Patent ID: 6186202
Filing Date: 2001-02-13
Classification: B60C,C08K,C09J

Abstract:
A retreaded tire assembly, comprising: a circular laminate including a cured casing having an outer peripheral surface;a circular, uncured, solvent free adhesive cushion layer having an inner and outer peripheral surface, said inner peripheral surface of said cushion layer being directly adhered to said outer peripheral surface of said cured casing without intervening layers of cement or adhesives, said adhesive cushion layer consisting essentially of a blend of at least one rubber, sulfur, a tackifying agent, from about 40 to about 60 phr of silica, less than 20 phr by weight of carbon black, and a silica coupling agent, said adhesive cushion layer rubber being natural rubber, a polymer or copolymer derived from at least one conjugated diene having from 4 to about 7 carbon atoms, a copolymer made from a conjugated diene having from 4 to about 7 carbon atoms and a vinyl substituted aromatic having from 8 to 12 carbon atoms, or blends thereof, said silica coupling agent having the formula ##STR2##wherein n is from 2 to 6, wherein x and y independently is from 1 to 4, and R.sup.1 through R.sup.6 independently is an alkyl having from 1 to 4 carbon atoms, anda retread layer having an inner surface adhered to said outer peripheral surface of said cushion layer, the rubber component of said retread layer consisting of natural rubber, a rubber derived from a conjugated diene having from 4 to 10 carbon atoms, or a rubber derived from a conjugated diene having from 4 to 10 carbon atoms and a vinyl substituted aromatic monomer having from 8 to 12 carbon atoms, or blends thereof.