The recycling of polyethylene terephthalate (PET) is the most attractive method for PET waste management because it not only decreases the load on landfill space, but also provides opportunities for reducing the use of raw petrochemical products. Therefore, in this investigation, waste PET was glycolyzed using neopentyl glycol in the presence of 0.5% zinc acetate as a trans-esterification catalyst at 220℃. The water-borne alkyd was successfully synthesized through polyesterification of the glycolyzed PET with tall oil fatty acid, phthalic anhydride, pentaerythritol, isophthalic acid, benzoic acid and trimellitic anhydride. Furthermore, the water-borne alkyd-amino baking coatings were prepared from the water-borne alkyd based on waste PET and melamine formaldehyde resin curing agents and applied on tinplate. The water-borne alkyd-amino baking coatings exhibited overall good performance properties except for alkali resistance due to hydrolysis of ester bonds.