Method of making a reflective coated glass article

Abstract

A method of making a reflective coated glass article includes providing a glass substrate. A first gaseous mixture is formed. The first gaseous mixture includes a silane compound and inert gas. The first gaseous mixture is delivered to a location above a major surface of the glass substrate to deposit a first coating layer directly on the major surface of the glass substrate. The first coating layer is deposited at a thickness of 5-50 nm. A second gaseous mixture is formed. The second gaseous mixture includes a silane compound, a radical scavenger and molecular oxygen. The second gaseous mixture is delivered to a location above the first coating layer. A second coating layer is deposited at a thickness of 5-50 nm over the first coating layer. The coated glass article exhibits a total visible light reflectance (Illuminant D65, ten degree observer) of 45% or more from a coated side of the coated glass article.

1 .- 26 . (canceled) 
     
     
         27 . A method of making a reflective coated glass article comprising:
 providing a glass substrate;   forming a first gaseous mixture comprising a silane compound and inert gas and delivering the first gaseous mixture to a location above a major surface of the glass substrate to deposit a first coating layer directly on the major surface of the glass substrate, wherein the first coating layer is deposited at a thickness of 5-50 nm; and   forming a second gaseous mixture comprising a silane compound, molecular oxygen, and a radical scavenger, and delivering the second gaseous mixture to a location above the first coating layer and depositing a second coating layer at a thickness of 5-50 nm over the first coating layer,   wherein the coated glass article exhibits a total visible light reflectance (Illuminant D65, ten degree observer) of 45% or more from the coated side of the coated glass article.   
     
     
         28 . The method of  claim 27 , wherein the glass substrate is a glass ribbon in a float glass manufacturing process. 
     
     
         29 . The method of  claim 27 , wherein the glass substrate is moving. 
     
     
         30 . The method of  claim 27 , wherein the first coating layer has a refractive index of 3.0 or more and the second coating layer has a refractive index of less than 1.6. 
     
     
         31 . The method of  claim 27 , wherein the first coating layer comprises elemental silicon and the second coating layer comprises silicon dioxide. 
     
     
         32 . The method of  claim 27 , further comprising feeding the first gaseous mixture through a first coating apparatus and discharging the first gaseous mixture from the first coating apparatus. 
     
     
         33 . The method off  claim 27 , wherein the thickness of the first coating layer is 10-30 nm. 
     
     
         34 . The method of  claim 27 , wherein the first gaseous mixture consists essentially of the silane compound and inert gas. 
     
     
         35 . The method of  claim 27 , wherein the second coating layer is deposited directly on the first coating layer and forms the outermost layer of the coating. 
     
     
         36 . The method of  claim 27 , wherein the second gaseous mixture comprises an oxygen-containing compound. 
     
     
         37 . The method of  claim 27 , wherein the thickness of the second coating layer is 10-50 nm. 
     
     
         38 . The method of  claim 27 , further comprising depositing a third coating layer over the second coating layer, wherein the third coating layer is deposited at a thickness of 50 nm or less. 
     
     
         39 . The method of  claim 27 , wherein the coated glass article exhibits a sheet resistance of greater than 1.0×10 10  ohm/sq. and/or wherein the coated glass article exhibits a total visible light transmittance (Illuminant D65, ten degree observer) of 40% or less from the coated side of the coated glass article. 
     
     
         40 . The method of  claim 27 , wherein the total visible light reflectance (Illuminant D65, ten degree observer) exhibited by coated glass article from the coated side of the coated glass article is 45-75% and/or wherein the coated glass article exhibits an a* value (Illuminant D65, ten degree observer) from the coated side of the coated glass article in the range of −6 to 6 and a b* value (Illuminant D65, ten degree observer) from the coated side of the coated glass article in the range of −6 to 6. 
     
     
         41 . The method of  claim 27 , wherein the first coating layer consists essentially of elemental silicon and/or wherein the second coating layer consists essentially of silicon dioxide. 
     
     
         42 . The method of  claim 32 , wherein the first gaseous mixture is formed prior to being fed through the first coating apparatus and/or further comprising feeding the second gaseous mixture through a second coating apparatus and discharging the second gaseous mixture from the second coating apparatus. 
     
     
         43 . The method of  claim 36 , wherein the oxygen-containing compound is water vapor. 
     
     
         44 . The method of  claim 38 , wherein the third coating layer is deposited directly on the second coating layer. 
     
     
         45 . The method of  claim 38 , wherein the third coating layer defines an outer surface of the coated glass article and/or wherein the third coating layer comprises silicon oxide and fluorine. 
     
     
         46 . The method of  claim 27 , wherein the coated glass article exhibits a total visible light transmittance (Illuminant D65, ten degree observer) of 20-40% from the coated side of the coated glass article and/or wherein the a* value is negative and the b* value is positive.