Patent ID: 7067189

Claim:
A rubber containing product comprising: a polymeric fiber coated with a compound having a plurality of epoxy groups, wherein the polymeric fiber is coupled to a rubber via an adhesion promoter; wherein the adhesion promoter comprises a polymeric strand with an epoxy-reactive group other than a phenolic hydroxyl group, and further comprises a crosslinking group that has crosslinked the polymeric strand with the rubber; wherein the polymeric strand comprises a polybutadiene which is grafted with a maleic anhydride and wherein the maleic anhydride is reacted with a compound selected from the group consisting of a methoxy polyethylene glycol, a monoamine terminated polyoxyalkylene, and a monoalcohol terminated polyoxyalkylene; and wherein the adhesion promoter is water soluble in an amount of at least 10 g/l.