Anti-corrosive primer for iron and steel incorporating zinc dust pigment in an organic vehicle.
The more common types of binders for organic zinc-rich coatings include epoxy polyamide,
polyurethane, vinyl, and chlorinated rubber. Organic zinc-rich coatings often are used for touchup
and repair of defects and damaged areas in inorganic zinc-rich coatings because the organic
binder provides better adhesion than another coat of inorganic zinc-rich. Organic zinc-rich
coatings are more tolerant of surface preparation deficiencies than inorganic zinc-rich coatings.
They also are less likely to mud-crack, have less abrasion resistance, and have significantly lower
heat resistance (depending on binder type) than inorganic zinc-rich coatings