Photocatalyst-binder compositions
First Claim
Patent Images
1. A composition comprising:
- photocatalytic particles responsive to incident light and having an average diameter of about 100 nm or less; and
a binder within which the photocatalytic particles are dispersed, the binder comprising no more than 15% oxidizable carbon and transmitting, at a thickness of 1 μ
m, a substantial portion of incident light of at least one wavelength capable of activating the photocatalyst;
wherein the composition forms an adherent film when applied to a surface.
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Abstract
A photocatalyst composition containing a substantially non-oxidizable binder which allows large amounts of photocatalytic particles to be adhered to a surface. Upon application to a surface, the composition dries or cures to form an adherent, abrasion-resistant, thermostable, and photocatalytic coating.
70 Citations
21 Claims
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1. A composition comprising:
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photocatalytic particles responsive to incident light and having an average diameter of about 100 nm or less; and a binder within which the photocatalytic particles are dispersed, the binder comprising no more than 15% oxidizable carbon and transmitting, at a thickness of 1 μ
m, a substantial portion of incident light of at least one wavelength capable of activating the photocatalyst;wherein the composition forms an adherent film when applied to a surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A composition comprising:
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photocatalytic particles responsive to incident light and having an average diameter of about 100 nm or less; and a binder within which the photocatalytic particles are dispersed, the binder comprising hydrated silica, hydrated alumina, or mixtures thereof, wherein the composition forms an adherent film when applied to a surface. - View Dependent Claims (10)
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11. A composition comprising:
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photocatalytic particles responsive to incident light and having an average diameter of about 100 nm or less; and a transparent, substantially non-oxidizable binder within which the photocatalytic particles are dispersed; wherein the composition forms an adherent film when applied to a surface. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A composition comprising:
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photocatalytic particles responsive to incident light and having an average surface area of at least about about 30 m2 /g; and a binder within which the photocatalytic particles are dispersed, the binder comprising no more than 15% oxidizable carbon and transmitting, at a thickness of 1 μ
m, a substantial portion of incident light of at least one wavelength capable of activating the photocatalyst;wherein the composition forms an adherent film when applied to a surface. - View Dependent Claims (19)
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20. A composition comprising:
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photocatalytic particles responsive to incident light and having an average surface area of at least about about 30 m2 /g; and a transparent, substantially non-oxidizable binder within which the photocatalytic particles are dispersed; wherein the composition forms an adherent film when applied to a surface. - View Dependent Claims (21)
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Specification