bae
IPC分类号： C08J11/16 , C07C27/02 , C07C51/09 , C07C51/42 , C07C63/26 , B09B5/00
CPC分类号： C07C51/09
摘要： This invention relates to a process for manufacturing terephthalic acid and more particularly, to a process of manufacturing and recovering the highly purified terephthalic acid using an alkali weight-reduction waste water discharged from weight-reduction process in a polyester textile dyeing complex, in accordance with the practice of this invention comprising the following procedures: polyethylene terephthalate (hereinafter referred to "PET") waste scrap materials are hydrolyzed to prepare the slurry of disodium terephthalate. Then, said slurry dissolved in water is adsorbed to remove impurities, and followed by acid-neutralization to obtain terephthalic acid of this invention.
摘要翻译： PCT No.PCT / KR95 / 00187第 371日期1998年6月29日第 102（e）日期1998年6月29日PCT 1995年12月30日PCT PCT。公开号WO97 / 24312 PCT 日本特征1997年7月10日本发明涉及对苯二甲酸的制造方法，更具体地说，涉及使用在聚酯纺织品染色中从重量减少法中排出的碱减重废水制造和回收高纯度对苯二甲酸的方法复合物，根据本发明的实践包括以下步骤：将聚对苯二甲酸乙二醇酯（以下称为“PET”）废废料水解以制备对苯二甲酸二钠的浆料。然后，将溶解在水中的浆料吸附除去杂质，然后进行酸中和，得到本发明的对苯二甲酸。

63. 发明授权

US5980696A Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid 失效
标题翻译：在生产芳香酸时通过共沸蒸馏脱乙酸
公开(公告)号：US5980696A
公开(公告)日：1999-11-09
申请号：US776979
申请日：1997-02-05
申请人： William David Parten , Alan Macpherson Ure
发明人： William David Parten , Alan Macpherson Ure
IPC分类号： C07C51/265 , C07C51/46 , C07C63/14 , C07C63/26 , B01D3/36 , B01D3/42
CPC分类号： C07C51/265 , C07C51/46 , Y10S159/19 , Y10S203/20
摘要： An improved process for preparing an aromatic dicarboxylic acid wherein the improvement resides in dehydrating and recovering solvent from a feed stream having from 20% to 40% by weight water via azeotropic distillation with organic phase reflux using an entrainer selected from isobutyl acetate, n-propyl acetate or an entrainer with a boiling point between isobutyl acetate and n-propyl acetate.
摘要翻译： PCT No.PCT / GB95 / 01933 Sec。 371日期1997年2月5日 102（e）日期1997年2月5日PCT提交1995年8月16日PCT公布。公开号WO96 / 06065 日本1996年2月29日改进的制备芳族二羧酸的方法，其中改进在于通过共沸蒸馏有机相回流，从具有20％至40％重量的水的进料流中脱水和回收溶剂，使用夹带剂，其选自异丁基醋酸乙酯，乙酸正丙酯或乙酸异丁酯与乙酸正丙酯之间的沸点的夹带剂。

64. 再颁专利

USRE36008E Process for the production of terephthalic acid 失效
标题翻译：生产对苯二甲酸的工艺
公开(公告)号：USRE36008E
公开(公告)日：1998-12-22
申请号：US634991
申请日：1996-04-19
申请人： Eric Hindmarsh , John Arthur Turner , David Parker
发明人： Eric Hindmarsh , John Arthur Turner , David Parker
IPC分类号： B01J23/42 , B01J23/44 , C07B61/00 , C07C51/265 , C07C51/43 , C07C51/44 , C07C51/487 , C07C63/26 , C07C51/215
CPC分类号： C07C51/44 , C07C51/265 , C07C51/487 , Y02P20/52
摘要： Terephthalic acid is produced by oxidation of para xylene, purified in an aqueous phase and recovered by precipitating a purified product from the aqueous phase, the aqueous phase mother liquor is then cooled or evaporated to produce a further less pure precipitate and a second mother liquor and the less pure precipitate is returned to the reaction medium and/or the water of the second mother liquor is used to dissolve the crude solid and/or the second mother liquor is treated to recover water which is used to wash the precipitate recovered from the aqueous solution. The process produces better yields of terephthalic acid, reduces the use of water and reduces problems in the disposal of polluted waste water.
摘要翻译：对苯二甲酸是通过对对二甲苯的氧化产生的，在水相中纯化并通过从水相中沉淀纯化产物回收，然后将水相母液冷却或蒸发以产生另外较不纯的沉淀物和第二母液，将较不纯的沉淀物返回到反应介质中和/或第二母液的水用于溶解粗固体，和/或处理第二母液以回收用于洗涤从水溶液中回收的沉淀物的水解。该方法产生较好的对苯二甲酸产率，减少了水的使用，并减少了处理污水废水的问题。

65. 发明授权

US5741943A Hydroformylation processes employing indicator ligands 失效
标题翻译：使用指示剂配体的加氢甲酰化方法
公开(公告)号：US5741943A
公开(公告)日：1998-04-21
申请号：US756500
申请日：1996-11-26
申请人： David Robert Bryant , Tak Wai Leung
发明人： David Robert Bryant , Tak Wai Leung
IPC分类号： C07B61/00 , B01J19/18 , B01J27/18 , B01J31/02 , B01J31/18 , B01J31/22 , B01J31/40 , B01J38/74 , C07C45/49 , C07C45/50 , C07C47/02 , C07C51/00 , C07C51/255 , C07C51/265 , C07C51/42 , C07C51/43 , C07C63/00 , C07C63/15 , C07C63/26 , C07F9/02 , C07F9/141 , C07F9/145 , C07F9/50 , C07F9/6571 , C07F9/6574 , C07F15/00 , F04D25/08 , F04D29/28
CPC分类号： C07F9/65746 , B01J19/18 , B01J31/0237 , B01J31/0259 , B01J31/0267 , B01J31/1805 , B01J31/185 , B01J31/4023 , B01J31/4046 , B01J31/4053 , B01J31/4061 , B01J38/74 , C07C45/49 , C07C45/50 , C07C45/505 , C07F9/025 , C07F9/145 , B01J2219/00083 , B01J2219/00103 , B01J2231/32 , B01J2231/321 , B01J2231/52 , B01J2531/822 , B01J2531/96 , B01J31/20 , Y02P20/582 , Y02P20/584
摘要： This invention relates to a hydroformylation process which comprises reacting one or more olefinic unsaturated compounds with carbon monoxide and hydrogen in the presence of a metal-organopolyphosphite ligand complex catalyst and optionally free organopolyphosphite ligand, and an amount of a sterically hindered organophosphorus ligand different from the organopolyphosphite ligand of said metal-organopolyphosphite ligand complex catalyst, to produce one or more aldehydes. The sterically hindered organophosphorus ligands are useful as indicators of organopolyphosphite ligand depletion in said hydroformylation process.
摘要翻译：本发明涉及加氢甲酰化方法，其包括在金属 - 有机多亚磷酸酯配位体配位体催化剂和任选的游离有机多亚磷酸酯配体存在下使一种或多种烯属不饱和化合物与一氧化碳和氢反应，和一定量的空间位阻有机磷配体不同于所述金属 - 有机多亚磷酸酯配体配合物催化剂的有机多亚磷酸酯配体，以产生一种或多种醛。空间位阻有机磷配体可用作所述加氢甲酰化方法中有机多亚磷酸酯配体消耗的指标。

66. 发明授权

US5723656A Process for preparing aromatic carboxylic acids with efficient energy recovery 失效
标题翻译：用有效能量回收制备芳香族羧酸的方法
公开(公告)号：US5723656A
公开(公告)日：1998-03-03
申请号：US603888
申请日：1996-02-22
申请人： Kenneth J. Abrams
发明人： Kenneth J. Abrams
IPC分类号： C07C51/265 , C07C63/26 , C07C51/16
CPC分类号： C07C51/265 , Y02P20/123 , Y02P20/131 , Y02P20/51 , Y10S203/06 , Y10S203/17 , Y10S203/21
摘要： A process for preparing aromatic carboxylic acids by the exothermic liquid-phase oxidation reaction of an aromatic feedstock compound, wherein energy is efficiently recovered from the exothermic oxidation reaction.
摘要翻译：通过芳族原料化合物的放热液相氧化反应制备芳族羧酸的方法，其中能量从放热氧化反应有效地回收。

67. 发明授权

US5705682A Process for producing highly pure terephthalic acid 失效
标题翻译：高纯度对苯二甲酸生产方法
公开(公告)号：US5705682A
公开(公告)日：1998-01-06
申请号：US706890
申请日：1996-09-03
申请人： Fumio Ohkoshi , Masato Inary , Fumiya Zaima
发明人： Fumio Ohkoshi , Masato Inary , Fumiya Zaima
IPC分类号： C07C51/265 , C07C51/42 , C07C51/43 , C07C51/46 , C07C51/48 , C07C51/487 , C07C63/26 , C07C51/16
CPC分类号： C07C51/42 , C07C51/48
摘要： A process for producing highly pure terephthalic acid comprising: (a) oxidizing a p-phenylene compound in the liquid phase in the presence of acetic acid, to produce a liquid-phase oxidation product, (b) separating the liquid-phase oxidation product into the following: (i) a first mother liquid containing acetic acid and (ii) a crude terephthalic acid, (c) evaporating, in whole or in part, the first mother liquid, to produce a vapor, (d) feeding the vapor, or a condensate thereof, to an intermediate stage of a distillation tower, carrying out an azeotropic distillation and withdrawing through a bottom of the distillation tower a concentrated acetic acid, (e) subjecting the crude terephthalic acid to a refining treatment, which is a catalytic hydrotreatment, a catalytic treatment or a recrystallization, which is carried out in the presence of is water, (f) cooling and crystallizing the resultant liquid from step (e), to produce a pure terephthalic acid and a second mother liquor, (g) subjecting the second mother liquor to an extraction in the presence of an azeotrope-forming agent to extract aromatic carboxylic acids contained in second mother liquor, to produce a liquid extract, and (h) recycling the liquid extract to the distillation tower in step (d). The process can greatly reduce the effluent water treatment load and enhance the yield of the objective terephthalic acid, in addition to providing recycling of useful reactants.
摘要翻译：一种制备高纯度对苯二甲酸的方法，包括：（a）在乙酸存在下，在液相中氧化对亚苯基化合物，以产生液相氧化产物，（b）将液相氧化产物分离成以下：（i）含有乙酸的第一母液和（ii）粗对苯二甲酸，（c）全部或部分地蒸发第一母液，产生蒸气，（d）将蒸气，或蒸馏塔的冷凝物，进入蒸馏塔的中间阶段，进行共沸蒸馏并通过蒸馏塔的底部抽出浓缩的乙酸，（e）使粗对苯二甲酸进行精炼处理，其是催化剂在水存在下进行加氢处理，催化处理或重结晶，（f）冷却并使来自步骤（e）的所得液体结晶，以产生纯对苯二甲酸和第二母液，（g）苏在共沸物形成剂的存在下将第二母液喷射到萃取物中，以提取第二母液中所含的芳族羧酸，以产生液体提取物，和（h）在步骤（d）中将液体萃取物再循环到蒸馏塔）。除了提供有用的反应物的回收之外，该方法可以大大降低流出水处理负荷并提高目标对苯二甲酸的产率。

68. 发明授权

US5698734A Process for the production of purified terephthalic acid 失效
标题翻译：制备纯对苯二甲酸的方法
公开(公告)号：US5698734A
公开(公告)日：1997-12-16
申请号：US668756
申请日：1996-06-24
申请人： John Arthur Turner , Eric Hindmarsh , David Parker , Ian Peter Milne
发明人： John Arthur Turner , Eric Hindmarsh , David Parker , Ian Peter Milne
IPC分类号： C07C51/43 , C07C63/26
CPC分类号： C07C51/43
摘要： Purified terephthalic acid is prepared by a process of subjecting an aqueous solution of crude terephthalic acid to hydrogenation to reduce impurities, crystallizing this solution to produce a slurry of purified terephthalic acid in an aqueous liquor, and carrying out an integrated separation washing process using a centrifuge having washing facilities.
摘要翻译：纯化的对苯二甲酸通过使粗对苯二甲酸的水溶液进行氢化以减少杂质，使该溶液结晶以在含水液体中产生纯化的对苯二甲酸的浆液并使用离心机进行一体化分离洗涤方法的方法来制备有洗衣设施。

69. 发明授权

US5693856A Production of terephthalic acid 失效
标题翻译：生产对苯二甲酸
公开(公告)号：US5693856A
公开(公告)日：1997-12-02
申请号：US587174
申请日：1996-01-16
申请人： Ramakrishnan Ramachandran , Rustam H. Sethna , Satish S. Tamhankar
发明人： Ramakrishnan Ramachandran , Rustam H. Sethna , Satish S. Tamhankar
IPC分类号： B01J27/128 , B01J19/18 , C07C51/265 , C07C63/15 , C07C63/26 , C07C51/16
CPC分类号： C07C51/265 , B01J19/18 , B01J2219/185 , Y02P20/52
摘要： Terephthalic acid is produced by reacting paraxylene with oxygen in a reactor having several vertical stages, the reaction taking place in the liquid phase using acetic acid as solvent and a cobalt-manganese-bromine complex catalyst. During the reaction, a carbon dioxide-containing gas phase is withdrawn from the vapor space of the reactor. The gas phase is cooled to condense vaporized acetic acid therefrom and carbon dioxide is separated from the gas phase and recycled to the vapor space or to the liquid phase or to both of these. In an alternate embodiment, the gas remaining after condensing acetic acid is subjected to catalytic oxidation to oxidize carbon monoxide and methane, if present, to carbon dioxide, and some or all of the carbon dioxide is recycled to the reactor.
摘要翻译：对苯二甲酸是通过在具有几个垂直级的反应器中使对二甲苯与氧反应制备的，反应在液相中使用乙酸作为溶剂和钴 - 锰 - 溴络合物催化剂进行。在反应过程中，含有二氧化碳的气相从反应器的蒸汽空间排出。将气相冷却以冷凝蒸发的乙酸，并将二氧化碳与气相分离并再循环至蒸气空间或液相或两者。在另一个实施方案中，将乙酸缩合后剩余的气体进行催化氧化，以将一氧化碳和甲烷（如果存在）氧化成二氧化碳，并且将一些或全部二氧化碳再循环到反应器中。

70. 发明授权

US5679848A Process for the preparation of terephthalic acid and its isomers 失效
标题翻译：制备对苯二甲酸及其异构体的方法
公开(公告)号：US5679848A
公开(公告)日：1997-10-21
申请号：US588311
申请日：1996-01-18
申请人： Hermann-Josef Korte , Anton Schoengen , Christoph Schwarz , Thomas Jostmann
发明人： Hermann-Josef Korte , Anton Schoengen , Christoph Schwarz , Thomas Jostmann
IPC分类号： C07C63/26 , C07C51/09
CPC分类号： C07C51/09
摘要： A process for the preparation of terephthalic acid (TA) from pure dimethyl terephthalate (DMT) and/or DMT intermediate product by hydrolysis in a countercurrent reactor at a conversion of greater than 99% and crystallization to give the solid product, characterized in that the sum of the stripping steam (S) and reaction water (W) satisfies the relationship L.ltoreq.S+W.ltoreq.2L, wherein (L) represents the amount of water necessary to keep the terephthalic acid (TA) produced largely in solution during the reaction and in the bottom of the reactor, and the terephthalic acid produced is crystallized in a crystallization which is free from washing stages.
摘要翻译：一种通过在逆流反应器中以大于99％的转化率通过水解从纯对苯二甲酸二甲酯（DMT）和/或DMT中间产物制备对苯二甲酸（TA）的方法，并且结晶得到固体产物，其特征在于，汽提蒸汽（S）和反应水（W）的总和满足关系L <= S + W

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