Transparent self-healing omniphobic coatings
Processes for preparing oleophobic and hydrophobic coatings on a substrate. More particularly, the disclosure relates to omniphobic surface treatment of substrates such as glass, ceramic, glass-ceramic, and the like.
1. A fluoride ion-encapsulated functionalized fluoropolyhedral oligomeric silsesquioxane of the formula [1]
wherein each R A is R f or R p , provided that at least one R A is R p ; R f is F 3 C(CF 2 ) m (CH 2 ) n —; R p is (HO) p (Y) 2-p P(O)(CH 2 ) q —; Y is a hydrolysable group; m is an integer from 0 to about 15; n is an integer from 0 to about 5; p is 0, 1 or 2; and q is an integer from 0 to about 5.
2. A substrate comprising a first coating layer comprising at least one fluoride ion-encapsulated functionalized fluoropolyhedral oligomeric silsesquioxane of the formula [1]
wherein each R A is R f or R p , provided that at least one R A is R p ; R f is F 3 C(CF 2 ) m (CH 2 ) n —; R p is (HO) p (Y) 2-p P(O)(CH 2 ) q —; Y is a hydrolysable group; m is an integer from 0 to about 15; n is an integer from 0 to about 5; p is 0, 1 or 2; and q is an integer from 0 to about 5, and at least one fluorocompound.