Patent ID: 8034534

Claim:
A composition comprising a block copolymer of the form A m -B n with Mw =2,000-25,000, wherein m is an integer from 4-75; n is an integer from 2-20; each A is independently selected and is a repeat unit derived from an acrylic monomer, CH 2 ═CR 1 CO 2 R 2 , wherein R 1 is selected from the group consisting of H, F, C 1 -C 5 alkyl, and C 1 -C 5 fluoroalkyl; R 2 is —C(R 7 )(R 8 )—[C(R 9 )(R 10 )] q —C(R 11 )(R 12 )—OH, wherein q=0, 1, 2, 3, 4 or 5; R 7 and R 8 are independently selected from the group consisting of C 1 -C 6 alkyl and C 1 -C 6 alkyl substituted with an ether oxygen; or R 7 and R 8 taken together form a 3- to 8-membered ring, optionally substituted with an ether oxygen, provided that the carbon attached to R 7 and R 8 is not at a bridgehead position; R 9 and R 10 are independently selected from the group consisting of H, C 1 -C 6 alkyl, and C 1 -C 6 alkyl substituted with an ether oxygen; or R 9 and R 10 taken together form a 3- to 8-membered ring, optionally substituted with an ether oxygen; R 11 and R 12 are independently selected from the group consisting of H, C 1 -C 6 alkyl, and C 1 -C 6 alkyl substituted with an ether oxygen; or R 11 and R 12 taken together form a 3- to 8-membered ring, optionally substituted with an ether oxygen; or R 7 and R 11 taken together with —[C(R 9 )(R 10 )] q — form a 4- to 8-membered ring, provided that the carbon attached to R 7 and R 8 is not at a bridgehead position; and each B is independently selected and is a repeat unit derived from CH 2 ═CR 3 CO 2 R 4 , wherein R 3 is selected from the group consisting of H, F, C 1 -C 5 alkyl, and C 1 -C 5 fluoroalkyl; and R 4 is selected from the group consisting of —C(R 5 )(R 6 )(CH 2 ) p R f , —C(R 5 )((CH 2 ) p R f ) 2 , —(CH 2 ) p R f , and —(CH 2 ) p O(CH 2 ) p R f , wherein p is an integer from 1 to 4; R f is C 2 -C 14 perfluoroalkyl; and R 5 and R 6 are independently selected from the group consisting of H, C 1 -C 3 alkyl, or taken together form a 5- or 6-membered ring.