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Class Information
Number:
562/896
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
> Vapor phase
Description:
Processes wherein the dehydration is conducted in vapor phase.
Patents under this class:
Patent Number
Title Of Patent
Date Issued
4857239
Process for the synthesis of (math)acrylic anhydrides
Aug. 15, 1989
4737318
Recovery of acetic anhydride
Apr. 12, 1988
3978120
Method for the production of alicyclic anhydrides
Aug. 31, 1976
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