LOCTITE UR 7221 is a solvent-free, moisture curing one component adhesive based on polyurethane. At room temperature and the required humidity in the joint sufficent strength will be obtained after approximately 2 to 4 hours. For faster curing LOCTITE UR 7221 can be cured in a heated press. Maximum temperature must not exceed 70°C.
LOCTITE UR 7221 is used for the manufacture of sandwich elements with porous substrates (e.g. wood) which contain humidity. The substrates can be bonded to one another or to metals, laminated panels, various plastics, rigid foams made of polystyrene, polyurethane and others.