Properties and Uses of Adipic Acid Dihydrazide (ADH)

Also known as dihydrazide, the pure product is a white crystal, easily soluble in water, toxic. Mainly used as a curing agent for epoxy powder coatings and coating additives, metal deactivators, and other polymer additives as well as water treatment agents. A homobifunctional crosslinking reagent, specifically for aldehydes, forming relatively stable hydrazone linkages. It can be crosslinked with sodium hyaluronate for use as a protein drug carrier. It acts as a crosslinker in water emulsions and water-soluble polymers with diacetone acrylamide. It can also be used as an indoor formaldehyde adsorbent and as an intermediate raw material.

Usage: Adipic acid dihydrazide (ADH) is a high-melting-point powdered compound, produced by the reaction of organic acids with hydrazine. It can serve as a latent curing agent for epoxy resin (EP). The coating film of powder coatings prepared with the EP/SPH binder system exhibits excellent flexibility, water resistance, weather resistance, corrosion resistance, insulation properties, and decorative qualities. It is an indispensable latent curing agent both domestically and internationally, especially in the manufacturing of high-performance, fast-curing, heavy-duty anti-corrosion powders, as well as in fields such as petroleum pipelines, aerospace, and aviation fuel. It also shows highly satisfactory results in enhancing the strength of epoxy adhesive powders and fiberglass products. Particularly when combined with diacetone acrylamide (DAAM), it can be formulated into high-performance water-soluble coatings.