VINYL CHLORIDE RESIN COMPOSITION

摘要

PURPOSE:To provide a resin compsn. having excellent processing characteristics and physical and mechanical characteristics and suitable for use as a material for a video disk, by blending carbon black with a polymer obtd. by graft- polymerizing vinyl chloride onto an ethylene/vinyl ester copolymer in the presence of a dispersant. CONSTITUTION:2-40wt% carbon black is blended with a vinyl chloride graft copolymer obtd. by graft-polymerizing 99.5-80pts.wt. vinyl chloride or mixture thereof with other copolymerizable monomer in the presence of 0.5-20pts.wt. ethylene/vinyl ester copolymer. Said graft copolymer is prepd. by commercing polymn. in the presence of a sorbitan higher fatty acid ester dispersant and/or a polyvinyl alcohol dispersant having a degree of polymn. of 500 or below and a degree of saponification of 60mol% or below and adding a water-soluble dispersant to the polymn. mixture when the conversion of the monomer to the polymer reaches 3-40%.