A protective coating composition for coating interior surfaces of beer, beverage, and food containers, as well as interior and exterior surfaces of can ends, comprises a polymeric binder of emulsion copolymerized ethylenic monomers in the presence of an unsaturated polyester dispersed into water with an aqueous dispersed epoxy-acrylic graft copolymer dispersant. The preferred polymeric binder comprises by weight between 0.1% and 40% unsaturated polyester, between 20% and 80% emulsion copolymerized ethylenic unsaturated monomers, and at least 20% dispersant, where the emulsion copolymerized monomers crosslink with the water dispersed unsaturated polyester.

Uma composição revestindo protetora para revestir superfícies interior da cerveja, da bebida, e dos recipientes do alimento, assim como superfícies interior e exteriores de extremidades da lata, compreende uma pasta polymeric do emulsion copolymerized monomers ethylenic na presença de um poliéster unsaturated dispersado na água com um dispersant epoxy-acrílico dispersado aqueous do copolymer do graft. A pasta polymeric preferida compreende por um peso entre 0.1% e o poliéster unsaturated de 40%, entre o emulsion de 20% e de 80% copolymerized monomers unsaturated ethylenic, e ao menos dispersant de 20%, onde o emulsion copolymerized a ligação transversal dos monomers com o poliéster unsaturated dispersado água.