| abstract |
(57) [Summary] [Purpose] Excellent balance between air permeation resistance and flexibility, Further, the present invention provides a pneumatic tire having an air permeation preventive layer which is excellent in adhesiveness / bondability with an air permeation preventive layer and rubber and which enables weight reduction of the tire. [Constitution] (A) Air permeability coefficient is 25 × 10 -12 cc · cm / cm 2 ・ Sec ・ cmHg or less thermoplastic resin with Young's modulus over 500 MPa based on the total polymer weight of 10% by weight or more and (B) Air permeability coefficient of 25 × 10 -12 cc ・ cm / cm 2 ・ sec ・ Young's over cmHg Elastomer with a rate of 500 MPa or less is 10 Included in an amount such that the total amount of (A) and (B) is 30% by weight or more based on the total weight of the polymer, and (C) the thermoplastic resin. In (A), another thermoplastic resin whose melting point is below the vulcanization temperature is (A), Including 3 to 50% by weight based on the total weight of (B) and (C), air permeability coefficient of 25 × 10 -12 cc · cm / cm 2 · sec · cmHg or less and Young's modulus of 1 to 500 MPa Pneumatic tire with layers. |