WO2004035515A1 - Process for production of a carboxylic acid/diol mixture suitable for use in polyester production - Google Patents
Process for production of a carboxylic acid/diol mixture suitable for use in polyester production Download PDFInfo
- Publication number
- WO2004035515A1 WO2004035515A1 PCT/US2003/031957 US0331957W WO2004035515A1 WO 2004035515 A1 WO2004035515 A1 WO 2004035515A1 US 0331957 W US0331957 W US 0331957W WO 2004035515 A1 WO2004035515 A1 WO 2004035515A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terephthalic acid
- carboxylic acid
- diol
- crude
- acid solution
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group
-
- 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
-
- 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
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
-
- 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
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/80—Phthalic acid esters
- C07C69/82—Terephthalic acid esters
Definitions
- Step (2) is purification/separation of the terephthalic acid from partial oxidation products usually via fractional crystallization followed by liquor exchange with contaminant-free water;
- the primary utility of the invention is reduction of capital and operating costs associated with the isolation of a terephthalic acid powder.
- the post- hydrogenated aqueous solution is passed to a series of crystallizer vessels for the purpose of purifying the terephthalic acid by crystallization and for the purpose of obtaining a uniform particle size distribution necessary for good flowability of purified terephthalic powder.
- the p-toluic acid contaminated mother liquor from the crystallization process must be removed prior to a drying step to isolate the purified terephthalic powder.
- a process for producing a terephthalic acid/diol mixture comprising the following steps:
- a process for producing a carboxylic acid/diol mixture comprising removing a portion of the p-toluic contaminated water in an terephthalic acid aqueous slurry by adding a diol in a liquor removal zone to produce said carboxylic acid/ethylene glycol mixture.
- a process for producing a terephthalic acid/ethylene glycol mixture comprising removing a portion of the p-toluic contaminated water in an terephthalic acid aqueous slurry by adding a diol in a liquor removal zone to produce the terephthalic acid/diol mixture.
- a process for producing a terephthalic acid/ethylene glycol mixture comprising the following steps:
- Step (3) comprises, optionally, flashing the decolorized carboxylic acid solution 135 in a flashing zone 145 to remove a portion of the water from the decolorized carboxylic acid solution in conduit 135.
- the flashing of the aqueous carboxylic solution 135 can be accomplished by any means know in the art. Typically, a vessel or a plurality of vessels are used to accomplish the flashing. In the flashing zone 145, water and residual hydrogen can be removed as a vapor via conduit 150.
- the flash vessel(s) operate at a temperature sufficient to remove a portion of the water.
- flashing zone 145 can be omitted as indicated by conduit 140.
- Step (3) comprises crystallizing the decolorized carboxylic acid solution in conduit 335 in a crystallization zone 345 to form an aqueous slurry in conduit 355.
- the diol in conduit 370 is ethylene glycol.
- the diol in conduit 370 is introduced into the liquor removal zone 360 via conduit 370.
- the removal of the contaminated water via conduit 365 in the liquor removal zone 360 can be accomplished using variety of techniques including, but not limited to, cyclones, centrifuges, and filters.
- the key factor in the liquor removal zone 360 is to select a temperature range where the typical contaminants preferably remain with the-aqueous mother liquor instead of remaining with the carboxylic acid.
- the resultant carboxylic acid/diol mixture is removed via conduit 375.
- the resultant carboxylic acid/diol mixture in conduit 375 is adequate as feed material for the esterification of carboxylic acid with the diol to produce the ester of carboxylic acid.
- Step (3) comprises crystallizing said decolorized terephthalic acid solution in conduit 435 in a crystallization zone 445 to form a terephthalic acid aqueous slurry in conduit 455.
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0314833-5A BRPI0314833B1 (en) | 2002-10-15 | 2003-10-09 | PROCESSES FOR THE PRODUCTION OF A MIXTURE OF CARBOXYLIC ACID / DIOL AND FOR THE PRODUCTION OF A MIXTURE OF TERAFTALIC ACID / DIOL |
KR1020127005970A KR101288685B1 (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
CA002498621A CA2498621A1 (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
BR0314833-5A BR0314833A (en) | 2002-10-15 | 2003-10-09 | Processes for the production of a carboxylic acid / diol mixture and for the production of a teraphthalic acid / diol mixture, discolored terephthalic acid solution, aqueous terephthalic acid suspension, process for the manufacture of a hydroxyalkyl ester stream, and, hydroxyalkyl ester |
MXPA05003813A MXPA05003813A (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production. |
ES03808983T ES2708691T3 (en) | 2002-10-15 | 2003-10-09 | Process for the production of a carboxylic acid / diol mixture suitable for use in the production of polyesters |
JP2004544826A JP2006503087A (en) | 2002-10-15 | 2003-10-09 | Process for producing a carboxylic acid / diol mixture suitable for use in the production of polyester |
AU2003277321A AU2003277321A1 (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
KR1020057006467A KR101247480B1 (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
EP03808983.5A EP1551788B1 (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/271,058 | 2002-10-15 | ||
US10/271,058 US7276625B2 (en) | 2002-10-15 | 2002-10-15 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004035515A1 true WO2004035515A1 (en) | 2004-04-29 |
Family
ID=32069073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/031957 WO2004035515A1 (en) | 2002-10-15 | 2003-10-09 | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
Country Status (18)
Country | Link |
---|---|
US (2) | US7276625B2 (en) |
EP (1) | EP1551788B1 (en) |
JP (1) | JP2006503087A (en) |
KR (2) | KR101288685B1 (en) |
CN (1) | CN100491321C (en) |
AR (1) | AR041608A1 (en) |
AU (1) | AU2003277321A1 (en) |
BR (2) | BRPI0314833B1 (en) |
CA (1) | CA2498621A1 (en) |
ES (1) | ES2708691T3 (en) |
MX (1) | MXPA05003813A (en) |
MY (1) | MY138840A (en) |
PL (1) | PL377385A1 (en) |
PT (1) | PT1551788T (en) |
RU (1) | RU2330014C2 (en) |
TR (1) | TR201900978T4 (en) |
TW (1) | TWI316932B (en) |
WO (1) | WO2004035515A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005070525A2 (en) * | 2004-01-15 | 2005-08-04 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
WO2006034740A1 (en) * | 2004-09-28 | 2006-04-06 | Zimmer Aktiengesellschaft | Method for producing polyesters |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
US7880031B2 (en) * | 2005-05-19 | 2011-02-01 | Eastman Chemical Company | Process to produce an enrichment feed |
US20060264662A1 (en) * | 2005-05-19 | 2006-11-23 | Gibson Philip E | Esterification of an enriched composition |
US7557243B2 (en) * | 2005-05-19 | 2009-07-07 | Eastman Chemical Company | Enriched terephthalic acid composition |
US20060264664A1 (en) * | 2005-05-19 | 2006-11-23 | Parker Kenny R | Esterification of an exchange solvent enriched composition |
US7834208B2 (en) * | 2005-05-19 | 2010-11-16 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
US7741516B2 (en) * | 2005-05-19 | 2010-06-22 | Eastman Chemical Company | Process to enrich a carboxylic acid composition |
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 |
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 |
US20060264656A1 (en) * | 2005-05-19 | 2006-11-23 | Fujitsu Limited | Enrichment process using compounds useful in a polyester process |
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 |
US7888529B2 (en) | 2006-03-01 | 2011-02-15 | Eastman Chemical Company | Process to produce a post catalyst removal composition |
US7714094B2 (en) * | 2007-11-15 | 2010-05-11 | Eastman Chemical Company | Simplified isophthalic acid process for modifying PET |
RU2648983C1 (en) * | 2014-09-24 | 2018-03-29 | Басф Се | Method of obtaining diesters of terephthalic acid |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3057909A (en) * | 1960-10-12 | 1962-10-09 | Du Pont | Esterification of terephthalic acid with aqueous glycol |
GB994769A (en) * | 1963-03-29 | 1965-06-10 | Standard Oil Co | Purification of terephthalic acid |
GB1334452A (en) * | 1970-04-01 | 1973-10-17 | Fmc Corp | Production of ethylene glycol teraphthalic acid esters |
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 |
Family Cites Families (97)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US577161A (en) * | 1897-02-16 | Souri | ||
US305790A (en) * | 1884-09-30 | Bush euegess | ||
US3064044A (en) | 1957-08-15 | 1962-11-13 | Standard Oil Co | Multistage oxidation system for preparing dicarboxylic acid |
GB1059840A (en) | 1963-12-30 | 1967-02-22 | Teijin Ltd | Processes for the preparation of terephthalic acid and the preparation of linear polyesters therefrom |
US3584039A (en) | 1967-08-30 | 1971-06-08 | Standard Oil Co | Fiber-grade terephthalic acid by catalytic hydrogen treatment of dissolved impure terephthalic acid |
US3683018A (en) | 1969-05-26 | 1972-08-08 | Standard Oil Co | Integrated oxidation of isomeric xylene mixture to isomeric phthalic acid mixture and separation of mixture of isomeric phthalic acids into individual isomer products |
US3839436A (en) | 1969-05-26 | 1974-10-01 | Standard Oil Co | Integration of para-or meta-xylene oxidation to terephthalic acid or isophthalic acid and its purification by hydrogen treatment of aqueous solution |
JPS4815848B1 (en) | 1969-06-06 | 1973-05-17 | ||
SU1042809A1 (en) | 1971-01-21 | 1983-09-23 | Всесоюзный Научно-Исследовательский И Проектный Институт Мономеров | Continuous-action deposition centrifugal machine |
JPS4826740A (en) * | 1971-08-06 | 1973-04-09 | ||
JPS5146098B2 (en) | 1971-12-16 | 1976-12-07 | ||
US3931305A (en) | 1973-08-20 | 1976-01-06 | Standard Oil Company | Terephthalic acid recovery by continuous flash crystallization |
US3850983A (en) | 1973-10-15 | 1974-11-26 | Standard Oil Co | Separation of terephthalic from paratoluic acid from solutions thereof in water and/or acetic acid |
JPS523030A (en) | 1975-06-25 | 1977-01-11 | Mitsubishi Chem Ind Ltd | Process for manufacturing high purity terephthalic acid |
GB1498031A (en) | 1975-08-06 | 1978-01-18 | Ici Ltd | Level controller |
JPS52113940A (en) | 1976-03-19 | 1977-09-24 | Toshiba Corp | Preparation of liquid crystals |
CA1067095A (en) | 1976-07-06 | 1979-11-27 | Hiroshi Hashizume | Process for producing terephthalic acid |
JPS5949212B2 (en) | 1976-09-16 | 1984-12-01 | 三菱化学株式会社 | Manufacturing method of terephthalic acid |
JPS5353634A (en) | 1976-10-25 | 1978-05-16 | Toray Ind Inc | Preparation of highly pure |
JPS5390233A (en) | 1977-01-14 | 1978-08-08 | Toray Ind Inc | Purification of terephthalic acid |
JPS5390234A (en) | 1977-01-17 | 1978-08-08 | Nippon Chemtec Consulting Inc | Method of purifying terephthalic acid |
US4158738A (en) * | 1977-05-26 | 1979-06-19 | E. I. Du Pont De Nemours And Company | Process for the production of fiber-grade terephthalic acid |
US4330676A (en) | 1977-07-04 | 1982-05-18 | Imperial Chemical Industries Limited | Oxidation process |
JPS5931491B2 (en) | 1977-08-12 | 1984-08-02 | 三井化学株式会社 | Method for replacing and separating mother liquor in terephthalic acid suspension |
US4201871A (en) | 1978-02-23 | 1980-05-06 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for recovering terephthalic acid |
JPS5517309A (en) | 1978-07-21 | 1980-02-06 | Mitsubishi Gas Chem Co Inc | Preparation of high purity terephthalic acid |
JPS5533421A (en) | 1978-08-29 | 1980-03-08 | Kuraray Yuka Kk | Method of centrifuging slurry containing crystals of terephthalic acid |
GB2072162B (en) | 1980-03-21 | 1984-03-21 | Labofina Sa | Process for the production and the recovery of terephthalic acid |
DE3128474A1 (en) | 1980-07-21 | 1982-06-09 | Hercofina, Wilmington, N.C. | Process for countercurrent washing of finely divided crude terephthalic acid |
US5175554A (en) * | 1980-12-29 | 1992-12-29 | Raytheon Company | All weather tactical strike system (AWTSS) and method of operation |
US4380662A (en) | 1981-03-16 | 1983-04-19 | Labofina, S.A. | Process for the purification of terephthalic acid |
US4334086A (en) | 1981-03-16 | 1982-06-08 | Labofina S.A. | Production of terephthalic acid |
JPS5966305A (en) | 1982-10-05 | 1984-04-14 | Tsukishima Kikai Co Ltd | Counterflow type cooling and purifying method for molten substance |
JPS59104345A (en) | 1982-12-03 | 1984-06-16 | Kuraray Yuka Kk | Production of terephthalic acid suitable for direct polymerization |
DE3328543A1 (en) | 1983-08-08 | 1985-03-21 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Use of a screen-bowl screw conveyor centrifuge for the separation of fine crystalline solids from a liquid |
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 |
US4892972A (en) * | 1985-10-07 | 1990-01-09 | Amoco Corporation | Purification of crude terephthalic acid |
DE3536622A1 (en) | 1985-10-15 | 1987-04-16 | Krupp Gmbh | METHOD AND DEVICE FOR OBTAINING SOLID MATERIALS FROM LIQUID MIXTURES |
DE3639958A1 (en) | 1986-01-10 | 1987-07-16 | Amberger Kaolinwerke Gmbh | MULTI-STAGE COUNTERFLOW ARRANGEMENT AND RELATED PROCEDURES |
FI74752C (en) | 1986-03-20 | 1992-12-01 | Ahlstroem Oy | OVER ANCHORING OF CELLULOSE TV |
JP2545103B2 (en) | 1987-12-17 | 1996-10-16 | 三井石油化学工業株式会社 | Dispersion medium exchange method of terephthalic acid slurry |
US4861919A (en) | 1988-02-29 | 1989-08-29 | The Dow Chemical Company | Countercurrent multi-stage water crystallization of aromatic compounds |
DE68915706T2 (en) | 1988-03-25 | 1994-12-22 | Amoco Corp | GASKET FOR A ROTATING AXIS. |
US4939297A (en) | 1989-06-05 | 1990-07-03 | Eastman Kodak Company | Extraction process for removal of impurities from terephthalic acid filtrate |
JPH0386287A (en) | 1989-08-28 | 1991-04-11 | Idemitsu Petrochem Co Ltd | Method and device for washing granular resin |
US5080721A (en) | 1990-02-28 | 1992-01-14 | Conoco Inc. | Process for cleaning particulate solids |
US5107874A (en) | 1990-02-28 | 1992-04-28 | Conoco Inc. | Apparatus for cleaning particulate solids |
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 |
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 |
US5175355A (en) | 1991-04-12 | 1992-12-29 | Amoco Corporation | Improved process for recovery of purified terephthalic acid |
GB9310070D0 (en) | 1992-05-29 | 1993-06-30 | Ici Plc | Process for the production of purified terephthalic acid |
GB9302333D0 (en) | 1993-02-05 | 1993-03-24 | Ici Plc | Filtration process |
JPH06327915A (en) | 1993-05-24 | 1994-11-29 | Mitsui Petrochem Ind Ltd | Method for recovering crystal from slurry and device therefor |
US5454959A (en) | 1993-10-29 | 1995-10-03 | Stevens; Jay S. | Moving bed filters |
JP3939367B2 (en) | 1993-11-30 | 2007-07-04 | 三菱瓦斯化学株式会社 | Method for producing high purity terephthalic acid |
JP4055913B2 (en) | 1994-04-26 | 2008-03-05 | 三菱瓦斯化学株式会社 | Method for producing high purity terephthalic acid |
US5653673A (en) | 1994-06-27 | 1997-08-05 | Amoco Corporation | Wash conduit configuration in a centrifuge apparatus and uses thereof |
US5635074A (en) | 1995-02-23 | 1997-06-03 | Motorola, Inc. | Methods and systems for controlling a continuous medium filtration system |
US5567842A (en) | 1994-11-16 | 1996-10-22 | Mitsubishi Chemical Corporation | Process for producing terephthalic acid |
US5712412A (en) | 1994-12-26 | 1998-01-27 | Mitsubishi Gas Chemical Co., Inc. | Process for producing highly pure terephthalic acid |
US5476919A (en) * | 1995-02-21 | 1995-12-19 | Minnesota Mining And Manufacturing Company | Process for esterification |
JP3979505B2 (en) | 1995-05-17 | 2007-09-19 | 三菱瓦斯化学株式会社 | Method for producing high purity terephthalic acid |
US5840968A (en) | 1995-06-07 | 1998-11-24 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
US6013835A (en) | 1995-06-07 | 2000-01-11 | Hfm International, Inc. | Method and apparatus for preparing purified terephthalic acid |
EP0802938B1 (en) | 1995-11-10 | 2002-12-18 | Mitsui Chemicals, Inc. | Process for producing polyethylene naphthalate |
US5616792A (en) | 1996-02-01 | 1997-04-01 | Amoco Corporation | Catalytic purification of dicarboxylic aromatic acid |
JPH09255619A (en) | 1996-03-28 | 1997-09-30 | Mitsubishi Chem Corp | Production of terephthalic acid |
JP3731681B2 (en) | 1996-04-18 | 2006-01-05 | 三菱瓦斯化学株式会社 | Method for producing high purity terephthalic acid |
JP3788634B2 (en) | 1996-04-18 | 2006-06-21 | 三菱瓦斯化学株式会社 | Production method of high purity terephthalic acid |
US5840965A (en) | 1996-06-24 | 1998-11-24 | E. I. Du Pont De Nemours And Company | Process for the production of purified telephthalic acid |
JPH1036313A (en) | 1996-07-22 | 1998-02-10 | Tsukishima Kikai Co Ltd | Production of high-purity aromatic dicarboxylic acid and system therefor |
JPH1045667A (en) | 1996-07-29 | 1998-02-17 | Mitsubishi Gas Chem Co Inc | Production of high-purity terephthalic acid using dispersion medium exchanger |
US5955394A (en) | 1996-08-16 | 1999-09-21 | Mobile Process Technology, Co. | Recovery process for oxidation catalyst in the manufacture of aromatic carboxylic acids |
CA2241568A1 (en) | 1996-10-30 | 1998-05-07 | Hiroshi Suzuki | Process for preparing aromatic dicarboxylic acids |
KR100264749B1 (en) | 1997-02-17 | 2000-09-01 | 나까니시 히로유끼 | Production of highly pure terephthalic acid |
ID23502A (en) | 1997-02-27 | 2000-04-27 | Du Pont | MANUFACTURING OF REALIZED ACID |
GB9717251D0 (en) | 1997-08-15 | 1997-10-22 | Ici Plc | Process and apparatus |
JP2002508343A (en) | 1997-12-15 | 2002-03-19 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | Method for producing aromatic carboxylic acid |
DE19811280C2 (en) | 1998-03-12 | 2002-06-27 | Inventa Fischer Gmbh | Method and device for the recovery of linear polyester |
US6228215B1 (en) | 1998-04-06 | 2001-05-08 | Hoffman Enviornmental Systems, Inc. | Method for countercurrent treatment of slurries |
US5971907A (en) | 1998-05-19 | 1999-10-26 | Bp Amoco Corporation | Continuous centrifugal separator with tapered internal feed distributor |
NL1010393C2 (en) | 1998-10-26 | 2000-04-27 | Tno | Method and device for extracting a component from solid particulate material by extraction. |
US6153790A (en) | 1998-12-01 | 2000-11-28 | Shell Oil Company | Method to produce aromatic dicarboxylic acids using cobalt and zirconium catalysts |
ES2238837T3 (en) | 1999-06-16 | 2005-09-01 | Amut S.P.A. | PLANT TO WASH PLASTICS. |
US6297348B1 (en) | 1999-08-30 | 2001-10-02 | Shell Oil Company | Closely linking a NDA process with a pen process |
CN1424996A (en) | 2000-01-25 | 2003-06-18 | 因卡国际公司 | Process for the recovery of crude terephthalic acid (CTA) |
US6517733B1 (en) | 2000-07-11 | 2003-02-11 | Vermeer Manufacturing Company | Continuous flow liquids/solids slurry cleaning, recycling and mixing system |
CN1114588C (en) | 2000-12-13 | 2003-07-16 | 中国石化集团扬子石油化工有限责任公司 | Method of reducing vibration and fault of vertical centrifuge in production of p-benzene dicarboxylic acid |
JP2003062405A (en) | 2001-08-29 | 2003-03-04 | Mitsubishi Chemicals Corp | Solid-liquid separating method |
WO2003020680A1 (en) | 2001-08-29 | 2003-03-13 | Mitsubishi Chemical Corporation | Method for producing aromatic dicarboxylic acid |
JP3958948B2 (en) | 2001-10-16 | 2007-08-15 | 帝人ファイバー株式会社 | Production method of polyester raw material |
CN1294182C (en) | 2001-12-03 | 2007-01-10 | 株式会社吴羽 | Method of continuously cleansing polyarylene sulfide |
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 |
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 |
US7282151B2 (en) | 2003-06-05 | 2007-10-16 | Eastman Chemical Company | Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration |
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 |
-
2002
- 2002-10-15 US US10/271,058 patent/US7276625B2/en not_active Expired - Lifetime
-
2003
- 2003-10-09 ES ES03808983T patent/ES2708691T3/en not_active Expired - Lifetime
- 2003-10-09 AU AU2003277321A patent/AU2003277321A1/en not_active Abandoned
- 2003-10-09 CN CNB2003801014393A patent/CN100491321C/en not_active Expired - Lifetime
- 2003-10-09 KR KR1020127005970A patent/KR101288685B1/en active IP Right Grant
- 2003-10-09 KR KR1020057006467A patent/KR101247480B1/en active IP Right Grant
- 2003-10-09 MX MXPA05003813A patent/MXPA05003813A/en active IP Right Grant
- 2003-10-09 CA CA002498621A patent/CA2498621A1/en not_active Abandoned
- 2003-10-09 BR BRPI0314833-5A patent/BRPI0314833B1/en unknown
- 2003-10-09 RU RU2005114535/04A patent/RU2330014C2/en active
- 2003-10-09 BR BR0314833-5A patent/BR0314833A/en active IP Right Grant
- 2003-10-09 TW TW092128109A patent/TWI316932B/en not_active IP Right Cessation
- 2003-10-09 TR TR2019/00978T patent/TR201900978T4/en unknown
- 2003-10-09 WO PCT/US2003/031957 patent/WO2004035515A1/en active Application Filing
- 2003-10-09 JP JP2004544826A patent/JP2006503087A/en active Pending
- 2003-10-09 PL PL377385A patent/PL377385A1/en unknown
- 2003-10-09 EP EP03808983.5A patent/EP1551788B1/en not_active Expired - Lifetime
- 2003-10-09 PT PT03808983T patent/PT1551788T/en unknown
- 2003-10-14 MY MYPI20033908A patent/MY138840A/en unknown
- 2003-10-14 AR ARP030103733A patent/AR041608A1/en unknown
-
2005
- 2005-03-10 US US11/076,840 patent/US7339072B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3057909A (en) * | 1960-10-12 | 1962-10-09 | Du Pont | Esterification of terephthalic acid with aqueous glycol |
GB994769A (en) * | 1963-03-29 | 1965-06-10 | Standard Oil Co | Purification of terephthalic acid |
GB1334452A (en) * | 1970-04-01 | 1973-10-17 | Fmc Corp | Production of ethylene glycol teraphthalic acid esters |
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 |
Non-Patent Citations (1)
Title |
---|
ALLEN N S ET AL: "Spectroscopic analysis of organic contaminants in terephthalic acid: colour implications in poly(ethylene terephthalate) manufacture", POLYMER DEGRADATION AND STABILITY, BARKING, GB, vol. 62, no. 2, November 1998 (1998-11-01), pages 373 - 383, XP004294553, ISSN: 0141-3910 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005070525A2 (en) * | 2004-01-15 | 2005-08-04 | Eastman Chemical Company | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
WO2005070525A3 (en) * | 2004-01-15 | 2005-09-22 | Eastman Chem Co | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production |
WO2006034740A1 (en) * | 2004-09-28 | 2006-04-06 | Zimmer Aktiengesellschaft | Method for producing polyesters |
EA012270B1 (en) * | 2004-09-28 | 2009-08-28 | Лурги Циммер Гмбх | Method for producing polyethyleneterephthalate |
Also Published As
Publication number | Publication date |
---|---|
JP2006503087A (en) | 2006-01-26 |
TWI316932B (en) | 2009-11-11 |
EP1551788A1 (en) | 2005-07-13 |
EP1551788B1 (en) | 2018-12-26 |
PL377385A1 (en) | 2006-02-06 |
AU2003277321A1 (en) | 2004-05-04 |
KR101247480B1 (en) | 2013-04-01 |
KR101288685B1 (en) | 2013-07-22 |
AR041608A1 (en) | 2005-05-26 |
RU2005114535A (en) | 2006-01-20 |
TR201900978T4 (en) | 2019-02-21 |
CA2498621A1 (en) | 2004-04-29 |
MXPA05003813A (en) | 2005-06-08 |
US7339072B2 (en) | 2008-03-04 |
BRPI0314833B1 (en) | 2021-03-23 |
CN1705629A (en) | 2005-12-07 |
BR0314833A (en) | 2005-08-09 |
ES2708691T3 (en) | 2019-04-10 |
US20050154179A1 (en) | 2005-07-14 |
TW200418789A (en) | 2004-10-01 |
US7276625B2 (en) | 2007-10-02 |
MY138840A (en) | 2009-07-31 |
US20040073059A1 (en) | 2004-04-15 |
CN100491321C (en) | 2009-05-27 |
RU2330014C2 (en) | 2008-07-27 |
KR20050055764A (en) | 2005-06-13 |
PT1551788T (en) | 2019-03-28 |
KR20120034823A (en) | 2012-04-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7339072B2 (en) | Process for production of a carboxylic acid/diol mixture suitable for use in polyester production | |
KR101004211B1 (en) | Process for the purification of crude carboxylic acid slurry | |
US7132566B2 (en) | Process for the purification of a crude carboxylic acid slurry | |
EP0818434B1 (en) | Process for the production of high-purity isophthalic acid | |
US7074954B2 (en) | Process for the oxidative purification of terephthalic acid | |
US7161027B2 (en) | Process for the oxidative purification of terephthalic acid | |
EP0764627B1 (en) | Process for producing highly pure terephthalic acid | |
US7358392B2 (en) | Process for the oxidative purification of terephthalic acid | |
WO2007092183A2 (en) | Process for the purification of a crude carboxylic acid slurry | |
KR101034964B1 (en) | Process for the oxidative purification of terephthalic acid | |
EP1569887A1 (en) | Process for the purification of a crude carboxylic acid slurry |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2498621 Country of ref document: CA Ref document number: 936/DELNP/2005 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003808983 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004544826 Country of ref document: JP Ref document number: PA/a/2005/003813 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057006467 Country of ref document: KR Ref document number: 377385 Country of ref document: PL |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20038A14393 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2005114535 Country of ref document: RU Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057006467 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003808983 Country of ref document: EP |