If the evaporation is fast, it could affect the flow and integrity of the paint. For paints with slow evaporation, brush application is commonly used, and for high evaporation spraying should be used. The second component in paint is the solvent. A solvent is a volatile liquid that dissolves the binder polymers and determines the viscosity of paint. The properties of the solvent affect the intended storage time, and the application mode of paint.
Solvents have three classes of solubility.
Solvents with the highest solubility can dissolve strongly hydrogenated bonds that consist of alcohols. Other solvents are classed based on their ability to dissolve moderately hydrogenated bonds consisting of esters and ethers, and poorly hydrogenated bonds including hydrocarbons. Paints typically contain two types of polymers. There can be no more than a small difference in the ranges of solubility of the two polymers. The range in the solubility of solvents is based on the range of the solubility of the polymers.