may also contain additional ingredients such as hindered phenolic antioxidants organic phosphite antioxidants lubricants mold release agents flame retardants and colorants and or pigments including titanium dioxide the ionic polymer is preferably present in a gloss reducing amount selected from between 1 and 20 weight percent based on the total weight of the composition more preferably from 1 to 10 weight percent thereof and most preferably from 3 to 8 weight percent thereof the preferred ionic copolymer is a terpolymer of ethylene methacrylic acid zinc methacrylate the following examples illustrate the advantage of using ionomeric polymers as gloss reducing agents when compared to polyepoxide gloss reducing agents in polycarbonate abs blends when the blends further contain phosphites and titanium dioxide examples a h are comparative examples examples 1 to 15 are examples comprising polycarbonate graft polymer and ionomeric polymer the ionomers used in this study were obtained commercially from du pont and are ethylene methacrylic acid zinc methacrylate terpolymers the experimental blends containing pc san abs and various ionomers surlyn u00ae ionomers the ingredients were melt compounded in a twin screw extruder at a stock temperature of 500 u00b0 f and 300 rpm injection molding of the test samples tensile bars circular plaques was done at 500 u00b0 f table i lists the formulations and properties of the experimental blends and control blends table i______________________________________formulations and properties of pc absblends sample id d022 46 a 1 2 3______________________________________polycarbonate 64 64 64 64san 1 20 20 20 20hrg 1 16 16 16 16ao 0 1 0 1 0 1 0 1surlyn u00ae 9020 5 0 surlyn u00ae 9450 5 0 surlyn u00ae 9970 5 0gardner gloss 60 u00b0 88 31 15 16izod impact ft lb in 14 15 14 14notchedmelt viscosity.