84  US 9,152,050 B2  83  0  Polymer 2  OH  Polymer 5  F3C  OH  Polymer 6  CF3  OH  (0  #  Polymer 3  OH  Polymer 7  CF3  OH  F3C  CF3  OH  Polymer4  Polymer7  Polymer4  Polymer3  Polymer 6  Polymer 2  Polymer 5  Mw=S,100  Mw/Mn=l.74  Mw=S,100  Mw/Mn=l.82  Mw=9,200  Mw/Mn=l.84  Mw=7,200  Mw/Mn=l.69  Mw=S,000  Mw/Mn=l.80  Mw=6,800  Mw/Mn=l.65 