ES2142006T3 - Proceso para la produccion de acido tereftalico. - Google Patents
Proceso para la produccion de acido tereftalico.Info
- Publication number
- ES2142006T3 ES2142006T3 ES96115916T ES96115916T ES2142006T3 ES 2142006 T3 ES2142006 T3 ES 2142006T3 ES 96115916 T ES96115916 T ES 96115916T ES 96115916 T ES96115916 T ES 96115916T ES 2142006 T3 ES2142006 T3 ES 2142006T3
- Authority
- ES
- Spain
- Prior art keywords
- acid
- area
- acetic acid
- thereftalic
- deposit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/14—Monocyclic dicarboxylic acids
- C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
- C07C63/26—1,4 - Benzenedicarboxylic acid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
UNA SUSPENSION ACUOSA ESPESA DE ACIDO TEREFTALICO EN ACIDO ACETICO QUE SE PRODUCE MEDIANTE LA OXIDACION DE P-XILENO EN ACIDO ACETICO, ELIMINADO AGUA MEDIANTE LA EVAPORACION DE UNA CORRIENTE DE AGUA Y ACIDO ACETICO Y DEVOLVIENDO ACIDO ACETICO A LA FASE DE OXIDACION. EL ACIDO TEREFTALICO SE SEPARA DEL MEDIO DE REACCION EN UNA PRIMERA ZONA PARA DEJAR UN DEPOSITO EN UNA BANDA, EL DEPOSITO SE LAVA CON UN PRIMER MEDIO ACUOSO EN UNA SEGUNDA ZONA, SE ELIMINA DE LA BANDA EN UNA TERCERA ZONA Y SE MEZCLA CON UN SEGUNDO MEDIO ACUOSO. EL MEDIO DE REACCION SE PASA DESDE LA PRIMERA ZONA A LA FASE DE OXIDACION Y SE RECUPERA ACIDO TEREFTALICO, PREFERENTEMENTE TRAS UNA NUEVA PURIFICACION.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919104776A GB9104776D0 (en) | 1991-03-07 | 1991-03-07 | Process for the production of terephthalic acid |
IDP97064092A ID19108A (id) | 1991-03-07 | 1992-06-08 | Proses produksi asam tereftalat (pecahan dari p-002451) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2142006T3 true ES2142006T3 (es) | 2000-04-01 |
Family
ID=32599058
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES96115916T Expired - Lifetime ES2142006T3 (es) | 1991-03-07 | 1992-02-02 | Proceso para la produccion de acido tereftalico. |
ES92301413T Expired - Lifetime ES2093189T3 (es) | 1991-03-07 | 1992-02-20 | Proceso para la produccion de acido tereftalico. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES92301413T Expired - Lifetime ES2093189T3 (es) | 1991-03-07 | 1992-02-20 | Proceso para la produccion de acido tereftalico. |
Country Status (15)
Country | Link |
---|---|
US (4) | US5527957A (es) |
EP (3) | EP0502628B1 (es) |
JP (1) | JPH0565246A (es) |
KR (1) | KR100225371B1 (es) |
CN (2) | CN1038409C (es) |
CA (1) | CA2062063C (es) |
DE (2) | DE69230569T2 (es) |
EG (1) | EG19876A (es) |
ES (2) | ES2142006T3 (es) |
GB (2) | GB9104776D0 (es) |
ID (1) | ID19108A (es) |
MX (1) | MX9200997A (es) |
RU (1) | RU2106337C1 (es) |
SG (1) | SG66231A1 (es) |
ZA (1) | ZA921380B (es) |
Families Citing this family (103)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9310070D0 (en) * | 1992-05-29 | 1993-06-30 | Ici Plc | Process for the production of purified terephthalic acid |
GB9400570D0 (en) * | 1994-01-13 | 1994-03-09 | Ici Plc | Handling of materials at elevated pressure |
TW299318B (es) * | 1994-11-15 | 1997-03-01 | Mitsubishi Chem Corp | |
JP3877770B2 (ja) * | 1995-06-05 | 2007-02-07 | インヴィスタ テクノロジー エスアエルエル | 流出ガスの処理 |
US5961942A (en) * | 1995-06-05 | 1999-10-05 | E. I. Du Pont De Nemours And Company | Effluent gas treatment |
US5929274A (en) | 1995-06-07 | 1999-07-27 | Hfm International, Inc. | Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid |
US6054610A (en) | 1995-06-07 | 2000-04-25 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid and isophthalic acid from mixed xylenes |
US6013835A (en) | 1995-06-07 | 2000-01-11 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
US5767311A (en) | 1995-06-07 | 1998-06-16 | Glitsch International, Inc. | Method and apparatus for preparing purified terephtalic acid |
TW442461B (en) * | 1996-02-22 | 2001-06-23 | Du Pont | Process for the production of an aromatic carboxylic acid |
BR9707639A (pt) * | 1996-02-22 | 1999-07-27 | Du Pont | Processo para a produção de um ácido carboxílico aromático |
GB9705349D0 (en) | 1997-03-14 | 1997-04-30 | Ici Plc | Treatment of effluent streams |
AU729150B2 (en) * | 1997-12-12 | 2001-01-25 | Mitsubishi Heavy Industries, Ltd. | Rolling system and rolling method |
CA2315151A1 (en) * | 1997-12-15 | 1999-06-24 | Shell Internationale Research Maatschappij B.V. | Method to produce aromatic carboxylic acids |
TW483886B (en) * | 1998-08-11 | 2002-04-21 | Du Pont | Method for recovering methyl acetate and residual acetic acid in the production of pure terephtalic acid |
IT1311976B1 (it) | 1999-03-25 | 2002-03-22 | Franco Codignola | Procedimento per la produzione di acidi aromatici. |
IT1319169B1 (it) | 2000-07-14 | 2003-09-26 | Eurotecnica Dev & Licensing Sr | Procedimento per la purificazione di acidi carbossilici aromatici. |
US6765113B2 (en) | 2000-07-19 | 2004-07-20 | E.I. Du Pont De Nemours And Company | Production of aromatic carboxylic acids |
US6420589B1 (en) | 2000-12-14 | 2002-07-16 | General Electric Company | Process for the production of diaryl carbonates |
US6521777B2 (en) | 2000-12-14 | 2003-02-18 | General Electric Company | Process for the production of diaryl carbonates |
US6384262B1 (en) | 2000-12-14 | 2002-05-07 | General Electric Company | Process for the production of diaryl carbonates |
ES2295644T3 (es) * | 2002-07-09 | 2008-04-16 | Invista Technologies S.A.R.L. | Procedimiento para producir acidos dicarboxilicos aromaticos en condiciones supercriticas. |
US7276625B2 (en) * | 2002-10-15 | 2007-10-02 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
US7132566B2 (en) * | 2003-09-22 | 2006-11-07 | Eastman Chemical Company | Process for the purification of a crude carboxylic acid slurry |
US7074954B2 (en) * | 2002-12-09 | 2006-07-11 | Eastman Chemical Company | Process for the oxidative purification of terephthalic acid |
AU2003293251A1 (en) * | 2002-12-09 | 2004-06-30 | Eastman Chemical Company | Process for the oxidative purification of terephthalic acid |
US7161027B2 (en) | 2002-12-09 | 2007-01-09 | Eastman Chemical Company | Process for the oxidative purification of terephthalic acid |
KR100498490B1 (ko) * | 2003-02-28 | 2005-07-01 | 삼성전자주식회사 | 인페이스 신호와 쿼드러쳐 신호 간의 위상차를 가변시킬수 있는 쿼드러쳐 전압제어 발진기 |
US7193109B2 (en) * | 2003-03-06 | 2007-03-20 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
US20050059709A1 (en) * | 2003-09-15 | 2005-03-17 | Meythaler Jay M. | Treatment of a neuropathy with rapid release aminopyridine |
US7214760B2 (en) * | 2004-01-15 | 2007-05-08 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
US7546747B2 (en) * | 2004-01-15 | 2009-06-16 | Eastman Chemical Company | Process for production of a dried carboxylic acid cake suitable for use in polyester production |
US20050283022A1 (en) * | 2004-06-18 | 2005-12-22 | Sheppard Ronald B | Filtrate preparation process for terephthalic acid filtrate treatment |
US7504535B2 (en) * | 2004-09-02 | 2009-03-17 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7572932B2 (en) * | 2004-09-02 | 2009-08-11 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7683210B2 (en) | 2004-09-02 | 2010-03-23 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7589231B2 (en) * | 2004-09-02 | 2009-09-15 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7371894B2 (en) * | 2004-09-02 | 2008-05-13 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7608732B2 (en) * | 2005-03-08 | 2009-10-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7495125B2 (en) * | 2004-09-02 | 2009-02-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7692037B2 (en) * | 2004-09-02 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7586000B2 (en) * | 2004-09-02 | 2009-09-08 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7741515B2 (en) | 2004-09-02 | 2010-06-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7608733B2 (en) * | 2004-09-02 | 2009-10-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7582793B2 (en) | 2004-09-02 | 2009-09-01 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7507857B2 (en) * | 2004-09-02 | 2009-03-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7482482B2 (en) * | 2004-09-02 | 2009-01-27 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7692036B2 (en) | 2004-11-29 | 2010-04-06 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US20060047153A1 (en) * | 2004-09-02 | 2006-03-02 | Wonders Alan G | Optimized liquid-phase oxidation |
US7381836B2 (en) * | 2004-09-02 | 2008-06-03 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7399882B2 (en) * | 2004-09-02 | 2008-07-15 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7572936B2 (en) * | 2004-09-02 | 2009-08-11 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7390921B2 (en) * | 2004-09-02 | 2008-06-24 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7361784B2 (en) * | 2004-09-02 | 2008-04-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7568361B2 (en) * | 2004-09-02 | 2009-08-04 | Eastman Chemical Company | Optimized liquid-phase oxidation |
US7910769B2 (en) | 2004-09-02 | 2011-03-22 | Eastman Chemical Company | Optimized liquid-phase oxidation |
CN101146758B (zh) * | 2005-03-21 | 2012-07-04 | Bp北美公司 | 用于制备包括其纯形式的芳族羧酸的方法和设备 |
US7884231B2 (en) | 2005-05-19 | 2011-02-08 | Eastman Chemical Company | Process to produce an enriched composition |
US7304178B2 (en) | 2005-05-19 | 2007-12-04 | Eastman Chemical Company | Enriched isophthalic acid composition |
US20060264664A1 (en) * | 2005-05-19 | 2006-11-23 | Parker Kenny R | Esterification of an exchange solvent enriched composition |
US7919652B2 (en) | 2005-05-19 | 2011-04-05 | Eastman Chemical Company | Process to produce an enriched composition through the use of a catalyst removal zone and an enrichment zone |
US20060264662A1 (en) * | 2005-05-19 | 2006-11-23 | Gibson Philip E | Esterification of an enriched composition |
US7741516B2 (en) | 2005-05-19 | 2010-06-22 | Eastman Chemical Company | Process to enrich a carboxylic acid composition |
US20060264656A1 (en) * | 2005-05-19 | 2006-11-23 | Fujitsu Limited | Enrichment process using compounds useful in a polyester process |
US7897809B2 (en) | 2005-05-19 | 2011-03-01 | Eastman Chemical Company | Process to produce an enrichment feed |
US7432395B2 (en) | 2005-05-19 | 2008-10-07 | Eastman Chemical Company | Enriched carboxylic acid composition |
US7557243B2 (en) | 2005-05-19 | 2009-07-07 | Eastman Chemical Company | Enriched terephthalic acid composition |
US7880031B2 (en) | 2005-05-19 | 2011-02-01 | Eastman Chemical Company | Process to produce an enrichment feed |
US7834208B2 (en) | 2005-05-19 | 2010-11-16 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
KR100708919B1 (ko) * | 2005-05-30 | 2007-04-17 | 삼성석유화학(주) | 테레프탈산의 회수 방법 |
US7884232B2 (en) * | 2005-06-16 | 2011-02-08 | Eastman Chemical Company | Optimized liquid-phase oxidation |
EP2292684A3 (en) | 2005-12-29 | 2011-04-20 | BP Corporation North America Inc. | Ethanolysis of pet to form det and oxidation thereof |
US7355068B2 (en) * | 2006-01-04 | 2008-04-08 | Eastman Chemical Company | Oxidation system with internal secondary reactor |
US7358389B2 (en) * | 2006-01-04 | 2008-04-15 | Eastman Chemical Company | Oxidation system employing internal structure for enhanced hydrodynamics |
US20070179312A1 (en) * | 2006-02-02 | 2007-08-02 | O'meadhra Ruairi Seosamh | Process for the purification of a crude carboxylic axid slurry |
US7863483B2 (en) * | 2006-03-01 | 2011-01-04 | Eastman Chemical Company | Carboxylic acid production process |
US7888529B2 (en) | 2006-03-01 | 2011-02-15 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
US20070208199A1 (en) * | 2006-03-01 | 2007-09-06 | Kenny Randolph Parker | Methods and apparatus for isolating carboxylic acid |
US7847121B2 (en) * | 2006-03-01 | 2010-12-07 | Eastman Chemical Company | Carboxylic acid production process |
US8697906B2 (en) * | 2006-03-01 | 2014-04-15 | Grupo Petrotemex, S.A. De C.V. | Methods and apparatus for producing a low-moisture carboxylic acid wet cake |
US7462736B2 (en) * | 2006-03-01 | 2008-12-09 | Eastman Chemical Company | Methods and apparatus for isolating carboxylic acid |
US8173835B2 (en) * | 2006-03-01 | 2012-05-08 | Grupo Petrotemex, S.A. De C.V. | Method and apparatus for drying carboxylic acid |
CN100368370C (zh) * | 2006-03-29 | 2008-02-13 | 中国石化仪征化纤股份有限公司 | 对二甲苯氧化母液中悬浮物的回收系统装置 |
US8115029B2 (en) | 2006-11-02 | 2012-02-14 | University Of Kansas | Cobalt-catalyzed oxidations in volumetrically expanded liquids by compressed gases |
RU2463096C2 (ru) * | 2007-12-20 | 2012-10-10 | Хитачи Плант Текнолоджиз, Лтд. | Способ фильтрации кристаллической суспензии |
US8455680B2 (en) | 2008-01-15 | 2013-06-04 | Eastman Chemical Company | Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
US8614350B2 (en) | 2008-01-15 | 2013-12-24 | Eastman Chemical Company | Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
CN101417943B (zh) * | 2008-12-08 | 2010-11-10 | 中国纺织工业设计院 | 高效回收利用pta装置精制母液的简易方法和系统 |
BR112012027495A2 (pt) * | 2010-04-30 | 2016-07-19 | Antonio Perez | escorredor local |
CN101914013B (zh) * | 2010-07-30 | 2015-03-18 | 浙江大学 | 一种节水的对苯二甲酸生产方法 |
US8466312B2 (en) * | 2010-08-20 | 2013-06-18 | Grupo Petrotemex, S.A. De C.V. | Terephthalic acid purge filtration rate by controlling % water in filter feed slurry |
US9096552B2 (en) * | 2011-03-28 | 2015-08-04 | Dsm Ip Assets B.V. | Process for the preparation of condensation products of melamine |
US20140175025A1 (en) * | 2012-12-21 | 2014-06-26 | Eastman Chemical Company | Generation of low-solids second mother liquor from terephthalic acid production filter |
CN104338499B (zh) * | 2013-07-31 | 2016-01-20 | 沅江华龙催化科技有限公司 | 一种液固多相反应分离同步反应器 |
CN104338500B (zh) * | 2013-07-31 | 2015-12-02 | 沅江华龙催化科技有限公司 | 一种气液固多相反应分离同步反应器 |
RU2687489C1 (ru) * | 2013-12-18 | 2019-05-14 | Бипи Корпорейшен Норт Америка Инк. | Улучшенный способ и устройство для производства ароматических карбоновых кислот |
CA2934789C (en) | 2013-12-30 | 2021-03-02 | Thomas M. Bartos | Pressurized crude aromatic carboxylic acid feed mixes |
CN103772182B (zh) * | 2014-01-26 | 2015-06-17 | 沅江华龙催化科技有限公司 | 基于气液固多相反应分离同步反应器的利用空气氧化对二甲苯生产对苯二甲酸的方法 |
JP2015140342A (ja) * | 2014-01-30 | 2015-08-03 | 株式会社日立製作所 | 精製テレフタル酸の製造方法 |
CN103936581A (zh) | 2014-04-24 | 2014-07-23 | 天华化工机械及自动化研究设计院有限公司 | 一种提高cta溶剂交换效率的方法 |
CN105085231A (zh) | 2014-05-20 | 2015-11-25 | 天华化工机械及自动化研究设计院有限公司 | 一种pta工业装置氧化单元中醋酸溶剂的处理方法 |
CN115867683A (zh) | 2020-08-14 | 2023-03-28 | 科氏技术英国有限公司 | 从氧化剂清洗流中回收金属催化剂 |
WO2023021347A1 (en) | 2021-08-20 | 2023-02-23 | Koch Technology Solutions UK Limited | Nickel and cobalt separation in a pta process |
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DE926605C (de) * | 1953-07-22 | 1955-04-21 | Heinz Dipl-Volksw Hoening | Waschband fuer Drehfilter |
GB970492A (en) * | 1960-10-18 | 1964-09-23 | Standard Oil Co | Production of aromatic carboxylic acids |
GB926605A (en) * | 1961-03-24 | 1963-05-22 | Atomic Energy Authority Uk | Improvements in or relating to fire-detection apparatus |
NL6606774A (es) * | 1965-05-17 | 1966-11-18 | ||
GB1152575A (en) * | 1965-05-17 | 1969-05-21 | Standard Oil Co | Purification of Aromatic Polycarboxylic Acids. |
NL7210541A (es) * | 1972-08-01 | 1974-02-05 | ||
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US4782181A (en) * | 1987-06-04 | 1988-11-01 | Amoco Corporation | Process for removal of high molecular weight impurities in the manufacture of purified terephthalic acid |
JP2545103B2 (ja) * | 1987-12-17 | 1996-10-16 | 三井石油化学工業株式会社 | テレフタル酸スラリ―の分散媒交換方法 |
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US4939297A (en) * | 1989-06-05 | 1990-07-03 | Eastman Kodak Company | Extraction process for removal of impurities from terephthalic acid filtrate |
GB9102393D0 (en) * | 1991-02-05 | 1991-03-20 | Ici Plc | Production of terephthalic acid |
US5175355A (en) * | 1991-04-12 | 1992-12-29 | Amoco Corporation | Improved process for recovery of purified terephthalic acid |
SG80548A1 (en) * | 1991-04-12 | 2001-05-22 | Amoco Corp | Process for preparation of terephthalic acid |
US5200557A (en) * | 1991-04-12 | 1993-04-06 | Amoco Corporation | Process for preparation of crude terephthalic acid suitable for reduction to prepare purified terephthalic acid |
-
1991
- 1991-03-07 GB GB919104776A patent/GB9104776D0/en active Pending
-
1992
- 1992-02-02 DE DE69230569T patent/DE69230569T2/de not_active Expired - Lifetime
- 1992-02-02 ES ES96115916T patent/ES2142006T3/es not_active Expired - Lifetime
- 1992-02-20 DE DE69214859T patent/DE69214859T2/de not_active Expired - Lifetime
- 1992-02-20 ES ES92301413T patent/ES2093189T3/es not_active Expired - Lifetime
- 1992-02-20 EP EP92301413A patent/EP0502628B1/en not_active Expired - Lifetime
- 1992-02-20 EP EP96105413A patent/EP0722927A1/en not_active Withdrawn
- 1992-02-20 EP EP96115916A patent/EP0754673B1/en not_active Expired - Lifetime
- 1992-02-20 SG SG1996002186A patent/SG66231A1/en unknown
- 1992-02-20 GB GB929203674A patent/GB9203674D0/en active Pending
- 1992-02-25 ZA ZA921380A patent/ZA921380B/xx unknown
- 1992-02-28 CA CA002062063A patent/CA2062063C/en not_active Expired - Fee Related
- 1992-03-04 EG EG290192A patent/EG19876A/xx active
- 1992-03-05 JP JP4048527A patent/JPH0565246A/ja active Pending
- 1992-03-06 MX MX9200997A patent/MX9200997A/es not_active IP Right Cessation
- 1992-03-06 RU SU5011176A patent/RU2106337C1/ru active
- 1992-03-06 KR KR1019920003690A patent/KR100225371B1/ko not_active IP Right Cessation
- 1992-03-07 CN CN92101553A patent/CN1038409C/zh not_active Expired - Fee Related
- 1992-06-08 ID IDP97064092A patent/ID19108A/id unknown
-
1995
- 1995-06-06 US US08/470,965 patent/US5527957A/en not_active Expired - Lifetime
- 1995-06-06 US US08/470,955 patent/US5563293A/en not_active Expired - Lifetime
-
1996
- 1996-07-17 US US08/682,424 patent/US5679846A/en not_active Expired - Lifetime
- 1996-08-15 CN CN96109974A patent/CN1067977C/zh not_active Expired - Fee Related
-
1997
- 1997-05-22 US US08/861,595 patent/US5877346A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0754673B1 (en) | 2000-01-12 |
CN1038409C (zh) | 1998-05-20 |
US5527957A (en) | 1996-06-18 |
CN1150945A (zh) | 1997-06-04 |
CN1067977C (zh) | 2001-07-04 |
GB9104776D0 (en) | 1991-04-17 |
CN1064676A (zh) | 1992-09-23 |
EP0502628A3 (en) | 1993-01-27 |
RU2106337C1 (ru) | 1998-03-10 |
ES2093189T3 (es) | 1996-12-16 |
EP0502628B1 (en) | 1996-10-30 |
ID19108A (id) | 1998-06-18 |
DE69230569D1 (de) | 2000-02-17 |
DE69230569T2 (de) | 2000-07-27 |
SG66231A1 (en) | 1999-10-19 |
US5563293A (en) | 1996-10-08 |
CA2062063A1 (en) | 1992-09-08 |
EP0722927A1 (en) | 1996-07-24 |
GB9203674D0 (en) | 1992-04-08 |
CA2062063C (en) | 2002-07-09 |
DE69214859T2 (de) | 1997-02-27 |
DE69214859D1 (de) | 1996-12-05 |
ZA921380B (en) | 1993-08-25 |
US5679846A (en) | 1997-10-21 |
JPH0565246A (ja) | 1993-03-19 |
KR100225371B1 (ko) | 1999-10-15 |
MX9200997A (es) | 1992-10-01 |
KR920018005A (ko) | 1992-10-21 |
EP0502628A2 (en) | 1992-09-09 |
EG19876A (en) | 1996-06-30 |
US5877346A (en) | 1999-03-02 |
EP0754673A1 (en) | 1997-01-22 |
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