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US 8,283,277 B2Granted
Photoactive TiO2 in coating materials
AssigneeBASF SE
InventorsAlexandra Seeber, Götz-Peter Schindler, Katrin Freitag, Ekkehard Jahns, Antonino Raffaele Addamo, Frank Kleine Jäger, Dirk Klingler
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Abstract
The present invention relates to a coating material comprising (A) at least one binder as component (A) and (B) at least one photocatalytically active particle comprising a core composed of at least one first substance having a diameter of 0.1 to 1 μm and at least one envelope at least partly surrounding the core and composed of at least one second substance having an average layer thickness of 0.1 to 10 nm as component (B).
Claims18
A coating material comprising
- (A) at least one binder as component (A) and
- (B) at least one photocatalytically active particle comprising a non-porous core comprising at least one metal- or semimetal oxide having a diameter of 0.1 nm to 1 μm and at least one porous envelope at least partly surrounding the core and comprising at least one further metal- or semimetal oxide having an average layer thickness of 0.1 to 10 nm as component (B), wherein the ratio of the proportion of metal or semimetal in the envelope in atom percent to the proportion of metal or semi-metal in the core in atom percent is 2 to 80.
Dependencies are inferred from the claim text.