Process for making rigid polyurethane foams having high adhesion

摘要

Use, in a water-blown rigid polyurethane or urethane-modified polyisocyanurate foam, of a polyalkyleneoxydiol having an OH value of 100 to 600 mg KOH/g, where the diol represents from 0.1 to 20% by weight of the foam weight, for improving the adhesion.