Coated substrates
First Claim
Patent Images
1. A photocatalytically active coated substrate comprising a glass substrate having a photocatalytically active titanium oxide coating on one surface thereof, wherein the photocatalytically active titanium oxide coating has a thickness of 20 nm or less and the coated surface of the substrate has a photocatalytic activity of greater than 5×
- 10−
3 cm−
1min−
1 and the coated substrate has a visible light reflection measured on the coated side of 20% or lower.
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Abstract
A coated substrate, especially a glass substrate, such coated substrate having high photocatalytic activity and low visible light reflection as well as being highly abrasion resistant. Preferably, the coating is a titanium oxide coating, the photolytic activity is greater than 5×10−3 cm−1min−1, and coating side visible light reflection is 35% or lower.
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Citations
19 Claims
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1. A photocatalytically active coated substrate comprising a glass substrate having a photocatalytically active titanium oxide coating on one surface thereof, wherein the photocatalytically active titanium oxide coating has a thickness of 20 nm or less and the coated surface of the substrate has a photocatalytic activity of greater than 5×
- 10−
3 cm−
1min−
1 and the coated substrate has a visible light reflection measured on the coated side of 20% or lower. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19)
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16. A durable photocatalytically active coated glass comprising a glass substrate having a coating on one surface thereof, said coating comprising an alkali metal ion-blocking underlayer and an outer photocatalytically active titanium oxide layer, wherein the coated surface of the substrate is durable to abrasion such that the coated surface remains photocatalytically active after it has been subjected to 300 strokes of the European standard abrasion test, wherein the coated glass has a visible light reflection measured on the coated side of 20% or lower, and wherein the photocatalytically active titanium oxide layer has a thickness of 20 nm or lower and the coated surface of the glass has a photocatalytic activity of greater than 8×
- 10−
3 cm−
1min−
1.
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17. A coated glass comprising a glass substrate having a photocatalytically active titanium oxide coating on one surface thereof, wherein the photocatalytically active titanium oxide coating has a thickness of 20 nm or less and the coated surface of the glass has a photocatalytic activity of greater than 8×
- 10−
2 min−
1 and in that the coated glass has a visible light reflection measured on the coated side of less than 20%.
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Specification