which are used in the polymerization can be polymers of 2 hydroxyacrylic acid it is preferable to use sodium or potassium salt so as to maintain ph in the desired range in the method of suspension polymerization of the invention it is possible to add a nonionic surfactant such as fatty acid esters of polyhydric alcohol polypropyleneglycol ethyleneoxide adduct or an anionic surfactant such as alkylbenzenesulfonates fatty alcohol sulfates and the like it is also possible to add polymerization modifier such as trichloroethylene carbon tetrachloride aliphatic aldehyde mercaptan etc depending upon grade of polyvinyl chloride the suspension polymerization of the invention can be applied not only to the homopolymerization of vinyl chloride but also the copolymerization of vinyl chloride and a comonomer the comonomers can be u03b1 olefins such as ethylene propylene vinyl esters such as vinyl acetate vinyl stearate vinyl ethers such as methyl vinyl ether cetyl vinyl ether acrylic acid methacrylic acid or esters thereof vinyl halides such as vinyl bromide vinyl fluoride except vinyl chloride aromatic vinyl compounds such as styrene u03b1 methyl styrene maleic acid or maleic anhydride fumaric acid and esters thereof vinylidene chloride acrylonitrile etc the comonomer can be used at a ratio of less than 50 wt parts per 100 wt parts of vinyl chloride the invention will be further illustrated by examples wherein the terms of 34 part 34 designates 34 part by weight 34 and the physical values were measured by the following methods using the following compositions.