Silicone organic conformal coatings.

摘要

An ultraviolet radiation curable composition of a silicone resin containing phenyl and vinyl bearing siloxane units and having a degree of substitution of from 1.2 to 1.8, an organic mercaptan, an acrylate monomer, a photoinitiator and a free radical inhibitor are useful as conformal coatings for electronic printed circuit boards. These conformal coatings exhibit improved corrosion resistance, adhesion to printed circuit board substrates and thermal resistance.