Patent ID: 8852763

Claim:
A compound of formula I: wherein X are independently —(CH 2 ) b —, wherein b is 0 or an integer from 1 to 6; R f are independently —CF 2 O(CF 2 CF 2 O) p (CF 2 O) q CF 2 —, —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) r CF 2 CF 2 —, or —CF 2 CF 2 CF 2 O(CF 2 CF 2 CF 2 CF 2 O) s CF 2 CF 2 CF 2 , wherein p, q, r, and s are independently integers so that M n of R f is about 150 to 4500; and Z are independently chosen from: —CH 2 OH, —CH 2 CH 2 OH, —CH 2 CH 2 CH 2 OH, —CH(OH)CH 2 OH, —CH 2 CH(OH)CH 2 OH, —CH 2 OCH 2 CH(OH)CH 2 OH, —CH 2 OCH(CH 2 OH)CH 2 OH, —CH 2 OCH 2 CH 2 OCH 2 CH 2 OH, —F, —CF 3 , —CF 2 CF 3 , —OCH 2 CH 2 OH, —CH(CH 2 OH)CH 2 OH, —C 6 H 5 , and piperonyl with the caveat that not all Z are the same.