Multi-layer coatings
AssigneeEnki Technology, Inc.
InventorsSina Maghsoodi, Brenor L. Brophy, Ze'ev R. Abrams, Peter R. Gonsalves
Life of this patent
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Abstract
Disclosed herein are coating materials and methods for applying a top-layer coating that is durable, abrasion resistant, highly transparent, hydrophobic, low-friction, moisture-sealing, anti-soiling, and self-cleaning to an existing conventional high temperature anti-reflective coating. The top coat imparts superior durability performance and new properties to the under-laying conventional high temperature anti-reflective coating without reducing the anti-reflectiveness of the coating. Methods and data for optimizing the relative thickness of the under-layer high temperature anti-reflective coating and the top-layer thickness for optimizing optical performance are also disclosed.
Claims30
A coated article, comprising:
- a substrate;
- a first coating on at least one side of the substrate;
- and
- a second coating applied on top of the first coating, wherein the second coating is formed by curing a dried film of a sol comprising a polysilsesquioxane;
- wherein the coated article has at least one of an anti-reflective property, a hydrophobic property, an oleophobic property and an abrasion resistant property, and wherein the polsilsesquioxane has the formula:
- [RSi(OH)2O0.5]a[RSiO1.5]b[RSi(OH)O]c[R′Si(OH)2O0.5]m[R′SiO1.5]n[R′Si(OH)O]p[SiO2]x[Si(OH)O1.5]y[Si(OH)2O]z[Si(OH)3O0.5]q
- wherein R is independently hydrogen or a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C1 to C10 hydroxyalkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C2 to C20 heteroaryl group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted carboxyl group, a substituted or unsubstituted glycidylether group, a hydroxyl group, or a combination thereof;
- wherein R′ is a fluorine substituted C1 to C10 alkyl group, a fluorine substituted C3 to C20 cycloalkyl group, a fluorine substituted C1 to C10 hydroxyalkyl group, a fluorine substituted aryl group, a fluorine substituted C2 to C20 heteroaryl group, a fluorine substituted C2 to C10 alkenyl group, a fluorine substituted carboxyl group, a fluorine substituted glycidylether group, or a combination thereof;
- wherein 0<a,b,c,x,y,z,q<0.9, 0<m,n,p<0.9;
- and
- wherein a+b+c+m+n+p+x+y+z+q=1.
A coated article, comprising:
- a substrate;
- a first hydrophilic coating on at least one side of the substrate;
- and
- a second coating applied on top of the first hydrophilic coating, wherein the second coating is formed by curing a dried film of a sol comprising a polysilsesquioxane;
- wherein the coated article has at least one of an anti-reflective property, a hydrophobic property, an oleophobic property and an abrasion resistant property;
- and
- wherein the reduction in absolute solar weighted transmission (TAM) after 1000 strokes of abrasion testing according to specification EN1096.2 is less than 1%;
- and wherein the polsilsesquioxane has the formula:
- [RSi(OH)2O0.5]a[RSiO1.5]b[RSi(OH)O]c[R′Si(OH)2O0.5]m[R′SiO1.5]n[R′Si(OH)O]p[SiO2]x[Si(OH)O1.5]y[Si(OH)2O]z[Si(OH)3O0.5]q
- wherein R is independently hydrogen or a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C1 to C10 hydroxyalkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C2 to C20 heteroaryl group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted carboxyl group, a substituted or unsubstituted glycidylether group, a hydroxyl group, or a combination thereof;
- wherein R′ is a fluorine substituted C1 to C10 alkyl group, a fluorine substituted C3 to C20 cycloalkyl group, a fluorine substituted C1 to C10 hydroxyalkyl group, a fluorine substituted aryl group, a fluorine substituted C2 to C20 heteroaryl group, a fluorine substituted C2 to C10 alkenyl group, a fluorine substituted carboxyl group, a fluorine substituted glycidylether group, or a combination thereof;
- wherein 0<a,b,c,x,y,z,q<0.9, 0<m,n,p<0.9;
- and
- wherein a+b+c+m+n+p+x+y+z+q=1.
Dependencies are inferred from the claim text.