Abstract: A primer composition includes the reaction product of (a) a polyglycidyl ether of a hydroxy-functional material; and (b) an amino polyalkoxysilane. The reaction product, when hydrolyzed, comprises at least 6 silanol groups, such as at least 8 silanol groups, such as at least 10 silanol groups, such as at least 12 silanol groups.

Abstract: A coating includes a functional coating, such as a solar control coating having at least one metal layer. A topcoat is formed over at least a portion of the functional coating. The topcoat includes a first topcoat layer having a thickness in the range of 0.5 QWOT to 1.5 QWOT with respect to a reference wavelength of 550 nm and a first refractive index, and a second topcoat layer having a thickness in the range of 0.5 QWOT to 1.5 QWOT with respect to a reference wavelength of 550 nm and a second refractive index different from the first refractive index.