| 摘要 |
PURPOSE:The title composition for contour extrusion, cpapble of giving molded articles having improved impact strength, heat stability, and processability, prepared by incorporating a hindered phenol antioxidant, an ethylenediamine tetracetate, and an MBS resin-containing vinyl chloride resin. CONSTITUTION:(A) 50-99 parts by wt. of a vinyl chloride resin is kneaded with (B) 1-50 parts by wt. of an MBS resin with an acid content <=1,000 ppm due to the emulsifier, prepared by grafting 25-75 parts by wt. of a monomer mixture of 30-70wt% of methyl methacrylate and 30-70wt% of styrene onto 25-75 parts by wt. of a copolymer rubber consisting mainly of 50wt% or more of polybutadiene and butadiene and styrene, (C) 0.01-2 parts by wt. of a hindered phenol antioxidant, consisting of C, H, O and/or C, H, O, and S, and (D) 0.1-1 part by wt. of an ethylenediaminetetraacetate. |
