Diamine

For the ink company, see Diamine Inks Limited.

General structure of (primary) diamines. The primary amino groups (NH2) are marked blue,
R is a divalent organic radical (e.g. a para-phenylene group).

A diamine is an amine with two amino groups. Diamines are used as monomers to prepare polyamides, polyimides, and polyureas. The term diamine refers mostly to primary diamines, as those are the most reactive.

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