| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a laminated tube excellent in chemical liquid impermeability, interlayer adhesion, and particularly, durability of interlayer adhesion under the high-temperature atmosphere. <P>SOLUTION: The laminated tube includes at least the following four layers: a layer consisting of aliphatic polyamide; a layer comprising polyester polymer composition made of specific amount polyglycolic acid polymer and aromatic polyester polymer; a layer comprising modified polyester elastomer graft-modified with α, β-ethylene nature unsaturated carboxylic acid, diamine unit containing C9-13 aliphatic diamine unit by a specific amount, diamine unit containing C9-13 aliphatic diamine unit by a specific amount, semi-aromatic polyamide which consists of dicarboxylic acid unit containing terephthalic acid and/or naphthalenedicarboxylic acid unit of specific amount; and a layer comprising polyoxamide which comprises dicarboxylic acid unit containing a specific amount of oxalic acid. <P>COPYRIGHT: (C)2012,JPO&INPIT |
