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 > Aldehyde reactant > Patents

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Class Information
Number: 562/889
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 > Aldehyde reactant
Description: Processes wherein an aldehyde reactant is used.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
6320083	Process for making aromatic aldehydes using ionic liquids	Nov. 20, 2001
6303827	Process for making aromatic aldehydes	Oct. 16, 2001
6222070	Method for reducing EDA in acetic anhydride production	Apr. 24, 2001
5214205	Process for the preparation of acetic anhydride from methyl formate	May. 25, 1993
5113016	Manufacture of phthaloyl chlorides	May. 12, 1992
5095143	Method for increasing the efficiency of liquid phase oxidation reactions	Mar. 10, 1992
4529550	Hydrolysis of anhydride in the production of C.sub.5 -C.sub.9 saturated aliphatic monocarboxylic acids	Jul. 16, 1985
4252983	Production of acetic anhydride and acetic acid from acetaldehyde	Feb. 24, 1981