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PPG Patents Coating with



Published April 5, 2006
Patent No. U.S. 7,005,472 B2
PPG Industries has obtained a patent for a multi-component composite comprising a basecoat deposited from a pigmented composition and a composition applied over at least a portion of the basecoat. The composition is formed from components comprising at least one polysiloxane comprising at least one reactive functional group; at least one reactant comprising at least one functional group that is reactive with at least one functional group selected from at least one reactive functional group of the at least one polysiloxane and at least one functional group of at least one reactant; and a plurality of particles selected from inorganic particles, composite particles, and mixtures thereof; wherein each component is different,wherein at least one reactive functional group of at least one polysiloxane is substantially nonreactive with the particles,wherein a retained scratch resistance value of the composition when cured is greater than a retained scratch resistance value of a composition that does not contain the plurality of particles wherein each component is different, and wherein the composition when cured has an initial scratch resistance value such that after scratch testing greater than 40% of the initial 20° gloss is retained.


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