The invention discloses a high and low temperature general type automobile finish paint and a preparation method thereof, and the high and low temperature general type automobile finish paint comprises the following components by
mass: 10-20 parts of a water-based self-crosslinking modified acrylic
emulsion, 3-20 parts of water-based hydroxy
acrylic resin, 0-15 parts of an acrylic
polyurethane copolymer dispersion, 0-15 parts of a water-based
acrylic resin emulsion, 0-15 parts of a water-based
acrylic resin emulsion, 0-15 parts of a water-based acrylic resin emulsion, and 0-15 parts of a water-based acrylic resin emulsion. 5-15 parts of a water-based
polyester secondary dispersion, 1-5 parts of high-activity amino resin and 0-5 parts of water-dispersed low-temperature cured blocked
isocyanate; the automobile finish paint further comprises an additive, a functional auxiliary agent, a
solvent and a
pigment. The
coating disclosed by the invention can be simultaneously applied to the vehicle body and the exterior decoration, so that collinear production can be realized, the turnover efficiency of the vehicle body and the exterior decoration is improved, the
coating efficiency is improved, the
coating cost is saved, and the productivity is fully utilized; the same coating is used for the automobile body and the exterior decoration, so that the color stability is easier to achieve, and the
color difference between the high-temperature coating and the low-temperature coating is avoided; product SKU is reduced, and efficient
inventory management is facilitated; and meanwhile, high-temperature and low-temperature products are compatible, a product window is wider, and customer construction is facilitated.