| 摘要 |
PURPOSE:To provide the titled composition giving decreased molding strain without lowering various characteristics of the base resin, by adding a compound selected from specific fatty acids, aliphatic alcohols, esters and petroleum paraffin and a compound selected from boron nitride, hydrotalcite and talc. CONSTITUTION:(A) 100pts.wt. of an acetal resin is compounded with (B) 0.005- 2pts., preferably 0.01-1.5pts. of one or more compounds selected from 22-32C higher fatty acids, 31-38C higher aliphatic alcohols, esters of said alcohol and 18-22C higher fatty acids, and petroleum paraffin, and (C) 0.001-0.13pt., preferably 0.003-0.1pt. of one or more compounds selected from boron nitride, hydrotalcite, and a surface-treated talc. The mixture is kneaded under melting preferably at 175-230 deg.C. |
