| 摘要 |
A polyacetal resin composition which, even when exposed to light for long, is minimized in the degradation and discoloration of the resin and the bleeding of and discoloration due to the additives contained therein, can retain the initial surface conditions of a molding, and is excellent in weathering and environmental resistances. The composition comprises 100 parts by weight of a polyacetal resin (A), 0.01-2.0 parts by weight of an ultraviolet absorber (C), 0.01-4 parts by weight of a low-molecular-weight hindered amine (D-1) having a molecular weight below 700, 0.01-4 parts by weight of a high-molecular-weight hindered amine (D-2) having a molecular weight of at least 700, and optionally an oxyalkylene polymer (E). The composition may further contain a specified core-shell polymer and can provide a molding which, even when exposed to light for long, is minimized in the degradation and discoloration of the resin and the discoloration due to the bleeding of the additives, is excellent in weathering and environmental resistances, and has a lowered surface gloss.
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