Standard vinylester and polyester fne retardant resins have served the industrial and architectural markets well over the past years. New pressure has risen in both competitive materials and in the demands of code and insurance agencies that has necessitated a fresh review of the chemistry, formulation and application of our FR resins. The chemistry of halogenated polyester and vinylester resins and their relation to tire retardancy along with the role of additives is reviewed. Standards are
assessed starting with he NBS PS-15-69 historical standard and the current ASTMD 3982 along with code documents such as the NFPA-91, the UBC, the UMC, and the listing implementation programs of the ICBO and Factory Mutual. Keywords: vinylester, polyester, fire retardant resins, duct applications, codes, standards