| 摘要 |
PROBLEM TO BE SOLVED: To provide an industrial tube which has a polyamide resin layer having superior impermeability of various liquids, steam and/or gas, having a wide moldable temperature and superior melting-moldability, low moisture absorbency, chemical resistance, and hydrolysis resistance. SOLUTION: The industrial tube is characterized by including the polyamide resin layer in which a dicarboxylic acid component consists of oxalic acid, a diamine component consists of 1,9-nonane diamine and 2-methyl-1,8-octane diamine, and a molar ratio of the 1,9-nonane diamine to 2-methyl-1,8-octane diamine is 1:99 to 99:1. COPYRIGHT: (C)2011,JPO&INPIT |
