| 摘要 |
[Problem] The purpose of the present invention is to provide a dispersion stabilizer for suspension polymerization, whereby polymer particles of uniform diameter can be manufactured with minimal formation of coarse particles, and whereby polymer particles can be obtained having reduced blocking and scaling, as well as extremely superior plasticizer absorption properties and monomer removal properties. [Solution] A dispersion stabilizer for suspension polymerization, containing a polyoxyalkylene-modified vinyl alcohol-based polymer (A) having a polyoxyalkylene group with 2 to 100 repeating units and 2-4 carbon atoms in an alkylene group in a side chain, the polyoxyalkylene-modified vinyl alcohol-based polymer (A) having a viscosity average degree of polymerization of less than 500 and a degree of saponification greater than 70 mol%, and the denaturation rate of the polyoxyalkylene group being 0.1 mol% to 10 mol%.
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