Abstract: Discussed are hot-melt adhesives that can be cross-linked by radiation. The adhesives comprise more than 30%, relative to the hot-melt adhesive, of at least one polyurethane polymer which contains at least one reactive group that can be polymerized by radiation.

Abstract: A crosslinkable binder consisting of a base polymer selected from poly(meth)acrylates, polyesters, polyurethanes, polyamides, polyolefins, polyethers, copolymers of vinyl esters, silicones, wherin the binder has number-average molecular weight (MN) between 500 g/mol and 1 000 000 g/mol and contains at least one crosslinkable thiophene or pyrrole group in covalently bonded form.

Abstract: A radiation curable hot-melt adhesive is provided which contains a polyurethane polymer. This polyurethane polymer is prepared from A) a reactive polyurethane prepolymer which contains at least two NCO groups, B) a low molecular weight compound which comprises a free-radically polymerizable double bond and a functional group which reacts with a NCO group; C) a compound which comprises a functional group which reacts with a NCO group, but does not comprise a functional group polymerizable under free-radical condition; and D) a free-radical photoinitiator which contains a primary or secondary alcohol functional group. The radiation curable hot-melt adhesive is suitable as tapes, films, labels or articles for medical use with pressure-sensitively adhesive layers, in particular, for adhesively bonding shrinkable labels on rotationally symmetrical containers.