VINYL CHLORIDE RESIN COMPOSITION FOR INJECTION MOLDING

PROBLEM TO BE SOLVED: To provide a vinyl chloride resin composition for injection molding which has excellent thermal stability and heat resistance, avoids the occurrence of appearance defects during injection molding, exhibits excellent injection moldability, and does not contain a heavy metal stabilizer such as lead, tin or barium.SOLUTION: The vinyl chloride resin composition for injection molding comprises 100 pts.mass of a vinyl chloride resin, 0.01-10 pts.mass of (a) an organic acid calcium salt and/or an organic acid zinc salt, 0.01-10 pts.mass of (b) a hydrotalcite compound, 0.01-10 pts.mass of (c) a β-diketone compound, and 0.01-10 pts.mass of (d) a polyol mixture, wherein the component (d), i.e., the polyol mixture is a polyol mixture comprising pentaerythritol and a condensation product thereof, and when the degree of condensation of pentaerythritol is represented by n, the total content of pentaerythritol and the condensation product thereof having a value n of 1-3 is 5-40 mass% relative to the total amount of the polyol mixture.