Polymeric materials
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United States of America Patent
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Sep 25, 2018
Grant Date -
Dec 17, 2015
app pub date -
Jan 13, 2014
filing date -
Jan 23, 2013
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Abstract
(A) a polymer composition (especially a polyester composition) which includes a compound of tungsten and oxygen (especially tungsten oxide particles) and an additional additive, wherein said additional additive is selected from an acetaldehyde scavenger and a colourant, wherein when said polymer composition includes an acetaldehyde scavenger, said polymer composition includes at least 10 ppm (suitably at least 25 ppm, preferably at least 50 ppm) of said acetaldehyde scavenger and when said polymer composition includes a colourant, said polymer composition includes at least SOpprh (suitably at least 75 ppm, preferably at least 100 ppm) of said colourant, wherein: preferably said article is a preform for a container; or (B) a sheet comprising a polymer composition (especially a polyester, polycarbonate or polyolefin composition) which includes a compound of tungsten and oxygen (especially tungsten oxide particles), wherein said sheet has a width of at least G.3 m.
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