content_image/905842.jpg content_image/905841.jpg
[0179] Synthesis of Polymer 4 

[0180] A 2-L flask was charged with 3.7 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 as 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 of isopropyl alcohol for precipitation. The precipi› tated 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/905842.jpg'>

-continued 

## Synthesis Example 2-4 

<img src='content_image/905841.jpg'>

[0181] Synthesis of Polymer 5 

[0182] A 2-L flask was charged with 3.5 g of Monomer 5, 8.4 g of l-methyl-1-cyclopentyl methacrylate, 3.6 g of 3-hydroxystyrene, 11.0 g of PAG Monomer 2, and 40 g of THF as 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 of isopropyl alcohol for precipitation. The precipi› tated white solid was collected by filtration and vacuum dried at 60° C., yielding Polymer 5. Polymer 5 was analyzed for composition by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC. 

## Synthesis Example 2-5 

