Flexible coating compositions having improved scratch resistance, coated substrates and methods related thereto

Certain embodiments of the present invention are directed to coating compositions comprising at least one reactive functional group-containing polysiloxane, at least one material comprising at least one functional group selected from at least one polyol group and at least one carbamate group, and at least one reactant comprising at least one functional group that is reactive with at least one functional group selected from the at least one functional group of the polysiloxane and the at least one functional group of at least one material. Other embodiments of the present invention are directed to cured coatings formed from the foregoing coating compositions. Further embodiments are directed to substrates coated with the aforementioned compositions. Embodiments of the present invention also are directed to methods for improving the scratch resistance of a polymeric substrate or polymer coated substrate. Coating compositions are provided which include a polysiloxane comprising at least one reactive functional group and at least one material comprising at least one reactive functional group. Also provided are multi-layer composite coatings formed from a basecoat deposited from a pigmented coating composition and a topcoat applied over the basecoat, the topcoat deposited from the aforementioned coating composition. A method for improving the scratch resistance of a coated substrate, as well as coated substrates also are provided. The compositions of the invention provide highly scratch resistant coatings, particularly highly scratch resistant color-plus-clearcoatings.