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Class Information
Number: 562/414
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acids and salts thereof > Aromatic > Formation of carboxyl group by oxidation > Of aromatic compound > Alkyl side chain oxidized > Air, oxygen, or ozone oxidant > With recycle or recovery of reaction component
Description: Processes wherein components of the product of oxidation may be separated, further treated, and either recycled to the reaction chamber or recovered.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7608732 |
Optimized liquid-phase oxidation |
Oct. 27, 2009 |
| 7598415 |
Process for the preparation of p-toluic acid by liquid phase oxidation of p-xylene in water |
Oct. 6, 2009 |
| 7582793 |
Optimized liquid-phase oxidation |
Sep. 1, 2009 |
| 7569722 |
Process for removal of benzoic acid from an oxidizer purge stream |
Aug. 4, 2009 |
| 7556784 |
Optimized production of aromatic dicarboxylic acids |
Jul. 7, 2009 |
| 7504535 |
Optimized liquid-phase oxidation |
Mar. 17, 2009 |
| 7501537 |
Polycarboxylic acid production system employing oxidative digestion with reduced or eliminated upstream liquor exchange |
Mar. 10, 2009 |
| 7498002 |
Optimized liquid-phase oxidation |
Mar. 3, 2009 |
| 7498003 |
Optimized liquid-phase oxidation |
Mar. 3, 2009 |
| 7494641 |
Extraction process for removal of impurities from an oxidizer purge stream in the synthesis of carboxylic acid |
Feb. 24, 2009 |
| 7495125 |
Optimized liquid-phase oxidation |
Feb. 24, 2009 |
| 7491369 |
Oxidation system with internal secondary reactor |
Feb. 17, 2009 |
| 7485746 |
Staged countercurrent oxidation |
Feb. 3, 2009 |
| 7482482 |
Optimized liquid-phase oxidation |
Jan. 27, 2009 |
| 7470370 |
Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration |
Dec. 30, 2008 |
| 7468456 |
Azeotropic distillation process for separating acetic acid, methylacetate and water in the production of an aromatic carboxylic acid |
Dec. 23, 2008 |
| 7410632 |
Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
Aug. 12, 2008 |
| 7402694 |
Process for removal of benzoic acid from an oxidizer purge stream |
Jul. 22, 2008 |
| 7399882 |
Optimized liquid-phase oxidation |
Jul. 15, 2008 |
| 7390921 |
Optimized liquid-phase oxidation |
Jun. 24, 2008 |
| 7381836 |
Optimized liquid-phase oxidation |
Jun. 3, 2008 |
| 7381386 |
Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid |
Jun. 3, 2008 |
| 7371866 |
Preparation of aromatic and heteroaromatic carboxylic acids by catalytic ozonolysis |
May. 13, 2008 |
| 7371894 |
Optimized liquid-phase oxidation |
May. 13, 2008 |
| 7361784 |
Optimized liquid-phase oxidation |
Apr. 22, 2008 |
| 7358389 |
Oxidation system employing internal structure for enhanced hydrodynamics |
Apr. 15, 2008 |
| 7355068 |
Oxidation system with internal secondary reactor |
Apr. 8, 2008 |
| 7314954 |
System and method for recovering PTA mother liquid and purifying and regenerating of catalyst |
Jan. 1, 2008 |
| 7291270 |
Process for removal of impurities from an oxidizer purge stream |
Nov. 6, 2007 |
| 7285677 |
System and method for recovering CTA residues and purifying/regenerating catalyst |
Oct. 23, 2007 |
| 7282151 |
Process for removal of impurities from mother liquor in the synthesis of carboxylic acid using pressure filtration |
Oct. 16, 2007 |
| 7273559 |
Process for removal of impurities from an oxidizer purge stream |
Sep. 25, 2007 |
| 7238833 |
Production of aromatic carboxylic acids |
Jul. 3, 2007 |
| 7153480 |
Apparatus for and method of producing aromatic carboxylic acids |
Dec. 26, 2006 |
| 7135596 |
Method of removing iron contaminants from liquid streams during the manufacture and/or purification of aromatic acids |
Nov. 14, 2006 |
| 7060853 |
Method for increasing oxidation reactor production capacity |
Jun. 13, 2006 |
| 7049465 |
Process for energy recovery in processes for the preparation of aromatic carboxylic acids |
May. 23, 2006 |
| 7022307 |
Method for gas--solid contacting in a bubbling fluidized bed reactor |
Apr. 4, 2006 |
| 6949673 |
Process for producing carboxylic acids |
Sep. 27, 2005 |
| 6852879 |
Method of removing iron oxide deposits from the surface of titanium components |
Feb. 8, 2005 |
| 6765113 |
Production of aromatic carboxylic acids |
Jul. 20, 2004 |
| 6761860 |
Apparatus for the production of aromatic acids |
Jul. 13, 2004 |
| 6689903 |
Crystallization method for production of purified aromatic dicarboxylic acids |
Feb. 10, 2004 |
| 6642407 |
Production, purification and polymerization of aromatic dicarboxylic acids |
Nov. 4, 2003 |
| 6620966 |
Process for producing aromatic carboxylic acid |
Sep. 16, 2003 |
| 6521786 |
Process for the production of aromatic acids |
Feb. 18, 2003 |
| 6506931 |
Process for producing aromatic carboxylic acid |
Jan. 14, 2003 |
| 6500347 |
Process for recovering crystals from a slurry |
Dec. 31, 2002 |
| 6476257 |
Method for preparing aromatic carboxylic acids from alkylaromatics by liquid-phase oxidation |
Nov. 5, 2002 |
| 6448436 |
Integrated process for the production of 2, 6-naphthalene dicarboxylic acid |
Sep. 10, 2002 |
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