Heat-reflecting glass and method for manufacturing the same

Claim 1

A heat-reflecting glass manufactured by the method of claim

Claim 4

A method of producing a heat-reflecting galss, which comprises the steps of dissolving in an organic solvent selected from the group consisting of alcohols, acetone, esters, alicylic compounds and aromatic compounds a first compound capable of forming metallic palladium on heating, a second compound capable of forming metallic gold on heating, and a third compound capable of forming on heating a metallic oxide having a refractive index higher than that of the glass, the proportion of the combined first and second compounds and the third compound in the solution being from 2:98 to 60:40, by weight, calculated as combined metallic palladium and gold and as metallic oxide, respectively, the concentration of the first compound being at least 0.4 g/l, calculated as metallic palladium, and the concentration of the second compound being 0.1 to 20 times, by weight, the concentration of the first compound, calculated as metallic palladium and metallic gold, respectively; coating the surface of a glass substrate With the solution; and heating the coated glass to a temperature sufficient to decompose the first and second compounds until a light-transmissive film having a thickness of about 100 A to 1,500 A and consisting essentially of a matrix of the metallic oxide and colloidal particles of the metallic palladium and metallic gold uniformly dispersed in the metallic oxide matrix in a microscopically divided state is formed on the substrate.