Patent ID: 7955430

Claim:
A coating material for coating facades and other building surfaces with a self-cleaning and self-regenerating surface, the coating material comprising: a binding agent in an amount of about 10 to about 30 weight percent of the coating material, the binding agent comprising silicone or silicate; at least one filler in an amount of about 2 to about 30 weight percent of the coating material, the at least one filler including particles having a size and/or a surface roughness of about 10 μm or less; a photocatalytically active agent in an amount of about 2 to about 15 weight percent of the coating material; and the coating material further comprising between about 0.1 and about 1 weight percent of a thickener; between about 5 and about 30 weight percent of another filler; between about 10 and about 20 weight percent of a pigment; between about 2 and about 8 weight percent of hydrophobization agent; about 4 weight percent or less of a solvent; about 0.8 weight percent or less of a preservative; and about 35 weight percent or less of water; wherein the binding agent is capable of decomposing due at least in part by a photocatalytic action of the photocatalytically active agent to form a microstructured, self-cleaning surface that photocatalytically reduces by about 0.1 μm or more per year in response to external weathering as per Deutsches Institut für Normung e.V. Europäische Norm International Organization for Standardization (DIN EN ISO) 2810, the decomposition being equivalent to chalking level 1 or less as per DIN EN ISO 4628-6.