| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition hardly generating formaldehyde smell, and capable of reducing the generation of an attachment to the metal mold by including a polyacetal resin, a specific carbon black, an amine-based antioxidant and a nitrogen-containing compound. SOLUTION: This colored composition of a polyacetal resin comprises (A) 100 pts.wt. polyacetal resin, (B) 0.1-30 pts.wt., preferably 0.5-20 pts.wt. carbon black previously subjected to an integration treatment with an ethylenic polymer compound (e.g. a low density polyethylene) of 0.3-8 weight times, preferably 0.5-5 weight times as much as the carbon black, expressed in terms of the carbon black, (C) 0.01-5 pts.wt., preferably 0.05-2 pts.wt. amine-based antioxidant [e.g. 4,4-bis(α,α-dimethylbenzyl)diphenylamine], (D) 0.1-10 pts.wt., preferably 0.5-5 pts.wt. nitrogen-containing compound (e.g. melamine) and (E) optionally 0.1-10 pts.wt. polyalkylene glycol-based compound, etc. |
