Solvent-free polyurethane adhesives
Chemique Adhesives Inc. (Atlanta, Ga.) has introduced to the U.S. market a line of solvent-free polyurethane adhesives. Solfre2 is a two-component polyurethane formulation that the company says is completely free of volatile organic com-pounds (VOCs) and satisifies all the current environmental regulations. The two components come in equal amounts and are stored separately until application. When the two parts are combined, a chemical reaction starts the cure process and reportedly leaves no harmful free isocyanate in the atmosphere. There are three key types of adhesives: Solfre2 GP is the general-purpose formulation, which can be applied using either spray or bead. Solfre2 HC is formulated for honeycomb paneling; Solfre2 HCR is a rollable version of Solfre2 HC.