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[0174] Synthesis of Polymer 8 

[0175] A 2-L flask was charged with 5.0 g of Monomer 6, 3.0 g of a-methylene-y-butyrolactone, 12.4 g of Monomer 3, 7.6 g of PAG Monomer 2, and 40 g ofTHF 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 tempera› ture, whereupon 1.2 g of AIBN as polymerization initiator 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 resulting white solid was collected by filtration and vacuum dried at 60° C., yielding Polymer 8 as white solid. The polymer was analyzed for composition by $^{13}$C- and $^{1 }$H-NMR and for Mw and Mw/Mn by GPC, with the results shown below. 

<img src='content_image/915194.jpg'>

[0176] Synthesis of Comparative Polymer 1 

[0177] Comparative Polymer 1 was synthesized by the same procedure as in Synthesis Example 2-1 aside from omitting Monomer 1. The polymer was analyzed for com› position by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC. 

## Synthesis Example 2-8 

## Comparative Synthesis Example 2-1 

[0178] Synthesis of Comparative Polymer 2 

[0179] Comparative Polymer 2 was synthesized by the same procedure as in Synthesis Example 2-3 aside from using 4-hydroxyphenyl methacrylate instead of Monomer 3. The polymer was analyzed for composition by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC. 

<img src='content_image/915195.jpg'>

<img src='content_image/915196.jpg'>

[0180] Synthesis of Comparative Polymer 3 

[0181] Comparative Polymer 3 was synthesized by the same procedure as in Synthesis Example 2-7 aside from using 4-hydroxyphenyl methacrylate instead of Monomer 3. The polymer was analyzed for composition by $^{13}$C- and $^{1}$H-NMR and for Mw and Mw/Mn by GPC. 

<img src='content_image/915193.jpg'>

## Comparative Synthesis Example 2-2 

## Comparative Synthesis Example 2-3 

