PROCÉDÉ DE PRÉPARATION DE POLYMÈRE À BASE DE CHLORURE DE VINYLE, POLYMÈRE À BASE DE CHLORURE DE VINYLE ET COMPOSITION DE POLYMÈRE À BASE DE CHLORURE DE VINYLE

摘要

The present invention relates to a method of preparing a vinyl chloride-based polymer, which comprises bulk-polymerizing a vinyl chloride-based monomer in the presence of an initiator (Step 1); and preparing a vinyl chloride-based polymer after the bulk polymerization (Step 2), wherein a phosphite is added in the step 1, a vinyl chloride-based polymer, and a vinyl chloride-based polymer composition comprising the vinyl chloride-based polymer.