BR9911310A - Processo para reduzir 4-carboxibenzaldeìdo (4-cba) na produção de ácido tereftálico (tpa) ou 3-carboxibenzaldeìdo (3-cba) na produção de ácido isoftálico - Google Patents

Processo para reduzir 4-carboxibenzaldeìdo (4-cba) na produção de ácido tereftálico (tpa) ou 3-carboxibenzaldeìdo (3-cba) na produção de ácido isoftálico

Info

Publication number
BR9911310A
BR9911310A BR9911310-4A BR9911310A BR9911310A BR 9911310 A BR9911310 A BR 9911310A BR 9911310 A BR9911310 A BR 9911310A BR 9911310 A BR9911310 A BR 9911310A
Authority
BR
Brazil
Prior art keywords
cba
carboxybenzaldehyde
production
tpa
acid
Prior art date
Application number
BR9911310-4A
Other languages
English (en)
Inventor
Wiston Lamshing
Fu-Ming Lee
Randi Wright Wytcherley
Original Assignee
Hfm Int Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hfm Int Inc filed Critical Hfm Int Inc
Publication of BR9911310A publication Critical patent/BR9911310A/pt

Links

Classifications

    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

"PROCESSO PARA REDUZIR 4-CARBOXIBENZALDEIDO (4 CBA) NA PRODUçãO DE áCIDO TEREFTáLICO (TPA) OU 3-CARBOXIBENZALDEìDO (3-CBA) NA PRODUçãO DE áCIDO ISOFTáLICO" Um processo para reduzir isómeros de carboxibenzaldeído em ácidos tereftálico e/ou isoftálico é descrito. O TPA ou o IPA bruto são dissolvidos em N-metil pirrolidona e são subsequentemente contatados com um oxidante, tal como peróxido de hidrogênio substancialmente anidro para converter o isómero de carboxibenzaldeído (4-CBA ou 3-CBA) a TPA ou IPA sob condições moderadas de temperatura e pressão.
BR9911310-4A 1998-06-16 1999-05-18 Processo para reduzir 4-carboxibenzaldeìdo (4-cba) na produção de ácido tereftálico (tpa) ou 3-carboxibenzaldeìdo (3-cba) na produção de ácido isoftálico BR9911310A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/098,060 US5929274A (en) 1995-06-07 1998-06-16 Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid
PCT/US1999/011005 WO1999065854A1 (en) 1998-06-16 1999-05-18 Method to reduce carboxybenzaldehyde isomers in terephthalic acid or isophthalic acid

Publications (1)

Publication Number Publication Date
BR9911310A true BR9911310A (pt) 2001-03-13

Family

ID=22266696

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9911310-4A BR9911310A (pt) 1998-06-16 1999-05-18 Processo para reduzir 4-carboxibenzaldeìdo (4-cba) na produção de ácido tereftálico (tpa) ou 3-carboxibenzaldeìdo (3-cba) na produção de ácido isoftálico

Country Status (15)

Country Link
US (1) US5929274A (pt)
EP (1) EP1087925B1 (pt)
JP (1) JP4704561B2 (pt)
KR (1) KR100629101B1 (pt)
CN (1) CN1172894C (pt)
AU (1) AU4191099A (pt)
BR (1) BR9911310A (pt)
CA (1) CA2335231A1 (pt)
DE (1) DE69915062T2 (pt)
ES (1) ES2217760T3 (pt)
IL (1) IL140313A0 (pt)
RU (1) RU2230730C2 (pt)
TR (1) TR200100342T2 (pt)
TW (1) TW442463B (pt)
WO (1) WO1999065854A1 (pt)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7135596B2 (en) * 2002-04-23 2006-11-14 Bp Corporation North America Inc. Method of removing iron contaminants from liquid streams during the manufacture and/or purification of aromatic acids
US7307188B2 (en) * 2004-04-09 2007-12-11 Gtc Technology, Inc. Purification of carboxylic acids by complexation with selective solvents
US20050256335A1 (en) * 2004-05-12 2005-11-17 Ovidiu Marin Providing gases to aromatic carboxylic acid manufacturing processes
US7692037B2 (en) 2004-09-02 2010-04-06 Eastman Chemical Company Optimized liquid-phase oxidation
US7582793B2 (en) 2004-09-02 2009-09-01 Eastman Chemical Company Optimized liquid-phase oxidation
US7586000B2 (en) * 2004-09-02 2009-09-08 Eastman Chemical Company Optimized liquid-phase oxidation
US7371894B2 (en) * 2004-09-02 2008-05-13 Eastman Chemical Company Optimized liquid-phase oxidation
US7589231B2 (en) 2004-09-02 2009-09-15 Eastman Chemical Company Optimized liquid-phase oxidation
US7572932B2 (en) * 2004-09-02 2009-08-11 Eastman Chemical Company Optimized liquid-phase oxidation
US7910769B2 (en) * 2004-09-02 2011-03-22 Eastman Chemical Company Optimized liquid-phase oxidation
US7507857B2 (en) 2004-09-02 2009-03-24 Eastman Chemical Company Optimized liquid-phase oxidation
US7608733B2 (en) * 2004-09-02 2009-10-27 Eastman Chemical Company Optimized liquid-phase oxidation
US7504535B2 (en) * 2004-09-02 2009-03-17 Eastman Chemical Company Optimized liquid-phase oxidation
US7390921B2 (en) * 2004-09-02 2008-06-24 Eastman Chemical Company Optimized liquid-phase oxidation
US7692036B2 (en) 2004-11-29 2010-04-06 Eastman Chemical Company Optimized liquid-phase oxidation
US7568361B2 (en) 2004-09-02 2009-08-04 Eastman Chemical Company Optimized liquid-phase oxidation
US7495125B2 (en) * 2004-09-02 2009-02-24 Eastman Chemical Company Optimized liquid-phase oxidation
US7572936B2 (en) * 2004-09-02 2009-08-11 Eastman Chemical Company Optimized liquid-phase oxidation
US7399882B2 (en) * 2004-09-02 2008-07-15 Eastman Chemical Company Optimized liquid-phase oxidation
US7683210B2 (en) 2004-09-02 2010-03-23 Eastman Chemical Company Optimized liquid-phase oxidation
US7381836B2 (en) 2004-09-02 2008-06-03 Eastman Chemical Company Optimized liquid-phase oxidation
US7361784B2 (en) * 2004-09-02 2008-04-22 Eastman Chemical Company Optimized liquid-phase oxidation
US7741515B2 (en) 2004-09-02 2010-06-22 Eastman Chemical Company Optimized liquid-phase oxidation
PT1791800T (pt) * 2004-09-02 2018-02-02 Grupo Petrotemex Sa De Cv Oxidação em fase líquida optimizada
US7482482B2 (en) * 2004-09-02 2009-01-27 Eastman Chemical Company Optimized liquid-phase oxidation
US7884232B2 (en) * 2005-06-16 2011-02-08 Eastman Chemical Company Optimized liquid-phase oxidation
US7358389B2 (en) * 2006-01-04 2008-04-15 Eastman Chemical Company Oxidation system employing internal structure for enhanced hydrodynamics
BE1020269A5 (nl) 2012-01-17 2013-07-02 Taminco Gebruik van vervangende oplosmiddelen voor n-methylpyrrolidon (nmp).
US9346737B2 (en) 2013-12-30 2016-05-24 Eastman Chemical Company Processes for making cyclohexane compounds
US9340482B2 (en) 2013-12-30 2016-05-17 Eastman Chemical Company Processes for making cyclohexane compounds
US9328050B1 (en) 2014-12-23 2016-05-03 Eastman Chemical Company Processes for making hydroxymethylbenzoic acid compounds
US10315978B2 (en) 2015-11-16 2019-06-11 Sabic Global Technologies B.V. Method of producing terephthalic acid

Family Cites Families (123)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636899A (en) * 1951-01-29 1953-04-28 Du Pont Oxidation process for preparation of terephthalic acid
US2829160A (en) * 1953-10-12 1958-04-01 Chemstrand Corp Purification of terephthalic acid
US2833816A (en) * 1954-05-03 1958-05-06 Mid Century Corp Preparation of aromatic polycarboxylic acids
US2811548A (en) * 1954-07-30 1957-10-29 Chemstrand Corp Method of purifying aromatic dicarboxylic acids
US2849483A (en) * 1954-07-30 1958-08-26 Chemstrand Corp Method of purifying aromatic dicarboxylic acids
US2949483A (en) * 1954-07-30 1960-08-16 Chemstrand Corp Method of purifying aromatic dicarboxylic acids
BE547302A (pt) * 1955-05-04
GB818211A (en) 1955-11-08 1959-08-12 Hoechst Ag Manufacture of pure terephthalic acid
US2891992A (en) * 1955-12-08 1959-06-23 Henkel & Cie Gmbh Process for the rearrangement of salts of aromatic or heterocyclic carboxylic acids
US2833817A (en) * 1956-06-27 1958-05-06 Mid Century Corp Process for the preparation of terephthalic acid
US2923736A (en) * 1956-11-28 1960-02-02 Ici Ltd Purification of carboxylic acids
GB908011A (en) 1957-12-11 1962-10-10 Standard Oil Co Process for the separation of isophthalic and terephthalic acids
GB849189A (en) * 1958-03-26 1960-09-21 Basf Ag Improvements in the purification of crude terephthalic acid
NL245503A (pt) 1958-11-18
NL250177A (pt) 1959-04-06
NL272541A (pt) 1960-12-16
NL275610A (pt) 1961-03-06
FR1316914A (fr) 1961-03-06 1963-02-01 Chemstrand Corp Procédé de récupération de diacides organiques
NL276789A (pt) 1961-04-25
NL6407831A (pt) 1963-08-09 1965-02-10
NL128444C (pt) * 1963-10-10
US3330863A (en) * 1964-04-17 1967-07-11 Mobil Oil Corp Process for the purification of sublimable aromatic polycarboxylic acids
GB1085929A (en) * 1964-11-25 1967-10-04 Sumitomo Chemical Co Process for purifying terephthalic acid
US3388156A (en) * 1966-02-24 1968-06-11 Teijin Ltd Method of recovering crude terephthalic acid
US3497552A (en) * 1966-07-18 1970-02-24 Standard Oil Co Continuous crystallization in a plurality of cooling stages using dilutions by cooled solvent of feed to each stage
US3505398A (en) * 1966-09-22 1970-04-07 Standard Oil Co Terephthalic acid crystallization
US3584039A (en) * 1967-08-30 1971-06-08 Standard Oil Co Fiber-grade terephthalic acid by catalytic hydrogen treatment of dissolved impure terephthalic acid
US3574727A (en) * 1967-10-16 1971-04-13 Celanese Corp Purification of terephthalic acid
US3887613A (en) * 1968-02-15 1975-06-03 Celanese Corp Thermal purification of terephthalic acid using group I-B, II-B, VIII catalysts
US3862218A (en) * 1968-02-15 1975-01-21 Celanese Corp Purification of terephthalic acid by thermal treatment
BE732838A (pt) 1969-05-09 1969-10-16
GB1290981A (pt) 1970-01-21 1972-09-27
US3766258A (en) * 1970-06-29 1973-10-16 Monsanto Co Process for the production of aromatic polycarboxylic acids
JPS5518698B1 (pt) * 1971-04-03 1980-05-21
US3766257A (en) * 1971-05-28 1973-10-16 Sun Research Development Integrated terephthalic acid process
JPS5234590B2 (pt) * 1971-12-28 1977-09-03
US3953502A (en) * 1973-01-31 1976-04-27 Imperial Chemical Industries Limited Cyclopentane derivatives
US3931305A (en) * 1973-08-20 1976-01-06 Standard Oil Company Terephthalic acid recovery by continuous flash crystallization
US4053506A (en) * 1975-05-02 1977-10-11 Standard Oil Company (Indiana) Production of fiber-grade terephthalic acid
JPS5227743A (en) * 1975-08-26 1977-03-02 Mitsubishi Chem Ind Ltd Production of high-purity terephthalic acid
JPS5239643A (en) * 1975-09-23 1977-03-28 Mitsubishi Gas Chem Co Inc A process for preparing terephtalic acid
GB1578725A (en) * 1977-03-02 1980-11-05 Johnson Matthey Co Ltd Catalytic process for the purification of terephthalic acid
US4081464A (en) * 1976-07-26 1978-03-28 Standard Oil Company Iso- or terephthalic acid production in and recovery from benzoic acid-water solvent system
GB1582255A (en) * 1976-08-11 1981-01-07 Ici Ltd Crystallisation of terephthalic acid
JPS5353636A (en) * 1976-10-25 1978-05-16 Mitsubishi Gas Chem Co Inc Preparatin of highly pure aromatic dicarboxylic acid dichloride
NZ185635A (en) * 1976-11-18 1980-04-28 Ici Ltd Preparation of 3-dihalovinyl-2,2-dimethylcyclopropane carboxylic acid derivatives
US4345089A (en) * 1977-01-24 1982-08-17 Hercofina Recovery of aromatic carboxylic acid or ester thereof from residue fraction of oxidation or esterification reaction mixture
DE2714985C2 (de) * 1977-04-04 1982-05-06 Chemische Werke Hüls AG, 4370 Marl Verfahren zur Reinigung von Terephthalsäure
JPS5470235A (en) * 1977-11-14 1979-06-05 Mitsubishi Chem Ind Ltd Preparation of terephthalic acid
JPS5490132A (en) * 1977-12-07 1979-07-17 Mitsubishi Gas Chem Co Inc Preparation of high purity terephthalic acid
JPS54125631A (en) * 1978-02-20 1979-09-29 Mitsubishi Gas Chem Co Inc Preparation of high-purity terephthalic acid
DE2906945C2 (de) * 1978-02-23 1984-01-12 Asahi Kasei Kogyo K.K., Osaka Verfahren zur Gewinnung hochreiner Terephthalsäure
US4230882A (en) * 1978-05-19 1980-10-28 Asahi Kasei Kogyo Kabushiki Kaisha Process for the production of a high purity terephthalic acid
JPS5517309A (en) * 1978-07-21 1980-02-06 Mitsubishi Gas Chem Co Inc Preparation of high purity terephthalic acid
JPS5555138A (en) * 1978-10-19 1980-04-22 Mitsubishi Chem Ind Ltd Preparation of highly pure terephthalic acid
US4675438A (en) * 1978-11-17 1987-06-23 Amoco Corporation Direct continuous flow integration of production and purification of high purity iso- or terephthalic acid
EP0019999B1 (en) * 1979-05-02 1983-09-07 Imperial Chemical Industries Plc Acetals and their preparation
US4263452A (en) * 1979-06-12 1981-04-21 Mitsubishi Gas Chemical Company, Inc. Process for purifying terephthalic acid
GB2051804B (en) * 1979-07-02 1983-10-12 Ici Ltd Preparation of aromatic carboxylic acids
JPS606334B2 (ja) * 1979-07-16 1985-02-18 三菱レイヨン株式会社 高純度イソブチレンの製造法
US4317923A (en) * 1979-08-23 1982-03-02 Uop Inc. Purification of dicarboxylic aromatic acids
ATE4891T1 (de) * 1979-11-28 1983-10-15 Imperial Chemical Industries Plc Schlaemme von terephthalsaeure in aethylenglycol.
GB2072162B (en) * 1980-03-21 1984-03-21 Labofina Sa Process for the production and the recovery of terephthalic acid
US4380662A (en) * 1981-03-16 1983-04-19 Labofina, S.A. Process for the purification of terephthalic acid
US4438279A (en) * 1981-09-30 1984-03-20 Standard Oil Company (Indiana) Fiber-grade terephthalic acid recovered from the effluent from paraxylene oxidation in acetic acid and the catalytic hydrogenation of the oxidation effluent in the presence of metallic platinum family metals
US4467110A (en) * 1981-10-29 1984-08-21 Standard Oil Company (Indiana) Process for purification of crude terephthalic acid
US4467111A (en) * 1981-10-29 1984-08-21 Standard Oil Company (Indiana) Process for purification of crude terephthalic acid
US4415479A (en) * 1981-10-29 1983-11-15 Standard Oil Company (Indiana) Palladium on carbon catalyst for purification of crude terephthalic acid
JPS58126834A (ja) * 1982-01-23 1983-07-28 Mitsubishi Gas Chem Co Inc トリメリツト酸の晶析法
US4485244A (en) * 1982-11-03 1984-11-27 The Standard Oil Company Thermal process for the liquefaction of aromatic hydrocarbon oxidation residues and recovery of acetic acid
JPS59106435A (ja) * 1982-12-10 1984-06-20 Mitsubishi Chem Ind Ltd 高純度テレフタル酸の製法
US4447646A (en) * 1983-01-28 1984-05-08 Eastman Kodak Company Process for the purification of terephthalic acid
US4791226A (en) * 1983-06-23 1988-12-13 Amoco Corporation Catalyst and process for purification of crude terephthalic acid
JPS606635A (ja) * 1983-06-24 1985-01-14 Mitsubishi Petrochem Co Ltd １，２−不飽和カルボン酸および／またはそのエステルの精製法
US4500732A (en) * 1983-09-15 1985-02-19 Standard Oil Company (Indiana) Process for removal and recycle of p-toluic acid from terephthalic acid crystallizer solvent
US4540493A (en) * 1983-11-30 1985-09-10 Ecolochem, Inc. Process for treating wash water from the manufacture of terephthalic acid
US4675108A (en) * 1983-11-30 1987-06-23 Ecolochem, Inc. Apparatus for treating wash water from the manufacture of terephthalic acid
US4605763A (en) * 1984-08-31 1986-08-12 Eastman Kodak Company Process for the purification of terephthalic acid
US4626598A (en) * 1985-06-17 1986-12-02 Amoco Corporation Purification of terephthalic acid
US4629715A (en) * 1985-10-07 1986-12-16 Amoco Corporation Purification of terephthalic acid to relatively low levels of 4-carboxybenzaldehyde and catalyst therefor
US4728630A (en) * 1985-10-07 1988-03-01 Amoco Corporation Rhodium on carbon catalyst
US4892972A (en) * 1985-10-07 1990-01-09 Amoco Corporation Purification of crude terephthalic acid
US4652674A (en) * 1985-11-22 1987-03-24 Amoco Corporation Method for monitoring the fluorescence of 4-carboxy-p-terphenyl in crude terephthalic acid
US5166420A (en) * 1986-10-20 1992-11-24 Mitsui Petrochemical Industries, Ltd. Process for the production of high purity terephthalic acid
US5107020A (en) * 1986-12-04 1992-04-21 Amoco Corporation Method for producing purified trimesic acid
JP2504461B2 (ja) * 1987-04-24 1996-06-05 三菱化学株式会社 高品質テレフタル酸の製法
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
US4827026A (en) * 1987-11-24 1989-05-02 Amoco Corporation Method for producing 5-t-butylisophthalic acid
US4808751A (en) * 1988-03-29 1989-02-28 Amoco Corporation Method for reactivating a group VIII noble metal catalyst for use in the purification of crude terephthalic acid
US4833269A (en) * 1988-08-05 1989-05-23 Amoco Corporation Method for purifying terephthalic acid recycle streams
US4933492A (en) * 1988-10-13 1990-06-12 Amoco Corporation Purification of crude isophthalic acid
US4886901A (en) * 1988-11-21 1989-12-12 Amoco Corporation Method for purifying a crude dimethyl naphthalene dicarboxylate
FR2640263B1 (fr) * 1988-12-09 1991-06-14 Organo Synthese Ste Fse Preparation d'acide levulinique
US4939297A (en) * 1989-06-05 1990-07-03 Eastman Kodak Company Extraction process for removal of impurities from terephthalic acid filtrate
US4948921A (en) * 1989-06-29 1990-08-14 Amoco Corporation Process for the production and recovery of trimellitic acid
JP2847921B2 (ja) * 1989-07-18 1999-01-20 三菱化学株式会社 芳香族ハロゲン化合物の二量化法
US4933491A (en) * 1989-10-02 1990-06-12 Amoco Corporation Method for purifying a crude naphthalene dicarboxylic acid
US4937378A (en) * 1989-10-13 1990-06-26 Amoco Corporation Purification of crude isophthalic acid
JP2874223B2 (ja) * 1989-11-15 1999-03-24 三菱瓦斯化学株式会社 高純度２，６‐ナフタリンジカルボン酸の製造法
US5169977A (en) * 1990-03-15 1992-12-08 Mitsubishi Gas Chemical Company, Inc. Process for purifying dimethyl-2,6-naphthalene dicarboxylate
JP2893860B2 (ja) * 1990-05-17 1999-05-24 三菱瓦斯化学株式会社 高純度イソフタル酸の製造法
EP0465100B1 (en) * 1990-06-25 1994-09-28 Mitsubishi Gas Chemical Company, Inc. Process for producing high purity isophthalic acid
US5159109A (en) * 1990-06-25 1992-10-27 Amoco Corporation Purification of organic polycarboxylic acids
US5097066A (en) * 1990-06-27 1992-03-17 Amoco Corporation Process for purification of aromatic dicarboxylic acids
US5095145A (en) * 1990-11-05 1992-03-10 Amoco Corporation Preparation of purified terephthalic acid from waste polyethylene terephthalate
US5110984A (en) * 1990-11-06 1992-05-05 Amoco Corporation Process for increasing the yield of purified isophthalic acid and reducing waste-water treatment a
US5113015A (en) * 1990-11-20 1992-05-12 Amoco Corporation Recovery of acetic acid from methyl acetate
GB9102393D0 (en) 1991-02-05 1991-03-20 Ici Plc Production of terephthalic acid
GB9104776D0 (en) 1991-03-07 1991-04-17 Ici Plc Process for the production of terephthalic acid
US5095146A (en) * 1991-03-25 1992-03-10 Amoco Corporation Water addition to crystallization train to purify terephthalic acid product
US5175355A (en) * 1991-04-12 1992-12-29 Amoco Corporation Improved process for recovery of purified 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
US5254719A (en) 1991-05-31 1993-10-19 Amoco Corporation Process for preparing purified dimethyl naphthalenedicarboxylate
US5183933A (en) * 1991-10-15 1993-02-02 Amoco Corporation Process for preparing 2,6-naphthalene-dicarboxylic acid
EP0551596B1 (en) 1991-12-03 1996-05-15 Mitsubishi Chemical Corporation Process for producing naphtalenedicarboxylic acid
JP3295960B2 (ja) 1992-05-12 2002-06-24 三菱化学株式会社 アルデヒド類の製造方法
US5256817A (en) 1992-06-18 1993-10-26 Amoco Corporation Method for purifying a naphthalenedicarboxylic acid
US5292934A (en) 1992-06-18 1994-03-08 Amoco Corporation Method for preparing aromatic carboxylic acids
US5362908A (en) 1993-03-10 1994-11-08 Amoco Corporation Catalyst and method for purifying crude terephthalic acid, isophthalic acid or naphthalene dicarboxylic acid
US5354898A (en) 1993-06-17 1994-10-11 Amoco Corporation Method for purifying crude aromatic carboxylic acids
KR970000136B1 (ko) * 1993-09-28 1997-01-04 브이.피. 유리예프 고순도 벤젠디카르복실산 이성질체의 제조방법
US5567842A (en) 1994-11-16 1996-10-22 Mitsubishi Chemical Corporation Process for producing terephthalic acid
US6013835A (en) * 1995-06-07 2000-01-11 Hfm International, Inc. Method and apparatus for preparing purified terephthalic acid

Also Published As

Publication number Publication date
AU4191099A (en) 2000-01-05
KR100629101B1 (ko) 2006-09-28
JP2002518359A (ja) 2002-06-25
WO1999065854A1 (en) 1999-12-23
JP4704561B2 (ja) 2011-06-15
EP1087925B1 (en) 2004-02-25
CN1172894C (zh) 2004-10-27
IL140313A0 (en) 2002-02-10
DE69915062D1 (de) 2004-04-01
RU2230730C2 (ru) 2004-06-20
CA2335231A1 (en) 1999-12-23
KR20010052888A (ko) 2001-06-25
TR200100342T2 (tr) 2001-06-21
EP1087925A1 (en) 2001-04-04
CN1312786A (zh) 2001-09-12
US5929274A (en) 1999-07-27
ES2217760T3 (es) 2004-11-01
TW442463B (en) 2001-06-23
DE69915062T2 (de) 2004-10-14

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