Abstract: A moisture-curing hot-melt-adhesive composition in granulate, tablet or powder form can be produced by a.) fusing the reactive hot-melt-adhesive composition and heating the melt, subject to exclusion of moisture, b.) extruding this melt through one or more dies onto a cooled surface, subject to exclusion of moisture, c.) cooling the granulate, subject to exclusion of moisture, whereby the composition solidifies, d.) removing the cooled hot-melt-adhesive granulate, e.) filling the granulate into moisture-tight packages, subject to exclusion of moisture. These reactive hot-melt adhesives are pourable and free-flowing and therefore can be used with all conventional application machines for hot-melt adhesives.

Abstract: A process for the production of a polyurethane hot-melt adhesive based on grafted polyester-polyether block copolymers with grafted-on hydroxyl groups and the reaction thereof with a stoichiometric excess of a polyisocyanate and the optional mixing thereof with further pre-polymers based on polyether polyols and polyester polyols is disclosed. By this process, the polyester-polyether block copolymers are firmly incorporated into the polyurethane matrix on curing, so that they are migration-proof. Highly-elastic hot-melt adhesives result, which, with optional foaming, are also suitable for the production of elastic seals.

Abstract: A process for the production of a polyurethane hot-melt adhesive based on grafted polyester-polyether block copolymers with grafted-on hydroxyl groups and the reaction thereof with a stoichiometric excess of a polyisocyanate and the optional mixing thereof with further pre-polymers based on polyether polyols and polyester polyols is disclosed. By this process, the polyester-polyether block copolymers are firmly incorporated into the polyurethane matrix on curing, so that they are migration-proof. Highly-elastic hot-melt adhesives result, which, with optional foaming, are also suitable for the production of elastic seals.

Abstract: A moisture-curing hot-melt-adhesive composition in granulate, tablet or powder form can be produced by

Abstract: Reactive hot-melt adhesive with a softening-point between 90° C. and 160° C.—in particular reactive polyurethane hot-melt adhesives—are suitable for the adhesion bonding of mouldings made of agglomerated cork to discs made of natural cork. In this way it is possible for high-quality cork-stopper composites for the sealing of beverage bottles to be produced in very efficient and cost-effective manner.