| 摘要 |
PURPOSE:To obtain an arom. polyamide resin molded product with improved mechanical strength, by the pressure molding of an arom. polyamide powder compounded with an oxazoline compd. in a metal mold followed by heating. CONSTITUTION:A powdered polyamide composition obtd. by compounding an arom. polyamide (A) with 0.01-10wt% based on component (A), compound (B) of formula I (wherein D is a divalent org. group.; n is 0 or 1; X is a divalent org. group in which a ring structure of formula II forms a five-or six-membered ring), is subjected to pressure molding in a metal mold to obtain a prelinminary molded product. Then the preliminary molded product is heated at a temp. lower than the m.p. of the aromatic polyamide (A). The compd. of the formula I, being particularly highly reactive with a -COOH group, reacts with the terminal group of the arom. polyamide even in a solid state, which can efficiently increase the degree of polymerization of the arom. polyamide. |
