公开(公告)号：EP1395543A1

公开(公告)日：2004-03-10

申请号：EP02739637.3

申请日：2002-06-04

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： LIN, Robert ,  O'MEADHRA, Ruairi, Seosamh ,  SHEPPARD, Ronald, Buford

IPC: C07C51/43 ,  C07C63/26

CPC classification number: C07C63/26 ,  C07C51/265 ,  C07C51/43 ,  C07C51/487

Abstract: Disclosed is a process for the production of terephthalic acid by a plurality of process steps including the catalyst oxidation of a dialkylbenzene compound, a second oxidation, a hydrogenation of the product of the second oxidation, and crystallization of the hydrogenation terephthalic acid using a plurality of series-connected crystallizers.

公开(公告)号：EP1395543B1

公开(公告)日：2010-04-14

申请号：EP02739637.3

申请日：2002-06-04

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： LIN, Robert ,  O'MEADHRA, Ruairi, Seosamh ,  SHEPPARD, Ronald, Buford

IPC: C07C51/43 ,  C07C63/26

CPC classification number: C07C63/26 ,  C07C51/265 ,  C07C51/43 ,  C07C51/487

公开(公告)号：EP1989163A1

公开(公告)日：2008-11-12

申请号：EP07750865.3

申请日：2007-02-16

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： LIN, Robert ,  O'MEADHRA, Ruairi, Seosamh ,  WONDERS, Alan, George ,  PELL, Thomas, Michael, Jr.

IPC: C07C51/265 ,  C07C63/26 ,  B01J8/22

CPC classification number: C07C51/265 ,  C07C63/26

Abstract: Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes an oxidative digestion reactor/zone configured to provide optimized residence time distribution for the solid and liquid phases of the reaction medium processed therein.

公开(公告)号：EP1912928A2

公开(公告)日：2008-04-23

申请号：EP06800421.7

申请日：2006-07-27

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： LIN, Robert ,  GIBSON, Philip, Edward ,  PARKER, Kenny, Randolph

IPC: C07C51/47 ,  C07C51/44 ,  C07C63/26 ,  C07C63/15

CPC classification number: C07C51/44 ,  C07C51/47 ,  C07C63/26

Abstract: A process is disclosed that relates to the removal of impurities, specifically benzoic acid, from a mother liquor produced in the synthesis of carboxylic acid, typically terephthalic acid.

公开(公告)号：EP1478675B1

公开(公告)日：2008-01-02

申请号：EP03716178.3

申请日：2003-02-24

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： SUMNER, Charles, Edwan, Jr. ,  GUSTAFSON, Bruce, LeRoy ,  LIN, Robert

IPC: C08G63/199 ,  C08G63/91 ,  B01J23/40 ,  C07C61/09

CPC classification number: C08G63/199 ,  B01J23/40 ,  B01J23/892 ,  C08G63/916

Abstract: Disclosed is a process of hydrogenating a polyester oligomer containing terephthalic acid residues wherein terephthalic acid residues are converted to residues of 1,4-cyclohexanedicarboxylic acid. Also disclosed is a process for the preparation of polyesters containing 1,4-cyclohexanedicarboxylic acid residues by first hydrogenating a polyester oligomer containing terephthalic acid residues and then reacting the resulting oligomer with one or more polyester-forming reactants to produce a higher molecular weight polyester.

公开(公告)号：EP1392635B1

公开(公告)日：2005-12-07

申请号：EP02739565.6

申请日：2002-06-04

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： O'MEADHRA, Ruairi, Seosamh ,  LIN, Robert ,  KIRK, Shane, Kipley ,  MCMURRAY, Brian, David

IPC: C07C51/43 ,  C07C63/26

CPC classification number: C07C51/43 ,  C07C63/26

Abstract: Disclosed is a method for the recovery of crystalline therephthalic acid containing less than 150 ppmw p-toluic acid by subjecting a solution of therephthalic acid containing minor amounts of p-toluic acid to crystallization in a crystallization zone comprising a plurality of series-connected crystallizers wherein the solution is subjected to rate-controlled evaporative cooling by sequential reduction in pressure and temperature to cause crystallization of therephthalic acid, wherein the pressure of the solution at the end of the crystallization zone is ambient pressure or less. Solvent which is evaporated from the crystallizers is collected and condensed and the condensed solvent is returned to the crystallization zone at a point subsequent to the crystallizer from which it was obtained.

公开(公告)号：EP1569888A1

公开(公告)日：2005-09-07

申请号：EP03790246.7

申请日：2003-12-03

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： SHEPPARD, Ronald, Buford ,  TENNANT, Brent, Alan ,  WOODRUFF, Thomas, Earl ,  LIN, Robert

IPC: C07C51/47 ,  C07C63/26 ,  C07C51/265

CPC classification number: C07C51/43 ,  C07C51/487 ,  C07C63/26

Abstract: Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The process produces purified carboxylic acid slurry having good color and low impurity levels without the use of purification steps like hydrogenation or an impurity removal process.

公开(公告)号：EP1551788A1

公开(公告)日：2005-07-13

申请号：EP03808983.5

申请日：2003-10-09

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： LIN, Robert

IPC: C07C51/48 ,  C07C67/03 ,  C07C63/26 ,  C07C69/82

CPC classification number: C07C51/487 ,  C07C51/43 ,  C07C51/47 ,  C07C67/08 ,  C07C63/26 ,  C07C69/82

Abstract: In this invention, a process is provided by which a carboxylic acid/diol mixture suitable as starting material for a polyester production is obtained from a decolorized carboxylic acid solution without isolation of a substantially dry carboxylic acid solid. More specifically, in this invention, a process is provided by which a terephthalic acid/ethylene glycol mixture suitable as starting material for a polyester production is obtained from a decolorized terephthalic acid solution without isolation of a substantially dry terephthalic acid solid.

Abstract translation: 在本发明中，提供了一种过程，通过该羧酸/二醇适合作为聚酯制造从未经基本上干燥的羧酸固体的隔离的脱色羧酸溶液获得原料混合物。更具体地，在本发明中，一 过程是由适合作为聚酯制造原料对苯二甲酸/乙二醇混合物从脱色对苯二甲酸溶液得到无对苯二甲酸基本上干燥的固体的隔离提供。

公开(公告)号：EP1791800A2

公开(公告)日：2007-06-06

申请号：EP05792914.3

申请日：2005-08-29

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： WONDERS, Alan, George ,  LIN, Robert ,  VREEDE, Marcel ,  PARTIN, Lee, Reynolds ,  STRASSER, Wayne, Scott

IPC: C07B33/00 ,  C07C51/21 ,  C07C51/235 ,  B01J19/24 ,  B01J10/00

CPC classification number: B01J8/1872 ,  B01J8/1836 ,  B01J8/22 ,  B01J19/006 ,  B01J2208/0015 ,  C07C51/21 ,  C07C51/235 ,  C07C51/265 ,  C07C63/26

Abstract: Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

Abstract translation: 公开了一种用于更有效和经济地进行可氧化化合物的液相氧化的优化方法和装置。 这种液相氧化在气泡塔反应器中进行，其在相对低的温度下提供高效反应。 当氧化的化合物是对二甲苯并且来自氧化反应的产物是粗对苯二甲酸（CTA）时，可以通过更经济的技术将这种CTA产物纯化和分离，如果CTA通过常规的高温 氧化过程。

公开(公告)号：EP1758846A1

公开(公告)日：2007-03-07

申请号：EP04811207.2

申请日：2004-11-16

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： PARKER, Kenny, Randolph ,  LIN, Robert

IPC: C07C51/42 ,  B01J31/40 ,  B01D33/06

CPC classification number: C07C51/47 ,  B01D33/073 ,  B01D33/60 ,  B01D33/66 ,  B01J31/4023 ,  C07C51/42 ,  C07C51/48 ,  Y02P20/52 ,  Y02P20/584 ,  C07C63/00 ,  C07C63/06 ,  C07C63/26

Abstract: A process is disclosed that relates to the recovery of a metal catalyst from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves recovery of a metal catalyst from an oxidizer purge stream through the use of a pressure filter, the combining of water with a mother liquor to recover the metal catalyst and then subjecting an aqueous mixture so formed to a single stage extraction with an extraction solvent to produce an extract stream comprising organic impurities and a raffinate stream comprising the metal catalyst.