| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a multilayer composite material having a good cut-off effect against a medium brought into contact with the material while an adhesive force between layers after cooling liquid is operated for a long time as it is after storage for a long time in a methanol-containing fuel at a high temperature or under operating conditions with rigidity without additional adherence auxiliary layer at all. SOLUTION: In the multilayer composite material comprising a layer I made of at least polyamide molding material and a layer II made of a polyester molding material, the polyester molding material contains a mixture of (a) 80 to 99 wt.% of polyalkylene-2, 6-naphthalate selected from polyethylene-2,6- naphthalate and polybutylene-2,6-naphthalate, and (b) 1 to 20 wt.% of one or more types of compound having at least two isocyanate groups.</p> |
