ADHESIVES CONTAINING EXOTHERMIC CROSSLINKER AND ALUMINA

摘要

Resole resins having a formaldehyde to phenol mole ratio within the range from about 2 to about 2.5 are used in an adhesive formulation having a crosslinking agent and finely divided aluminum oxide. The crosslinking agent provides in-situ reaction heat to enhance the curing rate of the resin. The aluminum oxide appears to serve both as a catalyst for the crosslinking reactions of the crosslinking agent and as a heat transfer facilitator for distributing the exothermic heat as well as the applied heat during the hot press step.