| 摘要 |
PURPOSE:To obtain a blown polyamide molding having transparency, heat resistance and gas barrier property, by forming a blown molding from a specified polyamide. CONSTITUTION:A blown molding formed from a polyamide formed by the polymerization or copolymerization of 75-100wt% component for forming a semi-aromatic polyamide (component a) comprising an aliphatic diamine and isophthalic acid and/or terephthalic acid with 25-0wt% component for forming an aliphatic polyamide (component B) comprising a lactam or both of an aliphatic diamine and an aliphatic dicarboxylic acid. The ratio of isophthalic acid to terephthalic acid used in component (a) is preferably 20:80-80:20 by weight. The polyamide used is usually produced by melt polymerization of a nylon salt comprising a diamine and a dicarboxylic acid or its aqueous solution, optionally, together with a lactom, or it is produced by a solution process or an interfacial polymerization process according to the composition of the isophthalic acid/terephthalic acid mixture.
|
