| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a biaxially stretched blow-molded bottle excellent in impact delamination resistance, transparency, gas-barrier properties, pressure resistance and pressure resistance uniformity. <P>SOLUTION: The material of a biaxially stretched blow-molded bottle is produced by disposing an ethylene-vinyl alcohol copolymer including a structural unit (1) as an intermediate layer and arranging a thermoplastic polyester resin on both outer layers. The ethylene-vinyl alcohol copolymer (EVOH) is preferably obtained by copolymerizing 3,4-diacyloxy-1-butene, vinyl ester-based monomer and ethylene, and then saponifying the obtained copolymer. In the structural unit (1), X is an optional bond chain excluding an ether bond; R1 to R4 are each independently an optional substituent; and (n) is 0 or 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
