| 摘要 |
PROBLEM TO BE SOLVED: To improve flexural fatigue resistance of an ethylene-vinyl alcohol copolymer without reducing gas-barrier properties and heat-resistance of the copolymer. SOLUTION: The ethylene-vinyl alcohol copolymer having an ethylene content of 20-50 mol% contains 0.01-1 mol% of a structural unit expressed by formula (3) (wherein n is integer of 2-5; m is integer of 10-20; and R<SP>1</SP>is 1-20C aliphatic hydrocarbon group; R<SP>1</SP>group may contain mercapto, thioester, sulfenamido, vinyl, methacryloxy or acryloxy). The modified ethylene-vinyl alcohol copolymer can be used as a gas-barrier resin, a pneumatic tire, a hose, etc. COPYRIGHT: (C)2010,JPO&INPIT
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