Patent ID: 8304085

Claim:
An article of manufacture comprising (i) at least one metal foil substrate having a thickness of 10 to 200 μm; (ii) a coating layer on at least a portion of at least one side of the metal foil substrate wherein the coating layer comprises: (a) a condensation cured silicone resin composition comprising a cured product of a one-part silicone composition comprising: (A) a condensation curable silicone resin having the formula: (R 1 R 2 2 SiO 1/2 ) w (R 2 2 SiO 2/2 ) x (R 2 SiO 3/2 ) y (SiO 4/2 ) z wherein R 1 is a C 1 to C 10 hydrocarbyl group or a C 1 to C 10 halogen-substituted hydrocarbyl group, both free of aliphatic unsaturation, R 2 is R 1 , —H, —OH, or a hydrolysable group, and w has a value of from 0 to 0.8, x has a value of from 0 to 0.6, y has a value of from 0 to 0.99, z has a value of from 0 to 0.35, the sum of y+z is 0.2 to 0.99, and the sum of w+x is zero or 0.01 to 0.80, with the proviso that silicone resin (A) has an average of at least two silicon-bonded hydrogen atoms, or at least two silicon-bonded hydroxy groups, or at least two silicon-bonded hydrolysable groups per molecule; optionally (B) a cross-linking agent having the formula R 7 q SiX 4-q , wherein R 7 is C 1 to C 8 hydrocarbyl group or C 1 to C 8 halogen-substituted hydrocarbyl group, X is a hydrolysable group, and q is 0 or 1; and (C) a condensation catalyst; and (b) silica nanoparticles wherein the one-part silicone composition is prepared by a method comprising adding the silica nanoparticles during the manufacture of the condensation curable silicone resin (A), the method comprising adding a hydrolysable precursor of the condensation curable silicone resin of the formula (R 1 R 2 2 SiO 1/2 ) w )R 2 2 SiO 2/2 ) x (R 2 SiO 3/2 ) y (SiO 4/2 ) z with the condensation catalyst (C) to a mixture of water and colloidal dispersion of the silica nanoparticles in a polar solvent to give the one-part silicone composition.