Fluorinated acrylamide silane monomers and polymers

A polymer comprising fluorinated acrylamide silane units, wherein said units have the formula ##STR9## wherein R.sup.1 and R.sup.6 are independently hydrogen or methyl;

• R.sup.2 and R.sup.3 independently can be an alkyl, cycloalkyl, or aryl groups, or R.sup.2 and R.sup.3 taken together with the carbon to which they are joined can form a carbocyclic ring containing 4 to 12 ring atoms;
• R.sup.4 and R.sup.5 are independently hydrogen or lower alkyl;
• R.sup.7 is alkylene, cycloalkylene, or arylene;
• R.sup.8 is hydrogen or lower alkyl;
• a is zero or 1;
• X is a carbon-to-carbon single bond, CH.sub.2, CH.sub.2 OCH.sub.2, or CH.sub.2 CH.sub.2 OCH.sub.2 ;
• and
• R.sub.F is a substantially perfluorinated alkyl, cycloalkyl, or aryl group, comprising 0 to 6 catenary non-peroxidic oxygen atoms.