| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyamide master batch pellet excellent in stability in processing by largely improving resistance to heat aging of a polyamide resin and suppressing deposition of a metal copper in an extruder or a molding machine, capable of providing a molded article in which the change of appearance color by water absorption is extremely slight without lowering the mechanical properties and enabling efficient production and to provide the molded article by using the master batch pellet. SOLUTION: The polyamide master batch pellet is obtained by melt-kneading (A) granules composed of (a) a copper compound, (b) an alkali halide and (c) at least one compound selected from a higher fatty acid metal salt, a higher fatty acid ester and a higher fatty acid amide in which the acid value is 0.05-30 mg/g with (B) a polyamide resin. In the master batch pellet, a molar ratio (a halogen atom/a copper atom) of the halogen atom and the copper atom contained in the polyamide master batch is 12-40 and the copper concentration in the master batch is 1 ppm to 10 wt.%. COPYRIGHT: (C)2006,JPO&NCIPI |
