Patent ID: 8246777

Claim:
A process of manufacturing a honeycomb sandwich panel comprising: mixing a component C 1 and a component C 2 of a two component polyurethane adhesive composition to obtain a mixed two component polyurethane adhesive; joining a panel substrate S 1 to a honeycomb core with the mixed two component polyurethane adhesive; joining a panel substrate S 2 to the honeycomb core with the mixed two component polyurethane adhesive; and pressing and heating, at a temperature of 50 to 100° C., a joint of the honeycomb sandwich panel by means of a heated press, wherein: the component C 1 comprises at least one polyol P 1 having a bisphenol-A or bisphenol-F moiety, at least one polyester polyol or polyether polyol P 2 , and at least one heat-activated polyurethane catalyst CA; and the component C 2 comprises at least one polyisocyanate PI.