| 摘要 |
PURPOSE:To make it possible to form a tube for automobile pipes, possessing all of heat resistance rigidity, toughness, dimensional stability, road antifreezer resistance, etc., by mixing two polyamides at a specified ratio and molding the mixture. CONSTITUTION:A tube for automobile pipes is formed by molding a mixture 5-95wt.% polyamide (A) mainly consisting of structural units of capramide and/or hexamethyleneadipamide units (e.g., nylon 6 or nylon 56) with a polyam ide obtained by melt-polymerizing at least one member selected from among an 11-12C aliphatic amino acid, a lactam and an equimolar salt of a 6-12C aliphatic diamine with a 6-12C aliphatic dicarboxylic acid (except for hexamethylenediammoniumadipate) (e.g., nylon 11 or nylon 12).
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