Dew resistant coatings
AssigneeAvery Dennison Corporation
InventorsPradeep S. Iyer, Liviu Dinescu, Chia-Hsi Chu, Le Hoa Hong, Kai Li
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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 coatings are useful on articles or surfaces used in outdoor applications and articles and surfaces used in moist indoor environments.
Claims30
A dew-resistant coating for a retroreflective substrate, said coating comprising:
- at least about 75% by weight of elongate silica particles having an aspect ratio greater than 1;
- a surfactant;
- an organic binder wherein the organic binder comprises at least one hydrolysis product or at least one partial condensate of one or more silane compounds;
- and
- spherical silica particles having an average diameter of less than 50 nanometers;
- wherein the one or more silane compounds comprises cyclohexyltrimethoxysilane.
A dew-resistant coating for a retroreflective substrate comprising at least about 75% by weight of elongate silica particles having an aspect ratio greater than 1 and a surfactant wherein the coating comprises 15 to 25% by weight of an organic binder;
- wherein the organic binder comprises at least one hydrolysis product or at least one partial condensate of one or more silane compounds;
- and
- wherein the one or more silane compounds comprises cyclohexyltrimethoxysilane.
A dew-resistant coating for a retroreflective substrate, said coating consisting of:
- at least about 75% by weight of elongate silica particles having an aspect ratio greater than 1;
- a surfactant;
- and
- an organic binder wherein the organic binder comprises at least one hydrolysis product or at least one partial condensate of one or more silane compounds;
- wherein the one or more silane compounds comprises cyclohexyltrimethoxysilane.
Dependencies are inferred from the claim text.