POLYURETHANE BONDED TO CURED RUBBER

摘要

POLYURETHANE BONDED TO CURED RUBBER A method of preparing a composite of polyurethane bonded to the surface of a cured rubber substrate and the resulting composite. The method is comprised of first applying to a cleaned, cured rubber surface a coating of methylmethacrylate-natural rubber graft polymer and then applying a liquid polyurethane reaction mixture which is cured to form the resultant composite. The invention is particularly directed to the preparation of a tire comprised of a polyurethane carcass applied to a cured rubber tread and to a tire comprised of a polyurethane tread applied to a cured rubber carcass.