Other Definitions
imide (dict)
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ImideIn organic chemistry, imide is a functional group consisting of two carboxylic acid groups (or one dicarboxylic acid) bound to a primary amine or ammonia. Imides are generally prepared directly from ammonia or the primary amine, and the either the acid(s) or their acid anhydrides. The structure of imide is as shown to the left. In chemical industry, many imides are monomers used to make polyimides. The imides most commonly used for this are based on aromatic dicarboxylic acids of moderately high molecular weight. Such imides contain a heterocyclic ring, shown to the right. Another important imide is phthalimide, the heterocyclic imide of phthalic acid. It is an intermediate in the preparation of phthalocyanine dyes.
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