Abstract: A process for the polymerization of vinyl chloride which comprises adding to an aqueous dispersion of vinyl chloride polymer prepared by a suspension polymerization process, optionally containing vinyl chloride monomer, or a bulk polymerization process the additives necessary for emulsion polymerization, then effecting the polymerization of the vinyl chloride monomer present in the reactor prior to introducing the emulsion polymerization additives and/or vinyl chloride monomer added after the introduction of these additives.Vinyl chloride polymers comprising vinyl chloride polymer particles produced by suspension or bulk polymerization having vinyl chloride granules agglutinated thereon said granules having the dimensions of vinyl chloride granules obtained by conventional emulsion polymerization.