Patent ID: 8317956
Filing Date: 2012-11-27
Classification: E01F,Y10T

Abstract:
1. A method of bonding a preformed thermoplastic road marker with top surface signage to uncured concrete exhibiting laitance comprising; a) providing a first underlying substrate consisting of uncured concrete and applying an epoxy polymer that has a viscosity in the range of 100 to 300 centipoises upon the uncured concrete such that the epoxy seeps into the uncured concrete; b) mating a preformed thermoplastic road maker with a second overlying layer with top surface signage upon said epoxy coated surface of the uncured concrete to form a laminate, wherein said epoxy polymer is a mixture consisting of an isocyanate-functional prepolymer, a silane and an amount of terpene-phenolic resin effective to provide curing; c) heating said laminate in the presence of moisture to form a concrete bonded preformed thermoplastic road marker with top surface signage whereby the final bond strength exceeds 180 psi between all layers.