The uses for this product seem unlimited and revolutionary, IF this product is for real (and not the next asbestos).
Hydrophobic coatings and substances aren't all that new. The hard part about them is to make them last long term without requiring additional coatings.
Hydrophobic coatings are often applied to antenna covers (radomes) to minimize snow/ice buildup. But that only works above -10C and eventually runs off and needs to be reapplied.
The only permanent solution is bonding a thick film with tiny hairs to the surface which mimic lotus leaf and other hydrophobic natural surfaces. They usually incorporate PFPE ( perflouropolyether ) or other Teflon like chemicals.
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