Fluororesin film and process for its production
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United States of America Patent
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Mar 6, 2012
Grant Date -
Oct 22, 2009
app pub date -
Jun 18, 2009
filing date -
Dec 22, 2006
priority date (Note) -
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Abstract
A fluororesin film, of which discoloration, a change in the visible light transmittance and a decrease in the mechanical strength can be suppressed for a long period of time even though it contains titanium oxide, the fluorescent film having a pigment dispersed in a fluororesin, which pigment are composite particles each comprising a particle containing titanium oxide, a first covering layer containing cerium oxide and a second covering layer containing silicon oxide in this order from the inside, wherein the amount of cerium oxide is from 5 to 30 parts by mass based on 100 parts by mass of titanium oxide, the amount of silicon oxide is from 5 to 60 parts by mass based on 100 parts by mass of titanium oxide, and the average particle size of the composite particles is from 0.15 to 3 μM; and a process for its production.
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