Abstract: The process includes applying a first composition on at least the portion of a siliceous substrate and subsequently applying a second composition on at least a portion of the first composition. The first composition includes an amine-reactive organosilane compound that is at least partially hydrolyzed. The second coating composition includes at least one of an amino-functional silane or cyclic azasilane and a condensation-curable polyorganosiloxane having divalent units represented by formula (I). The use of the first composition to improve the durability of the second composition, a kit including the first composition and the second composition, and a coated article made by the process are also described.

Abstract: A curable composition including: at least one polyorganosiloxane including at least one hydrosilyl moiety (in certain embodiments, two different polyorganosiloxanes); at least one silane including hydrolyzable functionality; and at least one base selected from an amidine, a guanidine, a phosphazene, a proazaphosphatrane, and a combination thereof; a method of coating such curable composition; and an article having a substrate surface with a coating formed from such method.