PNEUMATIC TIRE WITH POST CURE SEALANT LAYER

A pneumatic tire is disclosed comprising a radially outer circumferential rubber tread (14) disposed on a supporting carcass, an inner liner rubber layer (22) radially inwardly disposed on the supporting carcass, and a sealant layer (20) adhered to and disposed inwardly of the rubber inner liner layer (22) as a radially inner surface of the tire (10, 10a). The sealant layer (22) comprises 100 parts by weight of elastomer comprising 5 to 10 parts by weight, per 100 parts by weight of elastomer (phr) of butyl rubber, 10 to 25 phr of bromobutyl rubber, and 65 to 90 phr of polybutene; and from 0.05 to 2 phr of a polymeric amine.