Resorsabond 4552 Georgia-Pacific Chemical Crosslinking / Coupling / Curing Agents Aminoplaste & Phenoplastes (UF, MUF...) ADHESIVE Hardener. Used in adhesives. These slurry adhesives are suited for gluing irregular mating wood surfaces. Contains paraformaldehyde which is irritating to mucous membranes and may cause dermatitis. The dust is potentially explosive if dispersed in air and exposed to flame, sparks, or static electricity. Hardener for phenol-resorcinol-formaldehyde resins. Used in adhesives for gluing irregular mating wood surfaces. Contains paraformaldehyde.