THERMOPLASTIC MULTILAYERED COMPOSITE, PRODUCTION THEREOF AND MOLDING MATERIAL

摘要

PURPOSE: An adhere promoter for the application to a multilayered composite consisting of polyamide and polyester is provided to endow increased barrier action against alcohol contained fuel being transferred through conduits even under severe conditions of high temperature and high pressure. CONSTITUTION: A layer comprising an adhesion auxiliary is provided between a layer comprising a polyamide molding material and a layer comprising a polyester molding material and the adhesion auxiliary contains at least 50 mass % of a compound consisting of 20-80 mass % of (a) polyamide produced from a 6-12C diamine and a dicarboxylic acid and 80-20 mass % of polyester produced from a mixture consisting of 30-95 mol% of a 6-20C aromatic dicarboxylic acid and 70-5_ mol% of a 10-36C dicarboxylic acid and a 2-12C diol.