Keras
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Oleophobic coatings composition
Hey,
does anyone really know what's inside the oleophobic coatings used to ‘temper’ smartphone screens against fingerprints?
I vaguely get they’re fluorine based, but not sure exactly of anything beyond this point. I wonder if they could be easily synthesised, given they
don’t seem to be available in Europe (I had to order a vial from Amazon US and ask someone traveling to Europe to carry it for me).
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bnull
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Not exactly synthesise but you can mix your own. The patents are very vague on the percentages and it would be a long series of trials to find the
best proportions. But it can be done.
Patent US9382441B2 states that "[t]he present disclosure provides a hydrophobic and oleophobic coating composition, which comprises the following
components based on weight percentage: 0.1-15% of a fluorosiloxane, 1-30% of a polyacrylic resin, 0.1-15% of a silane coupler, 33-98% of an organic
solvent, and 0.05-15% of an acid."
The coatings are based on a fluorosiloxane, the identity of which varies "[a]ccording to certain embodiments" and are easier bought than synthesised.
Take a look at the catalogue of Nanjing SiSiB Silicones Co., Ltd.; they have both the fluorosiloxane and the silane coupler. As for the rest, there's a huge chance you have both
the acid and the organic solvent, and the resin you can find almost anywhere.
Quod scripsi, scripsi.
B. N. Ull
P.S.: Did you know that we have a Library?
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Keras
National Hazard
Posts: 775
Registered: 20-8-2018
Location: (48, 2)
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Quote: Originally posted by bnull  | Not exactly synthesise but you can mix your own.
Take a look at the catalogue of Nanjing SiSiB Silicones Co., Ltd.; they have both the fluorosiloxane and the silane coupler. As for the rest, there's a huge chance you have both
the acid and the organic solvent, and the resin you can find almost anywhere. |
Wow. Thanks for that. Will definitely have a look.
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