COATING COMPOSITION CONTAINING PHOTOCATALYST COATED WITH APATITE, AND RADIANT HEATING SYSTEM CONTAINING SAID COMPOSITION Russian patent published in 2013 - IPC C09D7/12 

FIELD: chemistry.

SUBSTANCE: invention relates to photocatalytic coating compositions. The coating composition contains 5-20 wt % photocatalyst selected from titanium dioxide, zinc oxide, zirconium oxide, tin oxide, vanadium trioxide and combinations thereof, which is coated with hydroxyapatite, 5-15 wt % silicon alkoxide-based binder, 1-5 wt % acrylic emulsion, 0.1-1 wt % thickener which is xanthane gum, and 64-85 wt % water. The degree of coverage of the photocatalyst by hydroxyapatite ranges from 5 to 36%, the average diameter of particles of the photocatalyst coated with hydroxyapatite ranges from 1 to 250 nm. Disclosed is a radiant heating system containing said composition. The radiant heating system consists of a heating layer 1, a substrate 2, a heat-radiating layer 3, a heat-insulating layer 4, a non-uniform layer 5 which increases radiating power of the system, and a photocatalytic coating layer 6. Methods of producing radiating heating systems are described.

EFFECT: preventing separation of the photocatalyst from the substrate, increasing impurity adsorption capacity, which provides efficient decomposition of impurities by the photocatalyst; the radiating heating system has deodorising and antibacterial properties.

15 cl, 20 dwg, 4 tbl, 4 ex