| abstract |
(57) [Summary]nA coating composition comprising a film-forming binder and a volatile liquid carrier for the binder, wherein the binder comprises: (a) an alkyl methacrylate, an alkyl acrylate (each alkyl group having 1 to 12 carbon atoms), Nyl methacrylate, isobornyl acrylate, hydroxyalkyl methacrylate, hydroxyalkyl acrylate (each alkyl group has 1 to 4 carbon atoms), acrylic polymer comprising a polymerized monomer selected from the group consisting of styrene and any mixture thereof, (B) alkyl methacrylates, alkyl acrylates (each alkyl group having 1 to 12 carbon atoms), isobornyl methacrylate, isobornyl acrylate, hydroxyalkyl methacrylate, Acrylosilane comprising a polymerized monomer selected from the group consisting of roxyalkyl acrylates (each alkyl group having 1 to 4 carbon atoms), styrene and any mixture thereof, and an ethylenically unsaturated hydroxy-functional acrylosilane monomer A polymer, and (C) an organic isocyanate. The clear coating has improved resistance to abrasion and acid corrosion when exposed to natural weather conditions. |