| abstract |
An object of the present invention is to provide a dispersion stabilizer for suspension polymerization that satisfies various performance requirements for suspension polymerization of vinyl-based compounds such as vinyl chloride. A modified vinyl alcohol polymer having a monomer unit represented by the following general formula (I) and having a modification rate of 0.01 mol% to 10 mol%. General formula (I): (wherein, BO is an oxybutylene unit, EO is an oxyethylene unit, m and n represent the number of repeating units of each oxyalkylene unit, 1≤m≤10, 1≤n≤ 60.) |