反应详情

The obtained copolymer A was dissolved in an ethanol/toluene solvent (volume ratio 7:3) and was then reacted using sulfuric acid at 65° C. for 90 minutes. After washing this reaction solution with an alkaline solution, the resulting solution was subjected to a reprecipitation process using a methanol/water (volume ratio 1:1) solvent to obtain a reprecipitate, then the reprecipitate was filtered to obtain the retained matter, and the retained matter was air-dried to obtain styrene-p-hydroxystyrene (PHS) copolymer B (yield 87%). The Mw of copolymer B was 216,300 and the ratio Mw/Mn was 1.15.

1. customwas then reacted
2. customat 65° C.
3. customfor 90 minutes
4. washAfter washing this reaction solution with an alkaline solution
5. customto obtain a reprecipitate
6. filtrationthe reprecipitate was filtered
7. customto obtain the retained matter
8. customthe retained matter was air-dried