USE OF PARTICULATE TITANIUM DIOXIDE FOR REDUCING THE TRANSMISSION OF NEAR-INFRARED RADIATION
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United States of America Patent
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Issued Date -
Aug 25, 2016
app pub date -
Oct 10, 2014
filing date -
Oct 11, 2013
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Abstract
Disclosed is the use of a particulate material in a polymer article, or a polymer composition containing the particulate material, in particular a masterbatch, as well as of a polymer film composition, for reducing the transmission of near-infrared radiation and for allowing transmission of visible light through the article, whereby i. the particulate material is based on crystalline titanium dioxide, ii. the particles of the particulate material are coated with an organic and/or inorganic coating layer, iii. at least 20% by weight of the particulate material particles have a particle size of at least 400 nm and at most 1000 nm, and iv. at least 1.5% by weight and at most 40% by weight of the particles in the particulate material have a particle size of less than 400 nm and at least 280 nm.
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