content_image/902015.jpg content_image/902018.jpg
<img src='content_image/902015.jpg'>

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. 

## Polymer Synthesis Example 19 

## Synthesis of Polymeric Compound 20 

<img src='content_image/902018.jpg'>

