| abstract |
A modified ethylene-vinyl alcohol copolymer represented by the following formula (I), wherein the content ratios (mol%) of a, b, and c satisfy the following formulas (1) to (3) with respect to all monomer units. And the degree of saponification (DS) defined by the following formula (4) is 90 mol% or more; □18≦a≦55 (1) 0.01≦c≦20 (2) [100-(a+c)] ×0.9≦b≦[100-(a+c)] (3) DS=[(the total number of moles of hydrogen atoms in X, Y, and Z) / (the total number of moles of X, Y, and Z)] ×100 (4). |