Epoxy adhesives amide-amine curing agents

The polyaddition reaction is the most commonly used type of reaction for the cure of epoxy resins. The curing agents used in this type of reaction have an active hydrogen compound, and they include amines, amides, and mercaptans. With this reaction mechanism, the most important curing agents for adhesives are primary and secondary amines containing at least three active hydrogen atoms and various di- or polyfunctional carboxylic acids and their anhydrides. 

The amine-reactive nitrile liquids are useful in formulating a modified hardener package through admixture with an amine, amidoamine or fatty poly-amide curing agent of choice (14). And novel elastomer-modified epoxy resin hardeners giving excellent reported adhesive properties have begun to appear in the marketplace (15). 

Reactive p. with amine values of 350-450 (polyamino amides) are used as curing agents in combination with epoxy resins (diglycidyl ether of bi-sphenol A) in - adhesives, castings and - coatings. Casting technology is mainly used in the electrical industry. 

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