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Class Information
Number: 562/888
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carboxylic acid anhydrides (i.e., compounds having the -c(=o)-o-c(=o)- group) > Processes of forming the -c(=o)-o-c(=o)- group
Description: Processes wherein the carboxylic acid anhydride group is formed.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427692 |
Process for preparation of 7-[.alpha.-amino (4-hydroxyphenyl) acetamido]-3-substituted-3-cephem-4-carboxylic acid |
Sep. 23, 2008 |
| 7417108 |
Process for production of 2,3,3',4'-biphenyltetracarboxylic dianhydride |
Aug. 26, 2008 |
| 7338918 |
Catalyst having a silver-vanadium oxide phase and a promoter phase |
Mar. 4, 2008 |
| 7294719 |
Synthesis of amino acid, N-carboxyanhydrides |
Nov. 13, 2007 |
| 7074957 |
Process for preparing (meth)acrylic anhydride |
Jul. 11, 2006 |
| 7049467 |
Process for the manufacture of isobutyric anhydride |
May. 23, 2006 |
| 6936734 |
Process for manufacturing unsaturated carboxylic acid anhydrides |
Aug. 30, 2005 |
| 6815555 |
Substituted phenol compounds useful for anesthesia and sedation |
Nov. 9, 2004 |
| 6753431 |
Production of mixed acid anhydride and amide compound |
Jun. 22, 2004 |
| 6730810 |
Anhydride stabilization |
May. 4, 2004 |
| 6696604 |
Addition of mineral acids or salts thereof to a TMA production process |
Feb. 24, 2004 |
| 6646062 |
Production of improved polymers via the use of star cores |
Nov. 11, 2003 |
| 6593495 |
Anhydride stabilization |
Jul. 15, 2003 |
| 6528683 |
Method for producing shell catalysts for the catalytic vapor-phase oxidation of aromatic hydrocarbons and catalysts obtained in such a manner |
Mar. 4, 2003 |
| 6469205 |
Method for oxidation of xylene derivatives |
Oct. 22, 2002 |
| 6465685 |
Method for oxidation of xylene derivatives |
Oct. 15, 2002 |
| 6346650 |
Method for making mixed high purity (meth)acrylic anhydrides |
Feb. 12, 2002 |
| 6288273 |
Method for producing shell catalysts for catalytic gas-phase oxidation of aromatic hydrocarbons |
Sep. 11, 2001 |
| 6222070 |
Method for reducing EDA in acetic anhydride production |
Apr. 24, 2001 |
| 6130257 |
Compositions of enantiomeric diacyl tartaric anhydrides and preparation thereof |
Oct. 10, 2000 |
| 5652336 |
Polymer-bound mixed carboxylic anhydrides as a stable form of activated carboxylic acids |
Jul. 29, 1997 |
| 5523481 |
Process for the preparation of dialkyl dicarbonates |
Jun. 4, 1996 |
| 5144067 |
Process for the coproduction of alkyl iodides and alpha-iodocarboxylic acids and/or anhydrides thereof |
Sep. 1, 1992 |
| 5113016 |
Manufacture of phthaloyl chlorides |
May. 12, 1992 |
| 4830789 |
Process for producing carboxylic acid anhydrides |
May. 16, 1989 |
| 4477382 |
Preparation of carboxylic acid anhydrides |
Oct. 16, 1984 |
| 4207255 |
Manufacture of very pure halonaphthalic acid anhydrides |
Jun. 10, 1980 |
| 4158671 |
Oxidation catalysts and process for preparing anhydride from alkanes |
Jun. 19, 1979 |
| 4132717 |
Enol lactone intermediate for the preparation of (1R,cis)-caronaldehydic acid |
Jan. 2, 1979 |
| 4080307 |
New additives for lubricants |
Mar. 21, 1978 |
| 3953481 |
Diacylium complexes of tetrahaloterephthalic acid |
Apr. 27, 1976 |
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