AC-32 is a solid di-anhydride with 2 trimellitic anhydride groups attached to an aromatic cyclic backbone. AC-32 provides higher aromatic content to epoxy cured systems resulting in superior heat resistance, higher Tg and lower moisture permeability. AC-32 also imparts toughness which improves vibration dampening as well as enhanced thermal shock resistance. AC-32 blends easily with our other liquid anhydrides (i.e. MTHPA, MHHPA, METH-E). The resulting mixtures remain liquid at room temperature. AC-32 is mainly used as a curing agent for epoxy resins for filament winding, powder coating and pultrusion. Coatings made w/AC-32 excel in wet strength retention and abrasion resistance.