| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition with excellent balance between melt tension and fluidity by admixing at least one wax and a fatty acid metal salt with a resin composition comprising a styrenic resin and a filler in a specific wt. ratio thereby adjusting the melt tension to a specific value. SOLUTION: There are admixed 0.1-10 pts.wt. of at least one wax and 0.1-5 pts.wt. of at least one selected from salts of a fatty acid with Na, Mg, Ca and Al with 100 pts.wt. of a resin composition comprising 40-95 wt.% of a styrenic resin having an MFR of 0.1-80 such as a polystyrene, an acrylonitrile/ styrene resin or the like and 5-60 wt.% of at least one filler selected from metal oxides, metal carbonates, metal sulfates and the like to give a resin composition having a melt tension of 5-150 g. As the wax is employed a polyethylene wax having a viscosity at 140 deg.C of 100-30,000 cps, a polypropylene wax having a viscosity at 160 deg.C of 50-5,000 cps, an oxidized polyethylene wax having a viscosity at 140 deg.C of 100-30,000 cps or the like. |
