Crylcoat 1680-6 Carboxylated polyester resin Cytec Surface Specialties North America South and Central America Polyester Coatings >> Powder Coatings Powder coating Crylcoat™ 1680-6 is a highly reactive carboxylated polyester resin for use in 60/40 hybrid powder coatings. Formulations based on Crylcoat™ 1680-6 combine good flexibility and flow with high gloss. Crylcoat™ 1680-6 can be formulated with high levels of filler. Carboxylated polyester resin. Shows good flexibility, flow and high gloss. Used in hybrid powder coatings.