| 摘要 |
PROBLEM TO BE SOLVED: To improve durability of a tire in a low temperature range while maintaining excellent air permeability resistance.SOLUTION: There is provided an air permeability-resistant film for tire comprising a dynamic crosslinking body including a thermoplastic polyester-based elastomer as a continuous phase and a rubber as a disperse phase, obtained by melt-kneading the elastomer and the rubber and dynamically crosslinking. The air permeability-resistant film is a polymer having a melt flow rate of 5 g/10 min or less at a measuring temperature of 190°C and load of 2.16 kg complying with JIS K7210, and contains in the dynamic crosslinking body, 1 to 10 mass% of at least one ethylenic polymer selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymer and ethylene-(meth)acrylic acid alkyl ester copolymer. |
