Dew resistant coatings
First Claim
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1. A dew-resistant coating comprising at least about 75% by weight of elongate silica particles having an aspect ratio greater than 1.
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Abstract
The present invention relates to dew resistant coatings and articles having the dew resistant coating adhered thereto. The dew resistant coatings comprise elongate silica particles. These coating are useful on articles or surfaces used in outdoor applications and articles and surfaces used in moist indoor environments.
135 Citations
75 Claims
- 1. A dew-resistant coating comprising at least about 75% by weight of elongate silica particles having an aspect ratio greater than 1.
- 24. A retroreflective article comprising a substrate and a coating provided on at least a portion of a surface of the substrate, the coated portion being retroreflective and the coating comprising elongate silica particles having an aspect greater than 1.
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26. The retroreflective article of 25 wherein the coated surface is dew resistant as evaluated by measuring its water contact angle.
- 52. A transparent article comprising a transparent substrate and a transparent dew-resistant coating provided on at least a portion of a surface of the substrate, the coating comprising at least about 95% by weight of elongate silica particles having an aspect ration of at least 1.
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66. A method of imparting dew-resistance to a retroreflective article, the method comprising:
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providing a retroreflective article having a retroreflective surface;
preparing a coating composition comprising elongate silica particles having an aspect ratio greater than 1;
applying the coating composition to at least a portion of the surface of the retroreflective article; and
heating the coating composition to form a dew-resistant coating. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74, 75)
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Specification