IRASORB BITO, the blue Indium Tin Oxide** shows higher electrical conductivity and higher absorption in infrared light compared to the yellow version, which makes it useful for coatings, inks and polymeric films. The main uses of these films are for heat shielding on architectural and automotive glass, where they combine high transparency and low colour in the visible range with superior absorption properties in the infrared region. Irasorb BITO and BITOM40 are powders which can be easily dispersed in polymers during the extrusion or injection moulding process. They deagglomerate readily into nanoscale particles to enable transparent polymer films, sheets and plates to be formed. Although the BITO powder is of blue colour it has only very little influence on the final colour of polymers, coatings or inks. BITO has excellent IR absorbing properties, with its maximum IR absorption reached at 1100 nm. Low quantities of BITO are necessary to achieve high NIR absorption rates. In addition, BITO has the highest transparency of all IR absorbing materials.
