Patent ID: 8858813

Claim:
A process comprising (a) providing at least one substrate having at least one major surface comprising at least one elemental metal, at least one metal alloy, at least one metal-containing compound, or a combination thereof; (b) providing at least one patterning composition comprising at least one functionalizing molecule that is a perfluoropolyether organosulfur compound comprising at least one perfluoropolyether segment selected from F[CF(CF 3 )CF 2 O] a CF(CF 3 )—, wherein a has an average value of 4 to 20, and —CF(CF 3 )(OCF 2 CF(CF 3 ) b OCF 2 CF 2 CF 2 CF 2 O(CF(CF 3 )CF 2 O) c CF(CF 3 )—, wherein b+c has an average value of 4 to 15; (c) applying said patterning composition to said major surface of said substrate in a manner so as to form at least one functionalized region and at least one unfunctionalized region of said major surface; and (d) etching at least a portion of said unfunctionalized region.