| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyamide resin composition that can firmly adhere to a fluororesin, and causes no or few problems such as over-reaction, at the adhesion interface when multilayer composites are formed from the fluororesin and the polyamide resin. SOLUTION: The polyamide resin composition comprises (A) a polyamide wherein the molar ratio of the carboxyl end group to the amino end group is >1, (B) an aminocarboxylic acid having a molecular weight of <=15,000, and (C) a base having a pKa (25 deg.C) of >=10 or a salt thereof. The relative viscosity of the polyamide (A) is, for example, on the level of 1.9-2.7 (in 0.5 wt.% m-cresol solution at 25 deg.C). The aminocarboxylic acid (B) comprises (B1) a polyamide having a number average molecular weight of 200-15,000, (B2) an aliphatic aminocarboxylic acid, or the like. A cyclic amine and a salt thereof are the examples that can be used as the base or salt thereof (C).
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