Patent ID: 7807742
Filing Date: 2010-10-05
Classification: C08G,C08K,C08L

Abstract:
1. A polyamide resin composition comprising: a polyamide (x) having a diamine constituent unit comprising at least 70 mol % of m-xylylenediamine units and a dicarboxylic constituent unit comprising at least 70 mol % of adipic acid units; a phosphorus acid antioxidant; and an alkaline component; the polyamide resin composition satisfying the following formulae (1) to (4): where A represents the concentration (ppm) of phosphorus atoms derived from the phosphorus acid antioxidant relative to the total amount of the polyamide (x), the phosphorus acid antioxidant, and the alkaline component; B represents the number of moles of the phosphorus acid antioxidant contained in the composition; C represents the number of moles of the alkaline component contained in the composition, D represents the reaction rate of the total amino groups of the polyamide (x); [COOH] represents the terminal carboxyl group concentration (μequiv/g) in the polyamide (x); and [NH 2 ] represents the terminal amino group concentration (μequiv/g) in the polyamide (x).