A compound of the formula: wherein: R1 is selected from H, an alkyl group, an aryl group, and combinations thereof; R2 is Rf—(CH2)x—; R3 is selected from a vinyl group, a vinylether group, a (meth)acryloyloxy group, a (meth)acryloylamino group, a trialkoxysilylalkylthio group, and a trialkoxysilylalkylamino group; Y is selected from a bond, and —(CH2CH2O)y—; n is greater than 10; x is 2 to 20; and y is at least 1.