172  US  9,104,101 B2  171  ~o  ~o  0  0~  ~o  0  0  0  OJD  ’11Q  II  OH  0  (21)  (11)  (33)  ~o  0  ,;so?  ~  0~  0  (01)  Polymeric Compound 19  [Chemical Formula 87]  V601, MEK/CH(80deg.C’.)  Radical Polymerization  Polymer Synthesis Example 19  Synthesis of Polymeric Compound 20  OH  (34)  (12)  [Chemical Formula 88]  For this polymeric compound, the polystyrene-equivalent  weight-average molecular weight (Mw) determined by GPC  measurement was 3,600, and the molecular weight dispersity  (Mw/Mn) was 1.95.  Further, the compositional ratio of the copolymer (the pro› portion (molar ratio) of each of the structural units within the  structural formula) determined by carbon-13 nuclear mag- netic resonance spectroscopy (600 MHz,  $^{13}$C-NMR) was 1/m/  n=58.8/30.7/10.5. 