Abstract: Disclosed in a delustered, thermally shrinkable polyvinyl chloride film which is obtained by extruding and orienting a polyvinyl chloride resin composition in which the polyvinyl chloride is a mixture of (A) a partially crosslinked polyvinyl chloride resin and (B) a non-crosslinked polyvinyl chloride resin in an (A)/(B) weight ratio of from 15/85 to 80/20; and in which the average polymerization degree of tetrahydrofuran-soluble portion of the polyvinyl chloride resin (B) is greater than that of tetrahydrofuran-soluble portion of the polyvinyl chloride resin (A).

Abstract: A composite polymeric material having a high permeability to oxygen is proposed comprising a vinyl chloride moiety, an organosilicon moiety and, optionally, a third polymeric moiety. Such a composite polymeric material can be prepared in several ways including copolymerization of vinyl chloride monomer, a polymerizable organosilicon compound and, optionally, a third monomer, graft-polymerization of a polymerizable organosilicon compound on to a polyvinyl chloride resin, graft-polymerization of vinyl chloride on to an organopolysiloxane, graft-copolymerization of vinyl chloride and a polymerizable organosilicon compound on to a third polymer and blending of the respective polymeric components.

Abstract: The invention proposes a foamable vinyl chloride-based resin composition capable of giving a shaped article having a cellular foamed structure and a beautiful surface with metallic luster. The composition comprises (a) 100 parts by weight of a vinyl chloride-based resin compound of a transparency formulation having a specified transparency, (b) 0.1-5 parts by weight of a powder of a metal or alloy having a specified average particle diameter, (c) 0.01-2 parts by weight of an organic dye or pigment and (d) 0.1-5 parts by weight of a blowing agent.