| abstract |
PROBLEM TO BE SOLVED: To provide a blow molded multilayer bottle excellent in interlayer adhesion and impact resistance even after long-term storage. An ethylene-vinyl alcohol copolymer containing the following structural unit (1), preferably obtained by copolymerizing 3,4-diacyloxy-1-butene, a vinyl ester monomer, and ethylene. It has at least two layers of an ethylene-vinyl alcohol copolymer (A) -containing layer and a polyolefin resin-containing (B) layer obtained by saponifying the copolymer. [Chemical 1] (Here, X is a bond chain and is an arbitrary bond chain excluding an ether bond, R1 to R4 are each independently an arbitrary substituent, and n represents 0 or 1.) |