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US 8,475,581 B2Granted
De-polluting and self-cleaning epoxy siloxane coating
AssigneeCristal USA Inc.
InventorsJohn Stratton, Graham Goodwin
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Abstract
De-polluting, self-cleaning coating compositions are disclosed which comprise photocatalytic titanium dioxide and a binder comprising an epoxy siloxane polymer. The compositions produce durable, self-cleaning coatings with photocatalytic activity against pollutants in the air, such as NOx compounds.
Claims20
An organic solvent based composition for forming a self-cleaning, de-polluting single coating comprising:
- (i) photocatalytic titanium dioxide;
- (ii) a binder comprising an epoxy-functional silicon compound and an amino-functional silicon compound;
- (iii) one or more pigments;
- and
- (iv) an alkaline extender that is capable of neutralizing acidic species produced from degradation of NOx compounds;
- wherein the total pigment volume concentration of the organic solvent based composition is about 5% to about 70% by volume of the dry coating, and wherein the organic solvent based composition is substantially free of water, and wherein the organic solvent based composition is capable of effective application to a substrate as a single coating.
3 more elements
Dependencies are inferred from the claim text.