Use of particulate titanium dioxide to reduce the transmission of radiation in the near infrared

摘要

The use of a particulate material in a polymer article to reduce the transmission of near infrared radiation and to allow the transmission of visible light through the article, whereby - the particulate material is based on crystalline titanium dioxide, that is, containing TiO2, in the crystalline form of anatase and / or rutile, - the particles of the particulate material are coated with an organic and / or inorganic coating layer, - at least 20% by weight of the particles of the particulate material have a particle size of at least 400 nm and at most 1000 nm, and - at least 1.5% by weight and at most 40% by weight of the particles of the particulate material have a particle size of less than 400 nm and at minus 280 nm.