Two-part polyurethane adhesive
Patent No. U.S. 7,205,374 B2
BFS Diversified Products has obtained a patent for a method for preparing two-part polyurethane adhesives for bonding insulation boards to a roof deck. The method is comprised of combining an isocyanate prepolymer with at least one trimerization catalyst including a potassium, sodium, or lithium p-nonylphenoxide, where the step of combining takes place at a temperature of from approximately 40-100° F.