A polyoxymethylene resin composition, which comprises (A) 100 parts by weight of polyoxymethylene resin, (B) 0.01 to 5 parts by weight of at least one polymer selected from homopolymers of N-vinylcarboxylic acid amides and copolymers of N-vinylcarboxylic acid amides and other vinyl monomers, and (C) 0.01 to 5 parts by weight of at least one compound selected from the group consisting of polyalkylene glycol and its derivatives, fatty acid amides, esters of alcohols and fatty acids, and esters of alcohols and dicarboxylic acids. Such a polyoxymethylene resin composition has a small amount of released formaldehyde gas during production and molding and suppressed scorching generation and is also distinguished in the water resistance and repeated impact resistance of the resulting moldings.
一种
聚甲醛树脂组合物,它包括(A)100 份(按重量计)
聚甲醛树脂,(B)0.01 至 5 份(按重量计)至少一种选自 N-
乙烯基羧酸酰胺均聚物和 N-
乙烯基羧酸酰胺与其他
乙烯基单体共聚物的聚合物,以及(C)0.0.01 至 5 重量份的至少一种化合物,该化合物选自由聚亚烷基二醇及其衍
生物、
脂肪酸酰胺、醇和
脂肪酸的酯以及醇和二
羧酸的酯组成的组。这样的
聚甲醛树脂组合物在生产和成型过程中释放的
甲醛气体量少,焦烧的产生受到抑制,所制成的成型品的耐
水性和耐反复冲击性也很出色。