The present disclosure relates to a vinyl chloride-based polymer having a pH of 7 to 11 and satisfying the number of olefin-type defects (NO) of 1.5 or less and the number of chloro-type defects (NC) of 11.0 or less. The vinyl chloride-based polymer contains reduced defects in the entire polymer and may suppress dehydrochlorination reaction or crosslinking reaction during processing, and effects of preventing discoloration phenomenon, improving heat resistance and preventing the deterioration of physical properties may be expected.
本公开涉及一种
氯乙烯基聚合物,其 pH 值为 7 至 11,烯烃型缺陷(NO)的数量为 1.5 或以下,
氯型缺陷(NC)的数量为 11.0 或以下。这种
氯乙烯基聚合物在整个聚合物中的缺陷减少,可抑制加工过程中的脱氢
氯化反应或交联反应,从而可望达到防止变色现象、提高耐热性和防止物理性能恶化的效果。