Multilayered hydrophobic window glass
AssigneeSaint-Gobain Vitrage
InventorsPascal Chartier, Marie-Jose Azzopardi, Nathalie Codazzi, Pierre Chaussade, Yves Naoumenko, Fabienne Gauthier, Olivier Guiselin
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Abstract
A window glass comprising a substrate made of glass, which is optionally covered, at least in part, by one or more layers and a hydrophobic-oleophobic, abrasion-resistant coating comprising an essentially mineral sublayer and a hydrophobic-oleophobic layer, wherein the density of the sublayer is equal to at least 80% of that of its constituent material.
Claims16
A window glass comprising a substrate made of glass that is optionally covered, over at least a part, by one or more layers, and a coating comprising an essentially mineral sublayer and directly bonded thereto, a hydrophobic-oleophobic layer wherein the density of the mineral sublayer is equal to at least 80% of that of its constituent material, and wherein the mineral sublayer is selected from the group consisting of:Al.sub.2 O.sub.3, Ga.sub.2 O.sub.3, SnO.sub.2, TiO.sub.2, Ta.sub.2 O.sub.5, Cr.sub.2 O.sub.3, ZrO.sub.2, Nb.sub.2 O.sub.5, In.sub.2 O.sub.3, Fe.sub.2 O.sub.3, CoO.sub.3, V.sub.2 O.sub.5, Y.sub.2 O.sub.3, TiN, SiO.sub.x, with x being between 0 and less than 2, and SiO.sub.p C.sub.q, with 1<p<2 and 0<q<1, and mixtures thereof.
A window glass according to claim 8 or claim 10, wherein the hydrophobic layer is a layer having a thickness between 10 and 50 .ANG..
A window glass comprising a substrate made of glass and a hydrophobic-oleophobic coating that is resistant to abrasion and comprising an essentially mineral sublayer and directly bonded thereto, a hydrophobic-oleophobic layer, wherein the contact angle of a drop on the coating, having been subjected to abrasion with 500 turns of a grinding wheel according to the standard ASTM D 1044-78, is greater than 60.degree., and wherein the mineral sublayer is selected from the group consisting of:
- Al.sub.2 O.sub.3, Ga.sub.2 O.sub.3, SnO.sub.2, TiO.sub.2, Ta.sub.2 O.sub.5, Cr.sub.2 O.sub.3, ZrO.sub.2, Nb.sub.2 O.sub.5, In.sub.2 O.sub.3, Fe.sub.2 O.sub.3, CoO.sub.3, V.sub.2 O.sub.5, Y.sub.2 O.sub.3, TiN, SiO.sub.x, with x being between 0 and less than 2, and SiO.sub.p C.sub.q, with 1<p<2 and 0<q<1, and mixtures thereof.
A window glass comprising a substrate made of glass, having a functional stacking whose last layer is an essentially mineral layer whose density is equal to at least 80% of its constituent material, with said last layer being covered, at least in part, by a hydrophobic and oleophobic layer, directly bonded thereto, and wherein the mineral sublayer is selected from the group consisting of:
- Al.sub.2 O.sub.3, Ga.sub.2 O.sub.3, SnO.sub.2, TiO.sub.2, Ta.sub.2 O.sub.5, Cr.sub.2 O.sub.3, ZrO.sub.2, Nb.sub.2 O.sub.5, In.sub.2 O.sub.3, Fe.sub.2 O.sub.3, CoO.sub.3, V.sub.2 O.sub.5, Y.sub.2 O.sub.3, TiN, SiO.sub.x, with x being between 0 and less than 2, and SiO.sub.p C.sub.q, with 1<p<2 and 0<q<1, and mixtures thereof.
Dependencies are inferred from the claim text.