Patent ID: 8907120

Claim:
A compound of Formula (II) wherein Rf is a perfluoropolyether group; each Y 1 is independently (a) a heteroalkylene, (b) alkylene, or (c) a carbonylamino group linking a first group to a second group, wherein the first group and the second group are each a heteroalkylene or alkylene, or (d) a combination thereof; each R 1 is independently an alkyl, haloalkyl, aralkyl, substituted aralkyl, alkenyl, aryl, substituted aryl, or imino of formula —N═CR 4 R 5 ; each R 2 is independently hydrogen, alkyl, aralkyl, or aryl; R 4 is a hydrogen, alkyl, aralkyl, substituted aralkyl, aryl, or substituted aryl; and R 5 is an alkyl, aralkyl, aryl, or substituted aryl; and n is an integer equal to at least 2.