| abstract |
The present invention provides a powder composition comprising a) alkali metal tungsten bronze, b) tungsten oxide, and c) particles of tungsten metal, a process for preparing the powder composition, and for heat shielding the polymeric material or article in the form of a dispersion or Or to increase the heat introduction of near-infrared in a process selected from laser welding of plastics, near-infrared curing of coatings, drying of printing inks, fixing of ink toner to substrates, heating of plastic preforms, laser marking of plastics or paper. It relates to the use of the powder composition. |