PURPOSE: To obtain a polyamide resin composition capable of providing a molded article having excellent heat resistance and impact resistance and low water absorption ratio by blending an aromatic polysulfone having a specific structure with a polyamide resin.
CONSTITUTION: This polyamide resin composition comprises (A) 15-45wt.% aromatic polysulfone composed of a repeating unit of formula I or an aromatic polysulfone composed of 50mol% or more repeating unit of formula I and 50mol% or less, preferably 5-30mol% repeating unit of formula II, having 0.35-0.6dl/g reduced viscosity (in dimethylformamide at 1g/dl concentration at 30°C), for example, obtained by polymerizing an OH-containing monomer and a halogen-containing monomer (at least one containing sulfonyl group) in the presence of an alkali metal carbonate in an aprotic polar solvent (e.g. sulfolane) in an inert gas, (B) 85-55wt.% polyamide (e.g. nylon 66 or polyester amide) and optionally various kinds of additives.
NAGAI YASUHIKO
NAKAYAMA YASUSHI
SAITO TORANOSUKE
KADOMACHI HIRONORI
KISHIMOTO DAISHIROU
SEKISUI CHEMICAL CO LTD
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