| 摘要 |
A resin composition comprises a copolymer (A) comprising ethylene as a major component produced with a single-site catalyst, and an ethylene-vinyl alcohol copolymer (B) having an ethylene content of 20-60 mol. % and a degree of hydrolysis of 95% or above, the resin composition satisfying the equation (1):<paragraph lvl="0"><in-line-formula>1/99<={weight of (A)}/{weight of (B)}<=<99/1 (1)</in-line-formula>A preferred resin composition comprises a copolymer (A) which has a density of 0.90-0.94 g/cm3 and the resin composition further comprises a carboxylic acid-modified polyolefin (C) and satisfies the equations (2) and (3):<paragraph lvl="0"><in-line-formula>60/40<={weight of (A)}/{(weight of (B)}<=: 99/1 (2)</in-line-formula><paragraph lvl="0"><in-line-formula>0.1/99.9<=X<=: 20/80 (3)</in-line-formula>wherein X {weight of (C)}/{total weight of (A) and (B)}. Another preferred resin composition comprises a copolymer (A) which has a density of 0.85-0.90 g/cm3, and which satisfies the equation (5):<paragraph lvl="0"><in-line-formula>1/99<={weight of (A)}/{weight of (B)}<=40/60 (5)</in-line-formula>The resin composition has superior melt moldability, gas barrier properties, flexural fatigue resistance, and impact resistance. It can be used in the preparation of a multilayered structure to impart a good appearance, delamination resistance, transparency, impact resistance, and gas barrier properties to the structure.
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