Abstract: An intumescent coating composition consisting of a binder system and a two-component intumescent package is described. Tannic acid (TA) and ammonium polyphosphate (APP) have exhibited sufficient characteristics to serve as char formers (via TA), blowing agents (via TA), and an acid source (via APP). Such compositions may be incorporated in epoxy and other resin-based coatings. The resulting composition should provide comparable intumescent performance in comparison to existing/available products.

Abstract: An intumescent composition based upon modifications to tannic acid (TA), including certain additives, is contemplated. Such compositions may be incorporated in epoxy and other resin-based coatings. The resulting composition produces a novel, lightweight, and extremely effective intumescent char having a density of 1.5 to 4.0 mg/cm3.

Abstract: An intumescent composition based upon modifications to poly acrylic acid (PAA), including certain additives, is contemplated. Such compositions may be incorporated in epoxy and other resin-based coatings. The PAA may be modified through the use of one or more mineralizing additives to promote char formation.