| abstract |
In an embodiment, a method for making an infrared radiation absorbing coating comprises: forming an ITO coating mixture comprising ITO and a first coating matrix, wherein the first coating matrix comprises the partial condensate of a silanol of the formula R n Si(OH) 4-n , where n equals 1 or 2, and wherein R is selected from a C 1-3 alkyl radical, a vinyl radical, a 3,3,3-trifluoropropyl radical, a gamma-glycidoxypropyl radical, and a gamma-methacryloxypropyl radical, wherein the ITO coating mixture is free of colloidal silica; forming a colloidal silica coating mixture comprising colloidal silica and a second coating matrix, wherein the second coating matrix comprises the partial condensate of a silanol of the formula R n Si(OH) 4-n , where n equals 1 or 2, and wherein R is selected from an alkyl radical of 1 to 3 inclusive carbon atoms, a vinyl radical, a 3,3,3-trifluoropropyl radical, a gamma-glycidoxypropyl radical, and a gamma-methacryloxypropyl radical; and mixing the ITO coating mixture with the colloidal silica coating mixture to form a combined mixture. The combined mixture does not comprise a precipitate visible to the unaided eye after 2 weeks without stirring. |