| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laminated tube superior in chemical permeation prevention effect, interlayer adhesion and durability of interlayer adhesive strength, particularly in a high temperature atmosphere. <P>SOLUTION: The laminated tube is composed of at least four layers including: a layer composed of aliphatic polyamide; a layer composed of polyalkylene naphthalate; a layer composed of modified polyester-based elastomer graft-modified withα,β-ethylenic unsaturated carboxylic acid; and a layer composed of semi-aromatic polyamide having a diamine unit including a 9 to 13C aliphatic diamine unit by≥60 mol% to the total diamine unit and a dicarboxylic acid unit including a terephthalic acid and/or naphthalenedicarboxylic acid unit by≥50 mol% to the total dicarboxylic acid unit, or polyoxamide having a 9 to 13C aliphatic diamine unit by≥60 mol% to the total diamine unit and a dicarboxylic acid unit by≥60 mol% to the total dicarboxylic acid unit. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
