WATERBORNE ALUMINUM FORMULATION AND METHOD OF PREPARING THE SAME

Disclosed is a waterborne aluminum formulation, comprising aluminum powder, a passivation agent, and an acrylic resin. The invention also discloses a method of preparing a waterborne aluminum formulation comprising: (1) with high-speed stirring, adding a passivation agent, optionally an organic solvent, and optionally other additives, followed by adding aluminum powder to form a first premix; (2) sequentially adding an acrylic resin and water, followed by adding optionally other additives to form a second premix; and (3) with high-speed stirring, adding the second premix into the first premix. The invention further discloses a coating composition comprising the above waterborne aluminum formulation or the waterborne aluminum formulation prepared by the above method.