Patent ID: 8791212

Claim:
A block copolymer having a blockiness index, B, in the range of 0.56 to 0.8, comprising a first block comprising a plurality of non-fluorinated alkylene arylate repeat units adjacent to one another; and a second block comprising a plurality of fluoroether functionalized alkylene arylate repeat units adjacent to one another; said non-fluorinated alkylene arylate repeat units represented by Structure I wherein each R is independently H or C 1 -C 10 alkyl, and R 3 is C 2 -C 4 alkylene which can be branched or unbranched; and, said fluoroether functionalized repeat units are represented by Structure II, wherein Ar represents a benzene or naphthalene radical; each R is independently H, C 1 -C 10 alkyl, C 5 -C 15 aryl, C 6 -C 20 arylalkyl; OH, or a radical represented by the Structure (III) with the proviso that only one R can be OH or the radical represented by the Structure (III); R 1 is a C 2 -C 4 alkylene radical which can be branched or unbranched, X is O or CF 2 ; Z is H, Cl, or Br; a=0 or 1; and, Q represents the Structure (IIa) wherein q=0-10; Y is O or CF 2 ; Rf 1 is (CF 2 ) n , wherein n is 0-10; and Rf 2 is (CF 2 ) p , wherein p is 0-10, with the proviso that when p is 0, Y is CF 2 .