| abstract |
In the multilayer bottle of the present invention, the outermost layer and the innermost layer are composed of polyester (Z1), and the barrier layer includes a resin composition containing 40 to 99 parts by mass of polyamide (X) and 1 to 60 parts by mass of polyester (Z2). It is comprised and the alkali compound (A) is mix | blended with this resin composition, and also this resin composition satisfy | fills following formula | equation (1)-(3). 0.01 ≦ P ≦ 6.5 (1) 3.2 ≦ M ≦ 73.1 (2) M ≧ 29.2−0.218α (3) (Wherein P represents the molar concentration of phosphorus atoms (μmol / g), M represents the molar concentration of alkaline (earth) metal atoms (μmol / g), and α represents the polyamide (X) contained in the resin composition. Represents the mass part.) |