Non-aqueous compositions of dispersed carbon-coated metal particles
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United States of America Patent
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Jun 7, 2016
Grant Date -
Apr 21, 2016
app pub date -
Oct 15, 2014
filing date -
Oct 15, 2014
priority date (Note) -
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Abstract
A non-aqueous composition contains dispersed carbon-coated metal particles in an organic diluent in an amount of at least 10 weight %. The dispersed carbon-coated metal particles have a median diameter equal to or less than 0.6 μm, and are dispersed using a particle dispersing agent that has a weight average molecular weight (Mw) of at least 2,000 and up to and including 100,000 and comprises nitrogen-containing units. The median diameter of the dispersed particles is determined using a dynamic light scattering method. Moreover, when the non-aqueous composition contains up to and including 25 weight % of the dispersed carbon-coated metal particles, it exhibits no visual settling when subjected to a settling test of at least 24 hours at 20° C. Such non-aqueous compositions can include photocurable components and are useful to prepare photocurable and photocured electrically-conductive patterns and layers in various articles, including touch screen devices having touch screen displays.
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