Process for the protection of stony or coating surfaces

DETAILED DESCRIPTION We claim: 1.
A method of protecting objects from graffiti comprising: applying to a surface of a material to be treated a formulation comprising less than 20% solvent and a fluorinated polymer wherein the fluorinated polymer comprises a fluorinated part R.
sub.
F and optionally a hydrogenated part R.
sub.
H, not containing groups capable of linking to basic acceptors by hydrogen bonds, a hydrogenated part Rh.
sub.
1 and Rh.
sub.
2, wherein Rh.
sub.
1 is equal to or different from Rh.
sub.
2, and Rh.
sub.
1 and Rh.
sub.
2 are linking bonds containing at least a functional group capable of linking to basic acceptors by means of hydrogen bonds, the bonds linking the fluorinated part to the hydrogenated part being of simple C--O ether type, the terminal groups T'.
sub.
a and T" being such as to render the structure mono-, bi-, or polyfunctional, the monofunctional products always being in admixture with a resin having a higher functionality; and curing the fluorinated polymer to create a graffiti resistant protective coating.
2.
The method according to claim 1, wherein the fluorinated polymer has the formula T"--(Rh.
sub.
2).
sub.
y (R.
sub.
H).
sub.
x --R.
sub.
F --(R.
sub.
H).
sub.
x --(Rh.
sub.
1).
sub.
y' T'.
sub.
a (II) wherein Rh.
sub.
1 and Rh.
sub.
2, equal to or different from each other, are linking bonds containing at least a functional group capable of linking to basic acceptors by hydrogen bonds; x is an integer from 1 to 10; y and y' equal to or different from each other, are integers from 0 to 1, at least one of the two being 1; T'.
sub.
a =--(CH.
sub.
2 CH.
sub.
2 O).
sub.
n --(R.
sub.
H).
sub.
x' --T.
sub.
a wherein n is an integer from 0 to 6, and x' is an integer from 1-10; T"=--(CH.
sub.
2 CH.
sub.
2 O).
sub.
n --(R.
sub.
H).
sub.
x' --T.
sub.
b T.
sub.
a and T.
sub.
b being hydrogen or a reactive terminal group, capable of rendering the structure mono or polyfunctional such as to make the resin reactive towards the curing agents both of ionic and radical type, and T.
sub.
a being equal to or different from T.
sub.
b such that the T