POLYAMIDE RESIN COMPOSITION

摘要

PURPOSE: To provide a polyamide resin derived from a specific monomer composition and having excellent heat-resistance and good moldability. CONSTITUTION: This polyamide resin is composed mainly of a polyamide produced from diamines composed of 15-65mol% of p-xylylenediamine and 85-3mol% of m-xylylenediamine and dicarboxylic acids composed of 45-80mol% of a 6-12Cα,ω-aliphatic dicarboxylic acid and 55-20mol% of an aromatic dicarboxylic acid, having a glass transition point (Tg) of 900-130 deg.C (363-403K) and satisfying the formula 0.707<=(tg/Tm)<=0.750 [Tm is melting point; Tg and Tm are expressed by absolute temperature (K)].