There is provided a polyvinyl chloride dispersion resin from which a product having excellent clarity and heat resistance can be obtained, and which has improved pulverization efficiency and increased recovery percentage in the production process, a plastisol composition and a plastigel composition using the same. The polyvinyl chloride dispersion resin of the present invention is obtained by polymerization using 0.1 to 5.0 parts by weight of an ammonium salt emulsifier based on 100 parts by weight of a vinyl chloride monomer, wherein the polyvinyl chloride dispersion resin has a specific surface area of 5 to 10 m
2
/g and comprises (A) 10 to 60% by weight of a particle having a particle diameter distribution of less than 0.5 &mgr;m and having at least one peak diameter of the distribution in the range of at least 0.1 &mgr;m to less than 0.5 &mgr;m and (B) 40 to 90% by weight of a particle having a particle diameter distribution of at least 0.5 &mgr;m and having at least one peak diameter of the distribution in the range of at least 0.5 &mgr;m to at most 1.3 &mgr;m.
本发明提供了一种聚
氯乙烯分散
树脂,可从中获得透明度和耐热性极佳的产品,并提高了生产过程中的粉碎效率和回收率,还提供了使用该
树脂的塑料溶胶组合物和塑凝胶组合物。本发明的聚
氯乙烯分散
树脂是以 100 份重量的
氯乙烯单体为基础,使用 0.1 至 5.0 份重量的
铵盐
乳化剂进行聚合而得到的,其中聚
氯乙烯分散
树脂的比表面积为 5 至 10 m 2
2
/g,并包括(A)10-60%(重量)的颗粒,其颗粒直径分布小于 0.5 &mgr;m,且至少有一个峰值直径分布在至少 0.1 &mgr;m 至小于 0.5 &mgr;m 的范围内;(B)40-90%(重量)的颗粒,其颗粒直径分布至少 0.5 &mgr;m,且至少有一个峰值直径分布在至少 0.5 &mgr;m 至最多 1.3 &mgr;m 的范围内。