abstract |
The object of the present invention is to provide a dispersion stabilizer for suspension polymerization that fully satisfies various requirements for suspension polymerization of vinyl compounds such as vinyl chloride. The present invention is a modified vinyl alcohol polymer, which has a monomer unit represented by the following general formula (I), and its modification rate is 0.01 mol% to 10 mol%. General formula (I): (In the formula, BO represents an oxyethylene unit, EO represents an oxyethylene unit, m and n represent the number of repeating units of each oxyalkylene unit, and 1≦m≦10, 1≦n≦60) |