Patent ID: 6225367
Filing Date: 2001-05-01
Classification: C08G,C08L,G02B

Abstract:
A polymer comprising one or more perfluoroalkylpolyether (PFPE) units and one or more charged units selected from the group consisting of zwitter-ionic units wherein the PFPE units are of formula--OCH.sub.2 CF.sub.2 O (CF.sub.2 CF.sub.2 O).sub.x (CF.sub.2 O).sub.y CF.sub.2 CH.sub.2 O-- (1)wherein the CF.sub.2 CF.sub.2 O and CF.sub.2 O units may be randomly distributed or distributed as blocks throughout the chain and wherein x and y may be the same or different such that the molecular weight of the perfluorinated polyether is in the range of from 242 to 8000.