Water-based paints use acrylic resins. But the resins are carried to the substrate using water — unlike urethane auto paint which uses a solvent to carry the acrylic resin to the substrate. Water-based paint can be used for complete paint jobs, or to produce decorative graphics and highlights on pre-painted cars. Water-based paints have the same color range as urethane paints.
Water-Based Paints Are Non-Toxic
Water-based paints only produce water vapor while they are curing, unlike urethane paints which release volatile organic compounds that are toxic to humans and the environment. Urethane-based paints and water-based paints are the same are the same in many ways, but they have different carrying agents and binders. This is what makes then react differently to similar conditions.