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<img src='content_image/914317.jpg'>

[0191] Synthesis of Polymer 3 

[0192] A 2-L flask was charged with 0.5 g of Monomer 3, 8.4 g of l-methyl-1-cyclopentyl methacrylate, 3.6 g of 3-hydroxystyrene, 11.9 g of PAG Monomer 1, 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 3. Polymer 3 was analyzed for composition by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC. 

<img src='content_image/914318.jpg'>

## Synthesis Example 3 

[0193] Synthesis of Polymer 4 

[0194] A 2-L flask was charged with 0.6 g of Monomer 4, 8.4 g of l-methyl-1-cyclopentyl methacrylate, 3.6 g of 3-hydroxystyrene, 12.1 g of PAG Monomer 3, 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 4. Polymer 4 was analyzed for composition by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC. 

<img src='content_image/914316.jpg'>

## Synthesis Example 4 

<img src='content_image/914319.jpg'>

