Feb.4,2021  117  US  2021/0033971  Al  -continued  -continued  Mw~ 8,800  Mw/Mn~l.75  Q  ~s~  ~  Mw~ 8,500  Mw/Mn~ 1.51  Polymer 7  r  o+r  6  0  0  ~  {)  r  0  0  F2  0  C  y’s03- O  CF3  Polymer 8  r  ~r  l __  J  o  o  I  {)  r  0  0  F2  0  C  y  ’--s03- O  CF3  [0202]  A 2-L flask was charged  with 1.5 g of Monomer  7,  8.4 g of  l-methyl-1-cyclopentyl  methacrylate, 3.4  g of  3-hydroxystyrene,  11.0 g of PAG Monomer  2, and 40 g of  THF solvent. The reactor  was cooled at - 70°  C. in nitrogen  atmosphere, after which  vacuum pumping and  nitrogen  blow were repeated three  times. The reactor was warmed  up  to room temperature, whereupon  1.2 g of AIBN was added.  The reactor was heated at  60°  C., whereupon reaction ran  for  15 hours. The reaction solution  was poured into 1 L ofIPA  for precipitation. The precipitated  white solid was collected  by filtration and vacuum  dried at 60°  C., yielding Polymer  8. Polymer 8 was analyzed  for composition by $^{13}$C- and  $^{1}$H-NMR and for Mw and  Mw/Mn by GPC.  [0200]  A 2-L flask was charged  with 1.3 g of Monomer  6,  8.4 g of  l-methyl-1-cyclopentyl  methacrylate, 3.4  g of  3-hydroxystyrene,  11.0 g of PAG Monomer  2, and 40 g of  THF solvent. The reactor  was cooled at - 70°  C. in nitrogen  atmosphere, after which  vacuum pumping and  nitrogen  blow were repeated three  times. The reactor was warmed  up  to room temperature, whereupon  1.2 g of AIBN was added.  The reactor was heated at  60°  C., whereupon reaction ran  for  15 hours. The reaction solution  was poured into 1 L ofIPA  for precipitation. The precipitated  white solid was collected  by filtration and vacuum  dried at 60°  C., yielding Polymer  7. Polymer 7 was analyzed  for composition by $^{13}$C- and  $^{1}$H-NMR and for Mw and  Mw/Mn by GPC.  [0199]  Synthesis of Polymer 7  [0201]  Synthesis of Polymer 8  Synthesis Example 8  Synthesis Example 7 