Patent ID: 7240708
Filing Date: 2007-07-10
Classification: B60C,C08G,C09D,Y10S,Y10T

Abstract:
1. A pneumatic tire comprising a skin layer which is formed by curing a polyurethane resin composition comprising a compound having active hydrogen atoms and an organic polyisocyanate compound, has an oxygen permeation coefficient at 23° C. under a relative humidity of 60% of 2.0 ml·mm/m 2 ·day·MPa or smaller and comprises 20% by weight or more of a skeleton structure represented by formula (1): wherein the compound having active hydrogen atoms is at least one compound selected from addition products of alkylene oxides to aromatic-aliphatic polyamines, addition products of polyols to aromatic-aliphatic polyisocyanate compounds and aromatic-aliphatic polyols, and wherein said pneumatic tire further comprises an auxiliary layer, having a thickness in a range of 50 to 500 μm, which is disposed adjacent to the skin layer and comprises an elastomer having an oxygen permeation coefficient at 23° C. under a relative humidity of 60% of 5,000 ml·mm/m