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Class Information
Number: 562/895
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 > Dehydration of two like or different molecules of carboxylic acid
Description: Processes which involve the dehydration of two like or different molecules of carboxylic acid.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7304182 |
Crystalline parahydroxybenzoic acid anhydride and process for preparing the same |
Dec. 4, 2007 |
| 7220881 |
Process for production of acid anhydride |
May. 22, 2007 |
| 7049467 |
Process for the manufacture of isobutyric anhydride |
May. 23, 2006 |
| 6646062 |
Production of improved polymers via the use of star cores |
Nov. 11, 2003 |
| 5824820 |
Process for the preparation of citraconic anhydride |
Oct. 20, 1998 |
| 5705683 |
Carbonylation of olefins |
Jan. 6, 1998 |
| 5606068 |
Acid anhydrides, their preparation and their use |
Feb. 25, 1997 |
| 5516735 |
Method for stabilizing rhodium compound |
May. 14, 1996 |
| 4874558 |
Polymer catalyzed synthesis of acid anhydrides |
Oct. 17, 1989 |
| 4830789 |
Process for producing carboxylic acid anhydrides |
May. 16, 1989 |
| 4595541 |
Process for the preparation of trifluoroacetic anhydride |
Jun. 17, 1986 |
| 4477382 |
Preparation of carboxylic acid anhydrides |
Oct. 16, 1984 |
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