biodegradable resin products consisting essentially of a polymeric resin of starch , polyesters of polylactic acid and polycaprolactone . in admixture with the resin is a particulate vapor phase corrosion inhibitor selected from amine salts , ammonium benzoate , triazole derivatives , tall oil imidazolines , alkali metal molybdates , alkali dibasic acid salts , and mixtures thereof , and is present in an amount ranging from between about 1 % and 3 % by weight of the polymeric resin .