| abstract |
Composition of polyamide resin comprising: a resin component containing a polyamide (X) obtained through polycondensation in a molten state of a diamine component containing 70 mol% or more of m-xylylenediamine and a dicarboxylic acid component which it contains 70 mol% or more of a linear α, ω-dicarboxylicaliphatic acid and a metal salt of fatty acid having from 10 to 50 carbon atoms, in which the polyamide (X) is obtained through polycondensation in the state melting of the diadiamine component and the dicarboxylic acid component in the presence of a compound containing a phosphorus atom and an alkali metal compound (C), polyamide (X) contains the compound containing a phosphorus atom in a concentration of from 50 to 400 ppm in terms of the phosphorus atom, and has a ratio represented by an expression: M1 / M2 (in the expression, M1 represents the total molar number of the salt fatty acid metal in the polyamide resin composition and M2 represents the molar number of the compound containing a phosphorous atom in the polycondensation to produce the polyamide (X) in the polyamide resin composition) from 0.05 to 0.5 , and a ratio (molar number of the alkali metal compound (C)) / (molar number of the compound containing a phosphorus atom) is from 0.5 to 1. |