An adhesive system for bonding uncured rubber to cured polyurethane.

摘要

An adhesive system for bonding an uncured rubber to a cured polyurethane comprises a nitroso type crosslinking agent, a polyisocyanate crosslinking agent, a wetting agent such as an epoxy resin which is capable of wetting the polyurethane, and optionally a solvent. A tackifier can optionally be contained in the above adhesive system to improve tack in situations where such is desired. The adhesive system can be utilized in specific situations such as to adhere a steel bead, as in a tire, which is encapsulated in polyurethane, with a tire sidewall, to adhere an uncured rubber tread to a urethane tire, to adhere a tread or repair patch over sections of a cured polyurethane, and the like.