Surface treatment process, composition for use therein, and treated article

A process comprising

• (a) providing at least one substrate having at least one major surface;
• (b) providing a curable surface treatment composition comprising
• (1) at least one fluorinated organosilane compound comprising (i) a monovalent segment comprising a polyfluoropolyether and (ii) a monovalent endgroup comprising at least one silyl moiety comprising at least one group selected from hydrolyzable groups, hydroxyl, and combinations thereof,
• (2) optionally, at least one fluorinated organosilane compound comprising (i) a multivalent segment comprising a polyfluoropolyether and (ii) at least two monovalent endgroups, each said monovalent endgroup independently comprising at least one silyl moiety comprising at least one group selected from hydrolyzable groups, hydroxyl, and combinations thereof, and
• (3) at least one organosilane compound comprising (i) a multivalent non-fluorinated segment and (ii) at least two monovalent endgroups, each said monovalent endgroup independently comprising at least one silyl moiety comprising at least one group selected from hydroxyl, hydrolyzable groups, and combinations thereof, and/or at least one organosilazane compound;
• (4) at least one organic solvent comprising a hydrofluoroether;
• and
• (c) applying said curable surface treatment composition to at least a portion of at least one major surface of said substrate;
• and
• (d) curing said applied, curable surface treatment composition to form a surface treatment.