| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyacetal resin composition having excellent resistance to the deterioration with vinyl chloride resin under various heated conditions. SOLUTION: (A) 100 pts.wt. polyacetal resin, (B) 0.01 to 5.0 pts.wt. antioxidant, and (C) 0.1 to 15 pts.wt. porous compound having a pore diameter of 1 to 10Åand containing an oxide of silicon and aluminum represented by the formula MnAlx Siy Oz , wherein M denotes an alkali metal or an alkaline earth metal and (x), (y), and (z) are each a number of 1 or more with y/x being at least 1.0 but at most 3.0, as a major component, and an alkali metal or an alkaline earth metal are mixed.
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